Licensed Bonded & Insured
Start with $0 Down
50 year Warranty
Certified, highly trained installers delivering top-quality service.
Our Reviews
Eric W
2 months ago
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Linda Maiden
2 months ago
I can’t say enough good things about Hamilton Exteriors! We wanted to add an ADU to our property, and after talking with a few companies, we chose them — and I’m so glad we did. Their team was professional, communicative, and made the whole process easy from start to finish. Mark explained every step clearly, and the crew worked efficiently to deliver a beautiful space ahead of schedule. It’s such a relief to see our vision come to life. I’ll definitely be calling them for future projects. Highly recommend!
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Robert Holt
4 months ago
I’m so glad I found Hamilton Exteriors! I was looking to build an ADU and wanted to make sure I chose a trustworthy company — they exceeded all my expectations.
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Laura Gaubin
4 months ago
Hamilton Exteriors built our ADU with incredible attention to detail and a real commitment to quality. The entire process was smooth, and the finished space turned out even better than we imagined.
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Attached ADUS
Attached Accessory Dwelling Units (ADUs) are integrated additions to your existing home that expand your living space while enhancing functionality and value. Whether used as a private suite for family, a rental unit for extra income, or a dedicated workspace, attached ADUs seamlessly blend with your home’s design while providing flexibility and long-term property benefits.
Detached ADUS
Detached Accessory Dwelling Units (ADUs) are standalone backyard homes that offer maximum privacy, flexibility, and value. Perfect for guest suites, rental units, or home offices, these independent structures create additional living space while maintaining separation from the main house. A detached ADU enhances your property’s functionality, provides potential rental income, and adds lasting value to your home.
Conversions
Conversion Accessory Dwelling Units (ADUs) transform existing spaces—such as garages, basements, or attics—into fully functional living areas. This type of ADU is a cost-effective way to maximize your home’s potential without expanding its footprint. Whether you’re creating a rental unit, a private suite for family, or a modern home office, conversion ADUs add versatility, comfort, and long-term value to your property.
Plans & Permits
At Hamilton Exteriors, we simplify the planning and permitting process so you can focus on your project, not the paperwork. Our experienced team handles every detail—from design plans and site assessments to submitting permit applications and coordinating with local building departments. We ensure your project meets all code requirements and moves smoothly from concept to construction, saving you time, stress, and costly delays.
Best Price Guarantee
We promise the most competitive rates in the industry. If you find a lower rate elsewhere, we will gladly beat or match it for you.
Factory Trained Installers
All our contractors are licensed, bonded, insured, and undergo thorough background and business checks.
Industry Leading Warranties
Our roofs are protected by industry-leading warranties, including up to a 50-year shingle warranty and a 35-year labor warranty.
Personal Project Manager
Enjoy a seamless renovation with a dedicated project manager handling all details and communication.
(650) 977-3351
support@hamilton-exteriors.com
21634 Redwood Rd Unit F Castro Valley CA 94546
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