Diamond Certified Company Spotlight Series: Alameda County (Part 2)

We’ve all felt the joy of choosing a good company in Alameda County and, unfortunately, the pain when we mistakenly choose a bad one. The problem is, every company claims to be good, yet despite these glowing claims some provide inconsistent quality while others are downright dishonest. We’ve solved this problem for you with Diamond Certified Resource. Only local companies independently rated Highest in Quality and Helpful Expertise earn Diamond Certified. Our rigorous <a href=http://www.diamondcertified.org/the-certification target=_self>rating and certification process</a> starts with the in-depth pass/fail rating of each company’s customer satisfaction, license and insurances. Most companies can’t pass our rating and earn Diamond Certified, and every Diamond Certified company must continue to deliver on its promises to you, the consumer. That’s why we conduct ongoing customer satisfaction research and credential-based ratings and monitor each company’s performance. Here’s the second part of our list featuring all the Diamond Certified companies that serve Alameda County. <a href=https://www.diamondcertified.org/report/kodiak-construction/ target=_self>Kodiak Construction</a> Kodiak Construction provides concrete installation and repair services throughout the Bay Area, handling patios, walkways and driveways along with retaining walls, foundation work and related site needs. The family-owned company has served the East Bay, Napa County and Marin County since 1995, and it pairs decades of hands-on experience with a commitment to staying present on the job until completion. Decorative concrete options add another layer of customization, with a wide range of colors and patterns that can turn a basic hardscape into a finished outdoor feature. <a href=https://www.diamondcertified.org/report/maintenance-agents/ target=_self>Maintenance Agents</a> Maintenance Agents provides window cleaning, pressure washing, and gutter cleaning services for residential and commercial properties in the Bay Area. Owner Jose Barajas works as an owner-operator, so clients get direct communication, real-time decisions, and a steady focus on safety and professionalism. He flags access limits or safety concerns upfront and collaborates with property owners on the best plan, which helps avoid surprises. <a href=https://www.diamondcertified.org/report/marc-guay-team/ target=_self>Marc Guay Team</a> Marc Guay Team, in partnership with Coldwell Banker Realty, helps buyers and sellers navigate residential real estate in Berkeley and the surrounding communities. Marc Guay brings decades of local experience and pairs it with the tools and marketing reach of a major brokerage, which helps clients price, position and protect their interests in changing market conditions. He communicates clearly, stays transparent about timelines and remains consistently available, even when nothing major changes week to week. Because he builds his business through referrals, he focuses on detail-oriented guidance and steady follow-through that keeps clients informed and confident. <a href=https://www.diamondcertified.org/report/martinez-stair-company-inc/ target=_self>Martinez Stair Company Inc.</a> Martinez Stair Company Inc. designs and installs custom wood stairs, staircases, railings, and stair components for residential and commercial clients in Alameda and Contra Costa Counties. President Taro Martinez runs a cleanliness-first, respect-the-home operation, and his crews work in careful sections to keep jobsites safer and less disruptive. The company stays on the job until completion rather than bouncing between projects, which helps quality stay consistent from rough build through finish details. <a href=https://www.diamondcertified.org/report/metropolitan-van-storage-inc/ target=_self>Metropolitan Van & Storage, Inc.</a> Metropolitan Van & Storage, Inc. has been providing local, national, and international moving services throughout Northern California since the 1940s. The company offers full-service relocation, including packing, crating and modular furniture installations. It also provides long-term and in-transit storage at locations in Benicia, West Sacramento, and Mountain View. Beyond moving and storage, Metropolitan Van & Storage offers secure record storage services, including document retrieval, certified destruction and medical record purging. The company’s facilities feature state-of-the-art Early Suppression Fast Response (ESFR) systems and 24/7 monitoring by Bay Alarm to protect clients’ belongings. <a href=https://www.diamondcertified.org/report/mighty-men-services-llc/ target=_self>Mighty Men Services, LLC</a> Mighty Men Services, LLC cleans attics and crawl spaces, removes insulation, and provides pest and rodent control services in Alameda, San Francisco, Contra Costa, Solano, and Napa Counties. The family-run company customizes treatment plans to each property and follows up to confirm the issue is truly resolved. Owner Maria Talacona brings a humane mindset through the Good Mother Program, which removes animals and their young without separating them. Because the company educates homeowners on warning signs and prevention steps, clients get more than a one-time fix. <a href=https://www.diamondcertified.org/report/moore-mechanical-heating-air-conditioning/ target=_self>Moore Mechanical Heating & Air Conditioning</a> Moore Mechanical Heating & Air Conditioning has served Alameda and Contra Costa Counties since 1985, providing HVAC repair, replacement, and maintenance services for residential and commercial clients. General Manager Josh Henrich continues the company’s reputation for personal service—customers talk to real people, get fast appointments and receive options that fit their homes instead of generic recommendations. The team takes a whole-home approach that includes in-depth diagnostics, ductwork evaluations and air quality reviews, which helps make quotes more accurate. <a href=https://www.diamondcertified.org/report/mr-pavers-contractor-services-inc/ target=_self>Mr. Pavers Contractor Services, Inc.</a> Mr. Pavers Contractor Services, Inc. installs paving stones for driveways, walkways, patios and pool areas in seven Bay Area counties. Owner Glayston Soares says the company’s priority is making customers happy, so the team always takes time to ensure everything is going smoothly. Mr. Pavers Contractor Services emphasizes communication during each phase of the paving stone process, which Mr. Soares says is imperative for achieving positive results. The company deals directly with customers and stays in constant contact with them to avoid middleman miscommunication. <a href=https://www.diamondcertified.org/report/natural-landscaping-contractors/ target=_self>Natural Landscaping Contractors</a> Natural Landscaping Contractors creates complete outdoor environments for homeowners in Contra Costa County and parts of Alameda County, handling everything from paving, retaining walls, decks and grading to drainage, planting, lawns, lighting and mulch. The company’s collaborative process starts with a goal-focused consultation and a preliminary design, so clients see approximate costs early. Owner Paul Singh takes projects one at a time to stay focused, which helps avoid delays and keeps decision-making clearer. Because he pairs design creativity with horticultural knowledge, homeowners end up with landscapes that look great now and hold up as plants mature. <a href=https://www.diamondcertified.org/report/pacific-coast-termite/ target=_self>Pacific Coast Termite</a> Pacific Coast Termite uses orange oil to rid Bay Area homes of destructive, unwanted pests. The family-owned company specializes in XT-2000 Orange Oil, which eradicates termites and their eggs on contact when injected directly into infested areas. Pacific Coast Termite also offers alternative pest control products and handles infestation removal, along with preventive pest control treatments to help defend against future invasions. The company’s inspectors provide thorough inspections of buildings and homes, detailed reports of their findings, and recommendations for treatment and pricing. <a href=https://www.diamondcertified.org/report/pacific-plumbing-systems/ target=_self>Pacific Plumbing Systems</a> Pacific Plumbing Systems provides trusted plumbing services for homes and businesses in the Bay Area. Led by Ron Beesley, the family-owned company specializes in repairs, fixture replacements, new installations, water heaters (including energy-efficient models) and safety solutions such as earthquake shut-off valves. Pacific Plumbing Systems blends traditional values with modern expertise to ensure reliable service and peace of mind. Every project is backed by a one-year warranty on labor, with additional warranties on fixtures. <a href=https://www.diamondcertified.org/report/paradigm-concrete-construction-inc/ target=_self>Paradigm Concrete & Construction, Inc.</a> Paradigm Concrete & Construction, Inc. has served Alameda and Contra Costa Counties since 1995, installing and replacing concrete and masonry features like sidewalks, patios, driveways, and pool decks. Because the company holds a C-8 specialty license, it can deliver higher-end looks with exposed aggregate, slate, tile and brick, plus finishes like broom, stamp, overlay and custom color work. Owner Salvador Arteaga and his team also spot site issues early, so they can flag drainage or structural concerns before they turn into expensive surprises. <a href=https://www.diamondcertified.org/report/peninsula-design-and-construction/ target=_self>Peninsula Design and Construction</a> Peninsula Design and Construction provides remodeling and construction services for residential and commercial clients throughout the Bay Area. Projects range from minor repairs and carpentry to complete ground-up construction, with project management offered at every stage. Owner Michael Abrishamcar emphasizes transparency and communication, providing open-book estimates to help clients adjust costs and scope as needed. Peninsula Design and Construction focuses on delivering high-quality workmanship while fostering long-term client relationships through efficient project oversight. <a href=https://www.diamondcertified.org/report/perfect-star-heating-cooling-electrical/ target=_self>Perfect Star Heating, Cooling, & Electrical</a> Perfect Star Heating, Cooling, & Electrical serves Alameda and Contra Costa Counties with heating and AC repairs, replacements, ductless mini-splits, ductwork, indoor air quality upgrades, electrical work, and even solar. Because Perfect Star tackles complex projects that other contractors avoid, it pairs thorough sizing and code-ready installation practices with the kind of detail-oriented work that protects long-term performance. With tools like real-time updates, technician reminders and a maintenance program, the process feels clearer and less stressful from the first call to the final walkthrough. <a href=https://www.diamondcertified.org/report/pipe-spy-inc/ target=_self>Pipe Spy Inc.</a> Pipe Spy Inc. provides trenchless sewer replacement, camera inspections, and sewer diagnostics for residential and commercial clients in Alameda and Contra Costa Counties. The company also helps property owners navigate sewer compliance and boundary issues with neighbors and city agencies. Owner Heiko Dzierzon uses advanced trenchless methods (including pipe bursting) to reduce the cost and disruption of traditional sewer replacement. Pipe Spy Inc. emphasizes clear communication at every stage, ensuring clients understand the process and receive effective, long-term solutions. <a href=https://www.diamondcertified.org/report/precision-cleaning-services/ target=_self>Precision Cleaning Services</a> Precision Cleaning Services provides carpet, rug, upholstery, stone, tile, and grout cleaning services for residential and commercial clients. Owner Curt Holman has served the Bay Area since 1994, and he stays on every jobsite so clients get direct accountability and consistent quality. He relies on truck-mounted steam cleaning for deep results and better dry times, and he also uses turbo fans and smart commercial practices like double cleaning to reduce residue. <a href=https://www.diamondcertified.org/report/premiergarage/ target=_self>PremierGarage</a> PremierGarage transforms garages with floor coatings, custom modular cabinets, organizers and storage solutions. The company’s process starts with a free in-home consultation and continues with careful planning, so homeowners can build anything from a parking space to a workshop or hobby zone without guessing through the details. With high-quality materials, disciplined installation methods and a “Premier Difference” mindset that prioritizes the experience, PremierGarage makes garage upgrades feel well-managed. <a href=https://www.diamondcertified.org/report/quality-first-home-improvement-inc/ target=_self>Quality First Home Improvement, Inc.</a> Quality First Home Improvement, Inc. sells and installs home improvement products for residential clients throughout Northern California and Northern Nevada. The company has been in business since 2005 and has served over 46,000 customers, building a proven track record of customer satisfaction. CEO/President Scott Gabaree leads a team of factory-trained installers who use high-quality materials, and the company’s solar division is dedicated to providing Energy Star and environmentally-friendly products. Quality First is a GAF Master Elite roofing contractor, and the company offers financing to make projects more accessible. <a href=https://www.diamondcertified.org/report/quality-windows-doors-inc/ target=_self>Quality Windows & Doors, Inc.</a> Quality Windows & Doors, Inc. offers premium window and door solutions to residential and commercial clients in Alameda and Contra Costa Counties. The company’s Pleasanton showroom features products from Andersen, Marvin, Milgard, ProVia and Masonite. Founded in 1989, the company has over 40 years of experience in the window and door replacement industry. Leadership transitioned to Billy Warm in 2025, with founder Eric Warm remaining actively involved. Quality Windows & Doors focuses on professionalism, high-quality installation and exceptional customer service. <a href=https://www.diamondcertified.org/report/reactic-restoration/ target=_self>Reactic Restoration</a> Reactic Restoration provides comprehensive water and fire damage remediation services for residential and commercial properties throughout the Greater Bay Area and Sacramento. With trained technicians and dedicated project oversight, the company manages everything from the initial inspection through the finishing touches, including mold remediation and crawl space services when needed. Business Operations Manager Atar Barkai notes that clear communication and steady guidance help reduce stress during difficult situations. By combining technical expertise with consistent follow-through, Reactic delivers organized, professional restoration services. <a href=https://www.diamondcertified.org/report/roberts-electric-company-inc/ target=_self>Roberts Electric Company, Inc.</a> Roberts Electric Company, Inc. (RECO) is a full-service electrical contractor serving residential, commercial, and industrial clients in Alameda and Contra Costa Counties since 1932. Services include lighting, circuit upgrades, new installations, remodels, additions, and energy management systems for homes and businesses. RECO partners with Lutron HomeWorks, RadioRA and commercial energy management systems to stay current on rapidly changing LED lighting technologies. Recognized for excellence, RECO has been named one of the San Francisco Business Times’ “Top 20 Largest Electrical Contractors in the Bay Area” 14 times in 17 years and earned the East Bay Times’ “Best Electrician” award in 2024 and 2025. <a href=https://www.diamondcertified.org/report/rockridge-builders/ target=_self>Rockridge Builders</a> Rockridge Builders provides design/build construction services for residential and commercial clients throughout the East Bay, ranging from kitchen and bathroom remodels to custom homes and complex structural projects. Owner Bill Hinkamp, a UC Berkeley College of Environmental Design graduate, brings decades of experience solving challenging design and construction issues. The company approaches each project with careful planning, transparent communication and attention to structural integrity. With more than 1,000 completed projects, Rockridge Builders offers experienced leadership and thoughtful execution from concept to completion. <a href=https://www.diamondcertified.org/report/roof-life-construction/ target=_self>Roof-Life Construction</a> Roof-Life Construction installs and maintains composition shingle, tile, slate, and TPO roofing systems for residential and commercial clients in Alameda and Contra Costa Counties. In addition to roofing, the company provides gutter installation, sheet metal work, skylights, attic insulation and solar integration. President Tom Rhoads emphasizes honest communication and manufacturer-certified installation practices to ensure each roof meets strict performance standards. With a 10-year workmanship warranty and a proactive maintenance program, Roof-Life delivers durable roofing systems backed by experienced professionals. <a href=https://www.diamondcertified.org/report/s-s-painting-coatings-inc/ target=_self>S & S Painting and Coatings, Inc.</a> S & S Painting and Coatings, Inc. offers interior and exterior painting services to residential, commercial, and industrial clients in Alameda and Contra Costa Counties. The company handles every step of the painting process, from color consultation to surface preparation, pressure washing, waterproofing, dry rot repair and epoxy work. President Greg Severs highlights the personal attention the team gives each project, including challenging high-rise and specialty assignments. With specialized equipment and expertise in high-rise work, S & S Painting and Coatings ensures every job is completed efficiently and safely. <a href=https://www.diamondcertified.org/report/savior-plumbing-inc/ target=_self>Savior Plumbing, Inc.</a> Savior Plumbing, Inc. provides a full range of plumbing services for residential and commercial clients, including faucet and toilet repairs, drain clearing, sewer replacement, water heater installation and repair, slab leak detection, copper repiping, gas line work, and video sewer inspections. President Tammy Cortez emphasizes the company’s personalized approach, which includes listening closely to customers and providing guidance that offers peace of mind during stressful situations. Savior Plumbing relies on a skilled team of experienced journeymen, ensuring every repair and installation is completed efficiently and honestly. <a href=https://www.diamondcertified.org/report/schicker-luxury-shower-doors-inc/ target=_self>Schicker Luxury Shower Doors, Inc.</a> Schicker Luxury Shower Doors, Inc. designs, manufactures, and installs custom shower enclosures for residential and commercial clients throughout the Bay Area and Sacramento. Since 1980, the company has focused exclusively on shower doors, offering a wide variety of glass patterns, metal finishes and hardware options while creating fully custom enclosures built to precise client specifications. President Peter Schicker and General Manager Joe Matthews emphasize quality and consistency, handling every aspect of each project in-house with experienced technicians and a fleet of fully stocked installation vans. <a href=https://www.diamondcertified.org/report/service-champions/ target=_self>Service Champions</a> Service Champions provides heating, cooling, plumbing, electrical, ductwork and insulation services for homeowners throughout Northern California. The company invests heavily in technician training through its in-house Champions University and ensures every team member meets strict hiring and certification standards. Beyond technical skill, Service Champions emphasizes punctuality, professionalism and clear pricing so clients know exactly what to expect. Backed by multiple service guarantees and a long-standing family presence in the industry, the company focuses on creating positive home service experiences. <a href=https://www.diamondcertified.org/report/sierra-roofing-solar/ target=_self>Sierra Roofing & Solar</a> Sierra Roofing & Solar has served the Bay Area since 1976, specializing in roof replacements and solar installations for residential and commercial clients. With over 10,000 projects completed, the company is known for its extensive manufacturer-backed warranties and workmanship guarantees. President Jeff Basch stresses the importance of customer education and satisfaction, guiding clients through every option while ensuring projects are completed on time and on budget. <a href=https://www.diamondcertified.org/report/site-for-sore-eyes-fremont/ target=_self>Site for Sore Eyes - Fremont</a> Site for Sore Eyes - Fremont provides comprehensive vision care, offering eyeglasses, sunglasses, safety and sports goggles, and contact lenses to suit every taste and budget. It has an onsite lab to provide same-day service and repairs when possible, along with a 30-day exchange policy and acceptance of all major vision insurance plans. The company emphasizes customer service, the latest lens technology and a curated selection of brands. <a href=https://www.diamondcertified.org/report/smith-son-construction/ target=_self>Smith & Son Construction</a> Smith & Son Construction provides remodeling and construction services for residential and commercial clients in Alameda, Contra Costa, and Solano Counties, handling everything from kitchens and bathrooms to room additions, tenant improvements and full home remodels. Vice President Kierra Smith emphasizes transparency and creative problem-solving, guiding clients through each project with in-house teams that manage every phase of construction. This approach allows the company to coordinate with architects and engineers seamlessly, ensuring a smooth experience that saves clients time and money while producing high-quality results. <a href=https://www.diamondcertified.org/report/springs-construction/ target=_self>Springs Construction</a> Springs Construction provides residential remodeling and new home construction services throughout the Bay Area. The company manages projects from pre-construction planning through turnkey completion, supported by in-house designers and experienced project managers who coordinate every detail. Decades of experience allow the team to anticipate challenges, maintain realistic timelines and guide homeowners confidently through complex renovations. With a structured process and consistent oversight, Springs Construction delivers thoughtfully built homes designed for lasting quality. <a href=https://www.diamondcertified.org/report/springtown-wellness-center-jag-dhesi-d-c/ target=_self>Springtown Wellness Center - Jag Dhesi, D.C.</a> Springtown Wellness Center offers chiropractic care and wellness services at its Livermore and San Ramon locations, helping patients address pain, mobility issues and overall health concerns. Dr. Jag Dhesi and his team develop customized treatment plans that may include chiropractic adjustments, corrective exercises, nutritional guidance, and lifestyle support. Because the practice avoids one-size-fits-all care, patients receive solutions tailored to their specific conditions and goals. With a holistic approach and clear communication, Springtown Wellness Center focuses on restoring function and supporting long-term wellness. <a href=https://www.diamondcertified.org/report/star-rooter-and-plumbing-inc/ target=_self>Star Rooter and Plumbing, Inc.</a> Star Rooter and Plumbing, Inc. provides residential and commercial plumbing services throughout the Bay Area, including drain/sewer cleaning and trenchless sewer repiping. Owner Fred Ramos has grown the company from a two-person operation into a full-service firm with 15 employees and 10 trucks. He personally inspects each job, ensuring cleanliness, quality workmanship and top-notch customer service. <a href=https://www.diamondcertified.org/report/sulvaran-drywall/ target=_self>Sulvaran Drywall</a> Sulvaran Drywall installs, repairs, patches, and textures drywall for homeowners in Alameda and Contra Costa Counties. The company also addresses water-damaged drywall, removes popcorn ceilings and provides soundproofing solutions. Owner Tomas Sulvaran stays closely involved from the estimate through the final walkthrough, ensuring clear communication and consistent workmanship. With careful dust control and thorough cleanup practices, the team protects homes while delivering smooth, high-quality finishes. <a href=https://www.diamondcertified.org/report/sunbusters-patio-cover-company-inc/ target=_self>Sunbusters Patio Cover Company, Inc.</a> Sunbusters Patio Cover Company, Inc. designs and installs patio covers, lattices, louvers, and custom outdoor structures for residential and commercial clients throughout Northern California. The veteran-owned company works with leading manufacturers while also creating fully customized designs tailored to each property. By conducting ongoing quality checks during installation and maintaining open communication, the team ensures projects stay on track and meet expectations. <a href=https://www.diamondcertified.org/report/symons-landscaping/ target=_self>Symons Landscaping</a> Symons Landscaping provides landscaping services for residential clients in the East Bay, including garden design, lighting installation, decks, fences, retaining walls and water features. Owner Ryan Symons highlights the company’s focus on communication, keeping clients informed and confident throughout the process. By managing all work in-house and limiting subcontractors, Symons Landscaping maintains high quality and consistency, delivering durable results while treating each project with the care and attention it deserves. <a href=https://www.diamondcertified.org/report/td-west-electric-inc/ target=_self>TD West Electric, Inc.</a> TD West Electric, Inc. provides electrical repair, installation, and maintenance services for residential and commercial clients in Alameda, Contra Costa, Santa Clara, and San Mateo Counties. The company handles projects ranging from panel upgrades and whole-house rewiring to electric vehicle charging systems. Owner Dinh Nguyen credits the company’s success to its troubleshooting expertise and focusing on permanent fixes rather than temporary patches. TD West Electric emphasizes clear communication with clients, educating them throughout each project and following up after completion. <a href=https://www.diamondcertified.org/report/the-floor-store/ target=_self>The Floor Store</a> The Floor Store is a full-service Bay Area flooring retailer with 10 locations offering carpet, hardwood, laminate, luxury vinyl, tile, natural stone and more. Founded in 1986, the company combines broad access to major manufacturers with direct importing of select materials that can be difficult to find through typical channels. Customers receive guidance from design and color specialists who help build cohesive interior selections rather than just choosing a single product. With large-format displays in select showrooms and a service approach that prioritizes personalized support, The Floor Store makes big flooring decisions feel easier and more confident. <a href=https://www.diamondcertified.org/report/the-pool-doctor/ target=_self>The Pool Doctor</a> The Pool Doctor services and repairs Bay Area pools and spas, providing maintenance, cleaning, consultations and chemical treatments on schedules tailored to each client. The company’s experienced staff supports the Heath family’s long-standing focus on reliability and customer satisfaction through ongoing training and best-practice updates. In addition to routine service, The Pool Doctor specializes in automation and energy-efficient upgrades that can significantly reduce pool operating costs. <a href=https://www.diamondcertified.org/report/todays-kitchen-bath/ target=_self>Today’s Kitchen & Bath</a> Today’s Kitchen & Bath remodels kitchens, bathrooms, living spaces, garages, home additions, and ADUs for residential clients in Alameda and Contra Costa Counties. The company also offers a broad selection of cabinets, countertops and flooring at its Livermore showroom, along with 3D design services to help clients visualize their final spaces. Co-owner Eddie Juarez emphasizes a customer-focused approach, guiding them through every decision and treating each home as if it were his own. By combining hands-on design support with high-quality installation, Today’s Kitchen & Bath delivers personalized remodeling solutions that ensure client satisfaction at every stage of the project. <a href=https://www.diamondcertified.org/report/westshore-roofing-inc/ target=_self>Westshore Roofing, Inc.</a> Westshore Roofing, Inc. provides comprehensive residential and commercial roofing services in the Bay Area, handling roof installations, repairs, inspections and gutter work. The company offers a wide variety of roofing products, including Timberline Solar shingles, asphalt composition, stone-coated metal, standing seam panels, fire-retardant cedar shakes, silicone roof coatings and PVC single-ply systems, all backed by warranties and expert installation. President Paul Fowler ensures clients understand their options and receive a service plan customized to their needs. <a href=https://www.diamondcertified.org/report/william-r-hummer-dds/ target=_self>William R. Hummer, DDS</a> William R. Hummer, DDS offers comprehensive dental care for patients of all ages at its San Leandro practice. The office provides preventive, restorative, cosmetic and minimally invasive dentistry, including cleanings, fillings, crowns, veneers, Invisalign®, implants, and dentures, as well as emergency care and customized mouth guards. Dr. Hummer emphasizes gentleness and patient comfort, using state-of-the-art equipment, digital x-rays and advanced sterilization techniques. Supported by a dedicated staff, the practice focuses on individualized care and long-term oral health, ensuring each patient receives modern dentistry in a caring and professional environment. <a href=https://www.diamondcertified.org/report/yorkshire-roofing-of-northern-california-inc-dba-roofmax/ target=_self>Yorkshire Roofing of Northern California Inc. DBA Roofmax</a> Yorkshire Roofing of Northern California Inc. DBA Roofmax provides residential and commercial roofing services in Alameda and Contra Costa Counties, working with materials ranging from composition shingles and metal to flat/low-slope systems. The company also supports related upgrades such as solar, insulation, gutters, skylights and ventilation to create more complete exterior solutions. Roofmax emphasizes detailed proposals, clear options and dedicated project management so homeowners have a consistent point of contact from start to finish.