Westphalen Construction

Building Northern California with Precision and Integrity

Residential Construction

From concept to completion, we deliver custom homes, additions, and remodeling projects tailored to your lifestyle and budget. Whether you’re planning a dream kitchen or a whole-house transformation, our team ensures every detail reflects your vision.

Commercial Construction

We bring function and professionalism to every square foot. Our commercial services focus on efficiency, safety, and long-term durability.

Remodels & Renovations

Transform outdated or inefficient spaces into fresh, functional, and modern environments.

Full Builds & ADUs

We handle complete construction projects including standalone homes and ADUs, giving homeowners more space and flexibility—whether for rental income, multigenerational living, or creative studios.

Ground-up construction

Garage conversions

Detached ADUs

Modular builds

Permitting & planning support

Our Best Projects

Innovative Designs, Timeless Impact: Our Latest Architectural Endeavors

Residential Construction

From concept to completion, we deliver custom homes, additions, and remodeling projects tailored to your lifestyle and budget. Whether you’re planning a dream kitchen or a whole-house transformation, our team ensures every detail reflects your vision.

Custom homes
Room additions
Interior/exterior renovations
Kitchen & bathroom remodels
Outdoor living spaces

View Project

Commercial Construction

We bring function and professionalism to every square foot. Our commercial services focus on efficiency, safety, and long-term durability.

Office buildouts

Retail & storefront construction

Medical & dental offices

Educational & institutional spaces

Restaurant & hospitality spaces

View Project

Tenant Improvements

Make your leased or commercial space work for you. Whether you’re updating for a new tenant or rebranding, we manage everything from demolition to the final finish.

Floorplan modifications