Northern California, Build on Your Homesite Video

Same address, new home

If you’ve been thinking about a new home that offers the square footage, modern floor plan, and functional space you’ve been missing, there’s a cost-effective way you can have that and more—by staying right where you are. Build on Your Homesite makes it possible.



1 Maximize the potential value of your existing homesite
2 Bypass a title transfer and tax reassessment
3 Minimize transaction costs with all-in-one, construction-to-permanent loan
4 Secure guaranteed pricing and delivery date on your new home
5 Enjoy up to 20% more value on the most luxurious materials and finishes by working with one of the country’s largest single-lot new home replacement builders

Explore our architectural plans

Designed by architectural firm Woodley Architectural Group, our curated collection of custom home plans feature distinctive architecture, functional spatial design, indoor/outdoor experiences, flexible use spaces, luxe materials, and sophisticated elevations that add to the character of any neighborhood.

Our library of plans is growing rapidly.

Please contact our team directly to learn about the design options for your new dream home.

So many ways
to make it yours

Each home plan comes with a foundational design package to complement the architecture of the home, but the sky’s the limit to what you can customize. Our in-house design team will work with you on personalized selections and upgrades, which may include paint and wall finishes, flooring, countertops, hardware, trim, moldings and millwork, built-ins, lighting plans and so much more.


Bye-bye builder grade

There’s nothing standard about a Thomas James Home. Our included features, with an impressive suite of smart home technologies, leave most available new home product in the dust.

  • Brilliant all-in-one smart home control
  • Ring™ Video Doorbell
  • Wifi-ready programmable digital thermostat
  • Conduit and termination box for EV charging station
  • Smart Lock entry door hardware
  • Wide plank engineered hardwood flooring throughout, carpeted bedrooms; tiled baths
  • Quartz countertops with mitered edge and tile backsplash
  • Spacious walk-in pantry
  • Center island with pendant lighting

See All Included Features

Features may vary per plan and per region. See individual home listings and feature lists for included features.


Selecting a plan for your homesite

All of our plans were designed to work within city and county requirements. We understand the nuances of restrictions, codes and ordinances within each jurisdiction. Our library of plans maximize the size and functionality of our homes on the typical homesites in the neighborhoods in which we build. A TJH representative can help you determine exactly which plans will best fit on your homesite.

Guaranteed, all-inclusive pricing

Everything is included in the listed price and is guaranteed at the point of contract, so there are no unwelcome surprises or hidden costs. Each plan’s price includes complete architecture, construction management, interior design, landscape architecture and installation, and closing services for that home. It also includes, all demo, permit fees, new utilities fees and any additional city-related costs.

Upgrades and customizations

As you begin the design process with our in-house design team, your selected customizations and upgrades will be presented for review and approval in a Custom Design Budget prior to the start of construction. Full transparency of costs is just one of our promises to you.

Industry-leading warranty

Thomas James Homes is one of the few single-lot, new home replacement builders that stands behind its product with an industry-leading warranty. We proudly offer:

10-year warranty against structural and soils-related issues
10-year warranty against unintended water
4-year warranty against system failures
1-year warranty against fit and finish components

And because life is messy and issues don’t always arise at convenient times, we offer a 24/7 live answer helpline so you can speak to a TJH team member when you need them most.

Construction schedule and guaranteed delivery date

Once permits are pulled, we guarantee a 12-month build cycle. While the process may vary, an expected permitting time frame runs anywhere from 60 to 90 days.

During the build process, we make sure to provide regular construction updates, milestone walk-throughs, and timely punchouts so you have no unwelcome surprises on move-in day.


Month 1
Select the best home plan for your homesite, lock-in your price, and execute contract
Months 2-3
Work with our in-house design team to make customizations and upgrades
Months 4-5
Secure required building permits and get your home’s guaranteed delivery date
Months 6-13
Demolition, construction, milestone walkthroughs and punch outs
Month 14-15
Notice of completion, final walkthrough and welcome home
Program economics and taxes

Unlike purchasing a new home in a new location, building on your existing homesite does not trigger a title transfer, which means there won’t be a tax reassessment of your home—potentially saving you thousands. The longer you’ve owned your home, the more you stand to benefit because of your considerably lower property tax base.

Square Footage1 1,500 3,000
Home Value2 $1,300,000 $2,600,000
Construction Costs3 N/A $970,000
Costs Per Square Foot N/A $323
Value Created for Homeowner4 N/A $330,000

1. Maximum new home square footage varies by city and depends on zoning restrictions
2. Home value is an estimate based on historical averages; actual “as-built” home value will vary
3. Based on a 3,000 square foot home; homeowner options and upgrades will increase construction costs
4. The difference between the new home value and construction costs

Special program financing

Offered through preferred lenders, Build on Your Homesite special financing takes your existing mortgage off the books and rolls your new construction loan into a permanent, long-term loan. You only pay a one-time close to minimize transaction costs. For more information, take the next step and request a call or meeting with a TJH representative.


Before you move or enter into extensive remodeling, connect with a Build on Your Homesite program representative. Learn more about the design and build process, your financing options, and home plans suited to your existing homesite.

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