Top Rated Janitorial Service Companies Serving Alameda County, CA

Name: Cappstone, Inc.
Address: US
Rating: 4.4

If you really care about choosing a quality janitorial service company, we’re here for you. Here’s your access to the best janitorial service companies serving Alameda County including 94544, 94587, 94536, 94538 and 94541. These janitors provide tile and grout cleaning and janitorial services, and they also work on high-dusting services, kitchen cleaning and carpet cleaning. For 22 years we’ve conducted the most accurate ratings and deepest research of local companies, so you’ll be confident in choosing.

Last Updated Jun 03, 2026
8,451 people sourced companies in Janitorial Services
452 Verified Janitorial Services Customers Surveyed

452

8,451

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Cappstone, Inc.

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Cappstone, Inc. provides managed facility maintenance services for all types of facilities throughout the Bay Area. As a certified Bay Area Green Busi...

Main Services

Janitorial Services

Additional Services

Facility Maintenance Services

Brands

HD Supply White Cap, Waxie

Coverage Areas

San Francisco, Marin County, Sonoma County, Napa County, Contra Costa County, Alameda County, San Mateo County, Santa Clara County

Established in 1989

Commercial Only

Free Quotes & Consultations

Free Estimates

Diamond Certified Video Profile

Janitorial Services - Cappstone, Inc. - San Francisco

Diamond Certified Company Report

Nick Mettler, Owner & Principal

Expert Contributions

313
Rating Surveys

9
Photos
& Videos

5
Researched Articles

Rated Highest in Quality and Helpful Expertise PERFORMANCE GUARANTEED

Quick Connect
(415) 650-2446

Hours CLOSED NOW

License:

JS-LR-1000681295

Diamond Certified Janitorial Service Companies In Alameda County

Diamond Certified janitorial service companies serving Alameda County are rated an average of 4.2 out of 5 stars based on 338 reviews of 9 rated janitorial service companies.
Diamond Certified janitorial service companies in Alameda County Avg. Star Rating.

We make you an expert at choosing a high-quality janitorial service company in the area.

For those who love quality local janitorial service companies.

Within our Diamond Certified Resource:

You choose from only top rated Diamond Certified janitorial service companies that serve our area.
You see each company’s deeply researched report from our research.
You get guidance throughout every phase of hiring a local janitorial service company with our Diamond Certified Resource Commercial Office Services Guide.
You get expert guidance from top rated janitorial service companies who are Expert Contributors.
You’re backed by our Performance Guarantee.

You’ll love and refer your friends and family to your new area Diamond Certified janitorial service company. They provide expert services, including day porter services, pressure washing services, special event cleaning, furniture cleaning, odor control services, and more.

To qualify for Diamond Certified, each company must score Highest in Quality and Helpful Expertise (a 90+ on a 100 scale) and pass all our credential-based ratings. Diamond Certified janitorial service companies that serve residents include Cappstone, Inc..

Every Diamond Certified janitorial service company that serves residents in 94544, 94587, 94536, 94538 and 94541 performs various specialties, including tile and grout cleaning, hard surface maintenance, high-dusting services, disinfection services, and upholstery cleaning.

How to Choose a Quality Janitorial Service Company for Your Family

Click the name of the company to get to their Diamond Certified Company Report page.
Watch their Diamond Certified Video Profile and other videos that we’ve created for you.
Read their verbatim client survey responses and our researched articles.
Get helpful janitorial tips if they are a Diamond Certified Expert Contributor.
Call or email them to schedule an appointment.

Become a Diamond Certified Preferred Member and Join Your Neighbors

If you love quality local companies, this is for you. Become a Diamond Certified Preferred Member (always free) and get a double performance guarantee, extra guides and tips, our annual Diamond Certified Directory, and more.

Your Diamond Certified Resource. We make you an expert at choosing.

We make you an expert at choosing local companies by giving you the most accurate ratings, deeply researched company reports and Diamond Certified Guide of all Resource Guides, which cover 70+ industries in the Auto, Home, Health and Personal service categories. Each guide contains 16 key articles that are separated into “Before, During and After the Job” tabs. These are written to guide you through each phase of hiring, starting, managing and ending a job in that specific type of service.

Diamond Certified Resource Compared to Crowd-Sourced Review Sites

Diamond Certified Resource’s ratings of local companies are based on surveys of only verified real customers, so they are the most accurate. This beats crowd-sourced review sites like Yelp, Angi or even Google that are plagued with fake, manipulated, cherry-picked and non-customer reviews, which produce inaccurate and often inflated rating scores.

Diamond Certified Resource’s deeply researched reports of top rated Diamond Certified companies include everything you need to see to be very confident in choosing a top rated local company. Each company report includes detailed quality ratings and scoring, verbatim customer survey responses, a profile video, a company story video, a capabilities table, a photo gallery, researched articles, unique expert contributions from the company’s owner, and more. This beats crowd-sourced review sites that solicit companies to “claim their business listing” and add any type of info to their profiles. This sounds good, but it has led to company profiles that are littered with false claims and incomplete info.

Alameda County was founded in 1853, and today, your 1,589,955 neighbors use janitorial service companies for furniture cleaning, trash removal, carpet cleaning, post-construction cleaning, special event cleaning, and more.

Frequently Asked Questions for Janitorial Services in Alameda, CA

Q: What are clients of Diamond Certified janitorial service companies saying about companies in Alameda County, CA?

A: Verified Cappstone, Inc. Customer, 1 of 313
"I would recommend them. I'm very satisfied with the work they have done. As far as I'm concerned, they're an eleven out of ten. The quality of their work and their excellent customer service go hand in hand. They're helpful and always answer my questions. " - C. P. S. F.
All Survey Responses for Cappstone, Inc.

Q: What are some of the most popular brands that Diamond Certified janitorial service companies use when working with Alameda County residents?

A: Diamond Certified janitorial service companies use top-quality brands like Jan-Pro, OpenWorks, ABM Industries, Sodexo and Coverall.

Q: What types of kitchen cleaning do janitorial service companies offer?

A: Janitorial service companies offer a wide range of kitchen cleaning services, including deep cleaning of appliances such as stoves, refrigerators, and ovens, scrubbing and sanitizing sinks, countertops, and backsplashes, mopping floors, cleaning kitchen hoods and exhaust fans, emptying trash bins, and washing walls and ceilings. They also handle cleaning tasks for commercial kitchens, such as grease trap cleaning, grout and tile cleaning, and regularly scheduled maintenance cleaning. This ensures the kitchen area is hygienic, safe, and presentable, whether in a home, restaurant, or office setting.

Q: Can Diamond Certified janitorial service companies work with ABM Industries products and similar items so I can get tile and grout cleaning in Alameda County?

A: Yes, Diamond Certified janitorial service companies can work with ABM Industries products for tile and grout cleaning in Alameda County.

Q: What did people search for when they wanted to find the best quality janitorial service companies in Alameda County?

A: Vacuuming Services
High-Dusting Services
Janitorial Services
Special Event Cleaning
Post-Construction Cleaning