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Vendor Directory

Find your professional team

Our mission is to help homeowners in Napa and Sonoma Counties build accessory dwelling units (ADUs) by providing homeowners with education, resources, and information.

One of the most common requests we get is for assistance with identifying the professional team that will help folks on their ADU project. To assist homeowners with this, on an ongoing basis we add vendors to the list below that can help you with a number of aspects of your ADU project.

The Napa Sonoma ADU Center’s role is limited to serving as an objective nonprofit resource for homeowners.

We want to help you ask the right questions to inform your decisions regarding the selection of a professional ADU team. Any contract for services on a homeowner’s ADU project is between each homeowner and your chosen professional team. Once you engage professionals, the Napa Sonoma ADU Center is available to help answer your questions on an as-needed basis along the way.

Finance Professionals

Elisabeth Giron

Searchlight Lending

Oficial de préstamos hipotecarios

Se habla español.

Mobile number: 415-827-5415

Gary Lentz

Loan Depot

Loan Consultant

Laura Blair

BuildZig Funds Control

Construction Escrow Account Provider

Lindsay Moon

Searchlight Lending

Licensed broker and builder

Provides both traditional and non-traditional financing, e.g. for undocumented, unemployed, self-employed, & other individuals.

RenoFi

Second mortgage Home Equity loans based on the AFTER-construction value of your ADU.

  • Loan amounts up to $499,999
  • CalHFA $40,000 ADU grant available

Sean Charter

Redwood Credit Union

Assistance Manager – Construction Lending

Our partner on an innovative ADU construction loan product that opens up financing for homeowners who may not be able to qualify for traditional financing. Learn more here & reach out to RCU for a 1:1 consult!

Architects + Designers

Cottage Tech

Design and Construction

Craiker Architects

Architect

Fritz Architecture-Urbanism

Architect

Inspired ADUs

Architect

JLM Designs

Designer

Kenneth P Munson – Architect, A.I.A.

Architect

Morse & Cleaver Architects

Architect

Napa Design Partners

Architect

North Coast Packaged Homes

Designer

Paul Kelley Architecture

Architect

For more resources, please check out our ADU Workbook, including information on how to select a design professional and a useful Initial Design Exercise activity.

Permit Assistance

Keystone Construction Group, Inc.

Preconstruction/Permitting Services

Paladin Permit Services

Permitting Assistance

Pridmore & Company Inc.

Surveying/Permit Consultation

General Contractors + Builders

Brandywine Building & Design

Brandywine Building & Design

Devine Construction

Devine Construction

Fondare Finish Construction

Fondare Finish Construction

GreenRun Construction

GreenRun Construction

Hare Construction, Inc.

Hare Construction, Inc.

IMH Construction

IMH Construction

JMW Builders

JMW Builders

Matthew Scott Construction

Matthew Scott Construction

Sonoma County Builders, Inc.

Sonoma County Builders, Inc.

Valley Home Development Corp.

Valley Home Development Corp.

For more guidance on how to choose a general contractor, please visit our Construction page and our ADU Workbook.

Prefab Builders

Abodu

Adore Homes

Hybrid Prefab Homes

JPW Development Co., LLC

John Piccolo-Wignall

Manufactured

Perpetual Homes ADU

prefabADU

Prefab Panelized Kits

Wolf Industries

See more about traditional vs. prefab construction on our ADU 101 page, our Getting Started page, and our ADU Workbook.

Geotechnical Engineers

PJC Associates

Engineers

BC Engineering Group

Civil Engineer

MKM & Associates Structural Engineers

Structural Engineer

More Professionals

The professionals on this list work in both Napa and Sonoma counties and perform site evaluations and design alternative sewer disposal systems. They may offer various other services including geotechnical analysis, septic analysis, surveying, civil engineering, etc.

The professionals on this list are qualified septic consultants.

ZFA Structural Engineers

Structural Engineer

Title 24 / CalGreen Energy Consultants

A Title 24/CalGreen Energy consultant is a specialist who analyzes architectural plans to ensure they comply with Title 24, the code section that deals with energy efficiency, and CalGreen, the “green building code.”

Typically the designer/architect will handle the relationship with the Title 24/CalGreen consultant. There may be 1 or 2 rounds of finessing the design to make it comply before it can be submitted to the jurisdiction for approval. Check out our ADU Workbook for more information on Title 24.

Some jurisdictions require that homeowners select a consultant from their list of approved vendors, including the City of Santa Rosa, Sonoma County, and City of Sonoma. Those lists of consultants, who can also work in other jurisdictions, are included here:

Additional Resources for Hiring Vendors

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