Pre-Development Consulting and Project Management for ADUs and Factory-Built Housing in California
Before You Buy a Home, Know What Your Property Can Support.
ContractorDave helps California property owners research and plan the right project before expensive mistakes are made. Northgate Construction Services provides the licensed site development, construction management and installation capability to bring it to completion.


Property Research & Planning
Every parcel is different. We identify the issues that can affect your project before plans, products or construction begin.
Site Evaluation
Preconstruction & Project Management
Property Research
We help coordinate plans, permits, budgets, contractors and construction steps from preparation through completion.
We research zoning, setbacks, utilities, access and other property conditions before you commit to the wrong project.
We evaluate the actual property, identify visible obstacles and determine what needs deeper investigation.








EXPERIENCE THAT CONNECTS THE WHOLE PROJECT
30+ Years Connecting the Property, the Plans and the Build.
ContractorDave is David C. Bordwine, CEO and qualifying General Contractor of Northgate Construction Services, Inc., and a principal of USBuiltHomes. He brings more than 30 years of California construction, plumbing, underground, manufactured-home, sales, permitting and project-management experience.
That combination matters because the home, property, permit path, foundation, utilities, delivery plan and field trades must function as one coordinated project. Dave knows how to identify conflicts early, separate confirmed information from assumptions and bring the right contractors, engineers, agencies and suppliers into the process.
ESTABLISHED NETWORK
Northgate established in 1995, with nearly 25 years of manufactured-housing engineering collaboration
LICENSED CAPABILITY
California B General Building, C-47 Manufactured Homes and C-36 Plumbing
CSLB #716418
INDUSTRY AUTHORITY
ICC-published author of Alternative Foundation Systems in The Tiny House: Building It Right
PROVEN FIELD EXPERIENCE
Installing contractor for the first THOW in the City of Fresno and the first THOW installed as an ADU in Fresno County
How Your Project Moves Forward
Research first. Plan carefully. Then develop the site and build or install the right project.
01 — Research
ContractorDave
Property conditions, zoning, access, utilities and project feasibility.
02 — Plan
ContractorDave + Northgate
Turn the research into a practical scope, budget, plans and permit path.
03 — Develop the Site
Northgate
Coordinate foundations, grading, utilities, access and site preparation.
04 — Build / Install
Northgate
Coordinate construction, installation, inspections and final completion.

Northgate Construction Services turns the research and plans into a completed project—coordinating site development, foundations, utilities, construction, installation, inspections and closeout.
Research It With ContractorDave. Build It With Northgate.
Plumbing and underground construction
General construction and completion work
Project management, inspections and closeout
Manufactured-home and HUD ADU installations
Foundations, anchoring and home setup
Site development and utility coordination
Before You Buy a Home, Know What Your Property Can Support.
ContractorDave helps California property owners research and plan the right project before expensive mistakes are made. Northgate Construction Services provides the licensed site development, construction management and installation capability to bring it to completion.



WHY USE CONTRACTORDAVE ?
Most installers show up after decisions are already made.
We’re brought in to make sure those decisions don’t cost you later.
From foundations and access to utilities and site conditions, we focus on the parts that determine whether a project moves forward smoothly — or stalls.


30+ years real construction experience
ICC-published authority on foundation systems
Hands-on install crews, not brokers or sales reps

California's Premier Installation Team
At ContractorDave, we specialize in expert installations for tiny homes, park model RVs, mobile homes, and HUD ADUs across California.






Why Choose Us
Licensed and experienced, we provide state-approved engineered plans and a full installation package, ensuring quality and efficiency in every project.

Expert Installation Services
California's top choice for efficient, reliable installation of tiny homes and mobile structures.
Licensed Installation Experts
We provide engineered state-approved plans and professional installation for all your projects.


Comprehensive Install Solutions
Our team delivers engineering, foundation systems, and expert installation for every project across California.



No Job Too Difficult
California's top choice for ADU, tiny homes and mobile home installations.












Customer Reviews
See what our clients say about our exceptional installation services.
When my new home arrived David and crew took care of every aspect to make sure everything was perfect. They worked feverishly to complete the set up and completion of my home in approximately 4 weeks. They do an excellent job, they care about quality and it shows in everything they do. They are the best!
Karen Mechelke
Clovis
I cannot say enough good things about ContractorDave & Northgate Construction. All their personnel are very responsible, skilled and polite. You can rely on them to do a good job for you and to charge you a fair price.
Nancy Shobe
Fresno
★★★★★
★★★★★

Get in touch
ADU for California
California's top choice for ADU, Tiny Home, Park Model RV, and Mobile Home expert installations.
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