Go Back

Hamilton Exteriors

California

ADU Builders, ADU Designers

0 (0 Reviews)

New

Phone Email

Website

https://hamilton-exteriors.com/

Hamilton Exteriors is a Bay Area design-build construction company led by a licensed architect and general contractor, specializing in custom homes, accessory dwelling units (ADUs), home additions, roofing, siding, remodeling, and exterior renovations. Established in 2018, the company combines architectural design, engineering, permitting, and construction under one roof, providing homeowners with a streamlined project experience from concept through completion.

The company is led by Alexander Hamilton Li, who serves as both architect and general contractor, allowing Hamilton Exteriors to maintain continuity between design and construction while reducing delays and coordination challenges. Their team focuses on delivering high-quality workmanship, transparent pricing, and comprehensive project management for residential construction projects throughout the Bay Area.

Services Offered

Accessory Dwelling Units (ADUs)
Custom Home Construction
Home Additions
Guest Houses
Garage Conversion ADUs
Roofing Services
Siding Installation & Replacement
Kitchen Remodeling
Bathroom Remodeling
Deck Construction
Window Installation
Exterior Renovations
Architectural Design
Engineering & Permit Services

Their design-build model allows homeowners to work with a single team throughout planning, permitting, design, and construction.

ADU & Home Addition Expertise

Hamilton Exteriors specializes in detached backyard ADUs, garage conversions, junior ADUs, and custom home additions. Their team manages site evaluations, architectural design, engineering, permitting, and construction, helping homeowners add living space while complying with California regulations.

ADUs can be used for:

Rental income opportunities
Multigenerational living
In-law suites
Guest accommodations
Home offices
Independent living spaces

The company also offers a permit management process designed to simplify approvals and help projects move efficiently through local jurisdictions.

Roofing & Exterior Renovations

Hamilton Exteriors provides roofing, siding, window replacement, and exterior remodeling services. Their crews are certified by major manufacturers and specialize in durable exterior systems designed to improve curb appeal, energy efficiency, and long-term home protection. The company offers manufacturer-backed warranties along with workmanship guarantees on qualifying projects.

Why Homeowners Choose Hamilton Exteriors

Architect-led design-build company
Licensed General Contractor
In-house architectural and engineering services
ADU and custom home specialists
Transparent itemized pricing
Dedicated project managers
Manufacturer-certified installers
Permit and approval expertise
Financing options available
Building Bay Area homes since 2018

Business Hours

Monday: Open 24 Hours
Tuesday: Open 24 Hours
Wednesday: Open 24 Hours
Thursday: Open 24 Hours
Friday: Open 24 Hours
Saturday: Open 24 Hours
Sunday: Open 24 Hours

Service Area

San Francisco CA
Oakland CA
San Jose CA
Berkeley CA
Palo Alto CA
Roseville CA
Bay Area CA

21634, Redwood Road, Castro Valley, Alameda County, California, 94546, United States

Get Directions