American Custom Contractors

Diamond Certified Company Report
Scan to Call
Contact Number
diamondcertified logo
American Custom Contractors
100 SURVEYS
SINCE JUNE 2026
CERT 2942

Diamond Certified Ratings Dashboard

100
Verified Customers
Surveyed
Customer Loyalty
Customer Satisfaction
Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Company Report Menu

  • Survey Responses (reviews)
  • Researched Articles & Profile
  • Capabilities
  • Photos
  • Website & External Feeds
logo
American Custom Contractors
Diamond Certified Company Report Menu

Schedule Now or Call with Questions

(301) 640-5454
logo

American Custom Contractors

Roofing, Windows, Doors & Siding Contractor
|
District of Columbia  Fairfax  Montgomery  Prince George's Counties
(301) 640-5454
diamondcertified logo
1 CONSECUTIVE YEAR

Diamond Certified Researched Articles on American Custom Contractors

researched article

A recent residential roofing project by American Custom Contractors

company logo

American Custom Contractors repairs, replaces, maintains, and inspects roofs for residential and commercial clients in Montgomery County, Prince George’s County, Fairfax County, and the District of Columbia. In addition to working on all types of roofing systems, the family-owned company has the in-house capabilities to install siding, windows, gutters and other exterior home renovation products.

Co-owner William Giakoumatos says American Custom Contractors is driven by a passion for performing at a high level. “We love transforming properties and providing our clients with the best possible work at the best possible price. Ultimately, our favorite part of the job is seeing the smiles on their faces when we’re able to exceed their expectations.”

American Custom Contractors takes a detail-oriented approach to every aspect of its work, which Mr. Giakoumatos says is important for ensuring positive results. “Whether we’re navigating an insurance claim or handling a straightforward retail transaction, our clients know we’re going to execute at the highest level. They hold us to a higher standard because they trust that we’ll do the right thing.”

Diamond Certified Researched Capabilities on American Custom Contractors

Service Area

serving area
Montgomery County
Prince George’s County
Fairfax County
District of Columbia
Serving Montgomery County, Prince George’s County, Fairfax County and the District of Columbia

Main Services

Siding Contractor
  • Aluminum Siding
  • Board And Batten Siding
  • Cedar Siding
  • Fiber Cement Siding
  • Hardie Board Siding
  • House Siding
  • Metal Siding
  • Siding Installation
  • Siding Replacement
  • Stucco Siding
  • Vinyl Siding
  • Wood Siding
Roofing
  • Cedar Shake
  • Metal Shingles
  • Residential Roofing
  • Roof Coatings
  • Roof Inspection
  • Roof Leak Repair
  • Roof Repair
  • Roof Replacement
  • Roofing Installation
  • Steel Roofing
Windows
  • Replacement Windows
  • Velux Skylights
  • Window Installation
  • Window Replacement

Additional Services

null

Company Info

Hours
Mon
08:00 am - 06:00 pm
Tue
08:00 am - 06:00 pm
Wed
08:00 am - 06:00 pm
Thu
08:00 am - 06:00 pm
Fri
08:00 am - 06:00 pm
Sat
09:00 am - 01:00 pm
Sun
Closed
Closed
Contact
American Custom Contractors

Capabilities Table

Company Name
American Custom Contractors
Managers
William Giakoumatos and Demetri Giakoumatos, Owners
Years in Industry
50+ (Combined)
# of Employees
43
License
2705088927, 279
Founded
1972
Payment Accepted
american express,
discover,
mastercard,
visa

Select Photos From American Custom Contractors

1 of 5Picture of The intricate design of this newly installed roof showcases the craftsmanship of American Custom Contractors, a company recognized for its expertise and quality. Each shingle is meticulously placed, reflecting a commitment to durability and aesthetic appeal. This project not only enhances the home's exterior but also ensures long-lasting protection. Copyright ©2026 Diamond Certified Resource - American Custom Contractors
The intricate design of this newly installed roof showcases the craftsmanship of American Custom Contractors, a company recognized for its expertise and quality. Each shingle is meticulously placed, reflecting a commitment to durability and aesthetic appeal. This project not only enhances the home's exterior but also ensures long-lasting protection. Copyright ©2026 Diamond Certified Resource
Picture of The intricate design of this newly installed roof showcases the craftsmanship of American Custom Contractors, a company recognized for its expertise and quality. Each shingle is meticulously placed, reflecting a commitment to durability and aesthetic appeal. This project not only enhances the home's exterior but also ensures long-lasting protection. Copyright ©2026 Diamond Certified Resource - American Custom Contractors
Picture of  The intricate roofing of this elegant home showcases the craftsmanship that American Custom Contractors is known for. With a focus on quality outcomes, the company ensures that every detail, from the skylights to the shingles, reflects their commitment to excellence. This project exemplifies their dedication to achieving the highest standards in home improvement. Copyright ©2026 Diamond Certified Resource - American Custom Contractors
Picture of  In this serene neighborhood, the well-maintained roofs reflect the commitment to quality that American Custom Contractors embodies. Each home stands as a testament to the company's focus on quality outcomes, ensuring that every detail contributes to the overall beauty and durability of the community. Copyright ©2026 Diamond Certified Resource - American Custom Contractors
Picture of The intricate craftsmanship of this slate roof, adorned with copper flashing, reflects the dedication to quality that American Custom Contractors embodies. Each detail tells a story of durability and aesthetic appeal, ensuring that homes not only stand the test of time but also enhance their surroundings. Recognized for expertise and quality, the company is committed to delivering exceptional results. Copyright ©2026 Diamond Certified Resource - American Custom Contractors
Picture of The intricate design of this newly installed roof showcases the craftsmanship of American Custom Contractors, a company recognized for its expertise and quality. Each shingle is meticulously placed, reflecting a commitment to quality outcomes that ensure durability and aesthetic appeal. This project not only enhances the home's value but also its character. Copyright ©2026 Diamond Certified Resource - American Custom Contractors

American Custom Contractors Website and External Feeds

Website

FAQs
By American Custom Contractors

American Custom Contractors Ratings and Survey Responses (reviews)

diamondcertified logo
American Custom Contractors
100 SURVEYS
  • 4.8
  • star image
  • star image
  • star image
  • star image
  • star image
SINCE JUNE 2026
CERT 2942

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance
American Custom Contractors

Based in Rockville, MD

4.8 avg. star score from 100 Verified Customer Phone Survey Responses

(Reviews: Scroll down to read them.)

Our surveys of only verified real customers produce the country’s most accurate ratings of local companies. American Custom Contractors scored Highest in Quality and Helpful Expertise and passed the credential-based checks to earn Diamond Certified.

A Star Equivalent Score is calculated for each verified customer rating by weighting the 1–10 Quality score, the YES/NO Loyalty (intent to return) score and the YES/NO Helpful Expertise score. If Helpful Expertise wasn’t surveyed or didn’t apply, it’s simply not shown.