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 to Help You Build 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 licensed contractors 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

We provide continued consultation for the duration of your project - helping manage costs and timelines.

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FREE: Homeowner's Guide to

ADUs

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436 SQFT ADU FLOOR PLAN

963 SQFT ADU FLOOR PLAN

461 SQFT ADU FLOOR PLAN

381 SQFT JADU FLOOR PLAN

676 SQFT ADU FLOOR PLAN

750 SQFT ADU FLOOR PLAN

748 SQFT ADU FLOOR PLAN

978 SQFT ADU FLOOR PLAN

Case Study
Diane & Dennis R.  Contra Costa County 

2020 COMPLETION!
- Utilized homestyle renovation financing
- $8,500 out of pocket, financed the remainder of the project
- 7 months construction start to finish
- $205,000 Initial Budget.   $206,000 Finished Project Cost

When faced with rent increases at their senior apartment complex, the Rossetto's decided to look at other options.   Rents had gone up from $1300 to $1424 and the next increase was set for another 9.5% hike.  They looked at different options to fit their retirement budget.   They looked at condos, mobile home parks and senior communities.  None of these options were going to be cheaper than what they were currently paying.   Mobile Home parks had expensive land rents and condos were too high priced and had expensive HOA payments.  They heard about the new ADU laws and decided to contact Konhoff Company and explore their options with the house they had owned for years but were currently renting to their daughter and son-in-law.  By using a renovation loan, they would be able to finance an ADU based on the finished value of the property with the ADU on it.   Without this feature, they did not have enough equity to finance the project.   Their mortgage payment before the ADU project was $2290/month.   After the ADU project, their new monthly payment was $3057/month.   An increase of $767/month.   The added cost of the ADU was about half of what they were paying for apartment rent.   In addition, they were set with a 30 year fixed rate and no longer had to worry about rent increases.  Their monthly housing expense decreased by almost 50% in the first year!  

Utilize Our Experience

We will set you up with one of our preferred licensed contractors to get your project built using 100% stick-frame construction (no pre-fab).   As an ADU certifed expert, we can help you avoid common pitfalls with financing, design and construction management.

Improvement

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

Why choose us?

Utilize Our Experience

We will set you up with one of our preferred licensed contractors to get your project built using 100% stick-frame construction (no pre-fab).   As an ADU certifed expert, we can help you avoid common pitfalls with financing, design and construction management.

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. 
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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 an architecture consultation to design your site-specific unit. 
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Step 3:  Konhoff Company handles the permitting process with the City.

Step 4:  Build your ADU to your specifications, with checkpoints along the way.  

Recent (2019) ADU Examples in Contra Costa County

Pleasant Hill, CA

Unit Size:   676 sf  1bed/1ba
New Construction
Monthly Rental Income:   $2,350/mo

Pleasant Hill, CA

Unit Size:  450 sf  1bed/1ba
New Construction
Monthly Rental Income:   $2150/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 consulting solution to get your ADU built 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 will set you up with fully vetted and licensed Civil Engineers, Surveyors, Architects, Soils Engineer, Concrete, Framers, Drywaller, Plumbers, Electricians and skilled labor in all the various trades. We can 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 us as a professional Project Manager 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.