Free Site Evaluation

Take this short 10 question survey and receive a custom proforma, feasibility analysis and pre/post home value comparison.

I'm interested

A Complete, End-to-End Solution for Building Your Own ADU

Step 1:  Finance

If you need financing, we get you pre-approved with one of our  ADU construction financing partners with the lowest interest rates.

Step 2:  Plan

Collaborate with the entire team to determine the project budget, scope, design, requirements and feasibility.

Step 3:  Permit

We work with your city planning and building departments to get your project approved.

Step 4:  Build

Web-based project management software helps keep your project on schedule and within budget. You're in the loop at all times.

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FREE: Homeowner's Guide to

ADUs

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436 SQFT ADU FLOOR PLAN

963 SQFT ADU FLOOR PLAN

676 SQFT ADU FLOOR PLAN

750 SQFT ADU FLOOR PLAN

Why choose us?

No Prefab

100% stick-frame construction that is built on-site. We use quality materials and skilled workmanship and it shows.

Ground-up construction

 We are dedicated to improving the overall value of your home.​

Improvement

We are passionate about making a positive contribution to the communities where we build.

Accessory Dwelling Unit

Mother-in-law Unit   *    Granny Flat   *   Backyard Cottage   *   Accessory Dwelling Unit   *   Guest House   *   Pool House

Building an ADU has never been easier!

Konhoff Company will help you finance, design, plan, and build your attached or detached ADU (accessory dwelling unit or in-law unit) from the ground up.

New California legislation is reducing development requirements and making the development of ADU's easier for homeowners. Reduced utility hookup fees, parking requirements, and back yard setbacks are just a few of the factors that make it easier for you to develop an ADU right in your own backyard!

We specialize in fast completion times and alternative financing. Let your backyard provide you with a new stream of income. Are you ready to finance and build your ADU? Get started with a FREE, NO OBLIGATION site evaluation. 
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Yes, Start My Project

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One Turnkey Process

Step 1:  Contact Konhoff Company to discuss project specifications and financing options.

Step 2:  Choose from 3-4 ready-to-go floorplans (detached units) or set up a architecture consultation for attached units. Alternatively, you may submit your own design, which will be subject to our architecture and engineering review.

Step 3:  Konhoff Company handles the permitting process with the City.

Step 4:  Using economies of scale, we build your ADU to your specifications, with checkpoints along the way.

Step 5:  Optionally, we can help you lease up your new ADU and provide 24/7 rental management and maintenance.

Recent (2018-2019) Granny Flat / ADU Examples in Contra Costa County

Walnut Creek, CA

Unit Size:   700 sf  2bed/1ba
New Construction
Monthly Rental Income:   $2,700/mo

Pleasant Hill, CA

Unit Size:   1200 sf  2bed/1ba
New Construction
Monthly Rental Income:   $2,350/mo

Lafayette, CA

Unit Size:  615 sf  2bed/1ba
Garage Conversion
Monthly Rental Income:   $2,650/mo

Help me Build my ADU

ADU Financing Available through Freedomstar Financial

Special Financing Options Available

FHA 203K Program    FNMA Homestyle   Cash-Out Refinancing options

Get Pre-Qualified

Convert your Detached Garage to an Income Producing ADU

Mother-in-law Unit   *    Granny Flat   *   Backyard Cottage   *   Accessory Dwelling Unit   *   Guest House   *   Pool House

​After Rent: $2,300/month

Before Rent: $0

      Alamo     Danville     Lafayette     Orinda     Pleasant Hill     San Ramon     Walnut Creek

The Konhoff Company Difference

 We give you a complete finance, design, build solution without the high markups of a traditional design-build firm.  How? By giving you full access to our roladex of contractors. You save money by acting as your own project manager. We help by by fully vetting the team based on experience and client satisfaction. Our approach centralizes the entire process under one roof and provides you with a safe, guided approach to building your accessory dwelling unit on time, and under budget. These are expert professionals with whom we choose to work on our own investment projects.

We allow homeowners to act as professional developers with our guidance, and our professional contacts. We offer fully vetted Civil Engineers, Surveyors, Architects, Soils Engineer, Concrete, Framers, Drywaller, Plumbers, Electricians and skilled labor in all the various trades. We will help you shop for materials and get access to our wholesale pricing.

Hiring your own contractors is risky. There are very few barriers to entry and many are underfunded and go out of business. This could potentially leave you with no warranty on your project. Even worse is a half-finished project. 

Traditional Design/Build firms manage the entire process (except for financing) at a high markup. Konhoff Company gives you the option to be your own developer and build your project at a fraction of the price. When you work with us, you eliminate the risk of hiring unlicensed, inexperienced workers.

Don't have time to manage the project yourself? Consider hiring one of our professional Project Managers and we will keep your project on track and on budget.

Traditional Design/Build firms do not offer financing. At Konhoff Company, the financial component is at the core of everything we build. Our expertise in construction financing helps keep costs in line with the funds released by the bank. 

Design/Build firms do not always take into account the level of improvement your property can financially sustain. Our expertise in real estate development can help you determine the right number to spend that will add value to your property, without overspending.