
An overwhelmingly positive response
“It’s been less than a year since we wrapped up work but I just wanted to tell you the number of of ‘wow’s’ from visiting family and friends has been overwhelming.”
Rick McDonough
Sonoma County Homeowner
Your project. Our process.
Our Services
Bielefield Construction is your local Sonoma County builder, committed to helping you improve the livability, enjoyment, and value of your home with remodels, additions, and ADU’s, the strength and integrity of your home with earthquake retrofitting, and the legacy of your home or property with customizations that are built to last.

Additions and Renovations
Bielefield Construction handles a range of residential additions and renovations, including kitchens, bathrooms, ADUs, decks, and whole-home remodels. Each project begins with clear scope definition and practical planning, taking existing conditions into account before work starts. Throughout construction, scheduling, subcontractors, and inspections are coordinated so the work progresses efficiently and integrates cleanly with the existing home.

New Construction
New construction benefits from careful coordination at the outset. Projects are reviewed alongside architects, engineers, and local agencies to align plans, pricing, and logistics before breaking ground. Once construction begins, oversight continues from foundation through finishes, with trades, materials, and inspections managed to deliver a well-built, durable home.

Earthquake Retrofit
Earthquake retrofits and structural upgrades are a key part of maintaining existing homes, particularly older structures common throughout Sonoma County. Existing conditions are evaluated, code-compliant improvements are identified, and the work is completed efficiently. These upgrades strengthen the home and improve long-term performance, often with minimal disruption.

A true 5-star organization!
“We found Bielefield Construction on Home Advisor and were very happy with the final outcome. We made a few changes along the way, and Ray was very accommodating. All employees and subcontractors were pleasant, considerate, and meticulous. We would definitely recommend Bielefield Construction and would use them again if the need arises. A true 5-star organization!”
Sally F.
Sonoma County Homeowner

Your project. Our process.
Working with us
Construction is a process with many moving parts, from budget and timeline to permitting and materials and Bieliefield is an equal stakeholder in the process. Our team is ready to talk to you about your project today. Get started with a free estimate and consultation to review scope, budget, and schedule, and address design, permitting, and constructability early in the process.
FAQs
Do you guarantee timeline and scheduling?
When it comes to building timelines and scheduling, we are joint stakeholders: the best outcome for you is also the best outcome for us.
Because there are so many variables in the building process we offer anticipated start dates and provide time estimates and a schedule for the projected work including all the labor, trades and inspections. Changes in schedule do happen, and it’s our policy to keep our homeowners in the loop and informed along the way.
Can we provide our own materials?
Our accuracy, timeliness and product order completion all play into our ability to ensure a smooth running project for which we take total responsibility. With few exceptions, it is our policy to provide materials.
Do you work with subcontractors?
We use subcontractors for a variety of trades such as roofing, sheetrock, electrical, plumbing, insulation, flooring and painting. All subcontractors hired by Bielefield Construction are licensed and insured. We have solid, long term, relationships with our subcontractors and use only the best.
Ready to start your project?
Contact us today for a free estimate.

I would hire Ray again, without question
“On schedule, quality work, friendly and accommodating. I would hire Ray again, without question.”
Inge S.
Sonoma County Homeowner

