Home Additions · Tooele County

Home additions in Tooele County, Utah

5-star rated by Tooele County homeowners. Locally owned by Danny & Trayson.

★★★★★“Finished on time and within budget.”Garrett M.
★★★★★“Top notch work and a quality finish.”Stan G.
★★★★★“Ten out of ten. Stayed on timeline.”Tori M.

Add the room you need and keep the home you love. We build new bedrooms, bathrooms, home offices, and family rooms onto Tooele County homes, matched to the house you already have, with one honest price in writing.

20+ years of experience Free written estimates Financing available
A finished home office by Upterra Builders Tooele County, Utah
20+
Years of experience
157+
Projects completed in the area
5
Star-rated by homeowners
Free
Written estimates, no pressure

We know what you are really worried about

The fears we hear most before a home addition in Tooele County

After doing this out here for 20 years, we can almost guess what is on your mind before you say it. The people in Tooele County who call us are nervous about the same handful of things. Here is what we hear, and exactly how we handle each one.

“It is going to cost way more than the estimate”

That fear is earned. Most of the horror stories out here start with a low bid and a pile of change orders. We put one honest, itemized price in writing before we start, and it does not move unless you change the plan.

“It will look like a tacked-on box that does not match my house”

A bad addition screams addition. We match the roofline, the siding, and the trim so the new space looks like it was always part of the house, inside and out.

“The permit and inspections will be a nightmare”

We pull the permit, handle the inspections, and build it to code, so it is done right and it will not come back to bite you when you sell.

“We will be living in a construction zone for months”

We seal the work off from the rest of the house, keep the dust down, give you a real schedule, and keep the job moving so you get your home back.

“They will start, then disappear on me”

You have seen the half-finished jobs where the crew left to chase the next check. We are local, we finish what we start, and Danny and Trayson are on your job, not off starting three others.

What a home addition includes

One crew, from footing to finished room

You get one team for the whole addition, so nothing falls through the cracks between trades.

Design & permits

We lay out the new space, pull the Tooele County building permit, and schedule every inspection so it is legal and done right.

Foundation & framing

We pour the footing and foundation, then frame the new walls and roof so the addition is solid and built to last.

Roof tie-in & exterior match

We tie the new roof into the old one and match the siding, trim, and windows so the addition looks like it was always there.

Electrical & plumbing

Outlets, lighting, heat, and rough-in for a new bathroom, laundry, or wet bar, all tied cleanly into your home.

Insulation & drywall

Insulated and sealed for our cold Tooele winters, then drywall, texture, and paint that matches the rest of the house.

Flooring & finish

Luxury vinyl plank, carpet, tile, trim, and doors, finished to feel like it was part of the home from day one.

Our specialty

Add the room you need without moving

Your family has outgrown the house, but you love your street and your low mortgage rate. An addition gives you the extra bedroom, bathroom, or office you need, without the cost and upheaval of buying a bigger home.

  • The space your family needs. A new bedroom, a bathroom, a home office, or a bigger family room, laid out to fit your life.
  • Keep your home and your rate. No selling, no moving, and no trading your low mortgage rate for today's higher one.
  • Built to match. We tie into your roof and match the siding and trim so the addition looks like it was always part of the house.
  • One honest price. You see a real written number before any work starts, not a surprise later.
A finished, bright home office with a mountain view

Why an addition

Build an addition, finish the basement, or move?

Most Tooele County families who want more space are weighing these three. Here is the honest comparison.

  Build an addition Finish the basement Move to a bigger home
Cost per square footHighLowestHighest
TimelineSeveral monthsA few weeksMonths, plus a move
Adds bedrooms and a bathYes, on your main floorYesMaybe
Keeps your home and rateYesYesNo
Disruption to your lifeSome, mostly outsideLow, it stays downstairsVery high

Every home is different. The fastest way to a real number is a free walkthrough.

Free, no pressure

Ready to see what your addition would cost?

How much will my addition cost?

Recent work

Finished spaces we have built in Tooele County

Every photo here is a finished room from an Upterra Builders project. Tap any photo to see it larger.

A finished great room with a living area and daylight windows
Great roomRoom for the whole family
A finished home office with a bright window and clean trim
Home officeA quiet place to work
A finished bedroom with fresh paint and plush carpet
BedroomFresh, comfortable, done
A finished living space with recessed lighting and luxury vinyl plank flooring
Living spaceRecessed lighting
A finished room with clean drywall, trim, and carpet
Finished roomFramed, wired, finished

Start here

Get a real written price for your addition.

How much will my addition cost?

Local addition experts

We build additions on Tooele County homes

We have added onto homes all over Tooele County, so we know the houses here. Out in Erda and Grantsville, the lots run bigger, so there is room to spread out and add on the ground floor. In Stansbury Park and Overlake, growing families often need one more bedroom or a real home office before they will make the long commute to the Salt Lake valley worth it. An addition lets them stay put and get the space they need.

We know what the Tooele County Building Department looks for, and we pull the permit and schedule the inspections ourselves. We match the new roofline, siding, and trim to the existing house so it does not look tacked on. And when the budget is the question, we can point you to financing so you can spread the cost out. You are not handed off to a salesman here. You get Danny and Trayson, the two people who are actually on your job.

Why Upterra

You work with the owners, start to finish

Upterra Builders is not a big company with a sales office. Danny and Trayson run the jobs themselves, so the people who quote your project are the same people who finish it.

Owner-run

Danny and Trayson quote the work and stay on the job. No handoff to a project manager you have never met.

One honest price

You get a real written estimate before the work starts. If the budget and the plan do not match, we tell you up front.

Local to Tooele County

We work in Tooele, Stansbury Park, Grantsville, Erda, Stockton, and nearby. We know the local permit process.

Finished right

Clean framing, straight tile, and a crew that treats your home like it is theirs. Homeowners tell us so.

Reviews

Trusted by homeowners across Tooele County

★★★★★ Aug 2025
Danny and Trayson were outstanding to work with. Very professional, and they provided top notch work and a quality finish.
SG Stan GaillardHomeowner, Tooele County
★★★★★ Jun 2025
First time we have ever had a general contractor finish on time and within budget. Would highly recommend to anybody in the area.
GM Garrett McClintockHomeowner, Tooele County
★★★★★ Apr 2025
I am very pleased with the final product on finishing my basement. I am happy with the final outcome. Thank you Upterra Builders.
LA Lesieli AfuBasement finishing
★★★★★ Mar 2025
Rare to find a contractor who actually takes the time to find the right solution instead of just pushing a sale.
CE Casey EwingHomeowner, Tooele County
★★★★★ Dec 2024
Really easy to work with. We came in with ideas and they gave us suggestions, put together a plan, and helped us make it our own.
CH Cameron HarperKitchen remodel
★★★★★ Sep 2025
The team at Upterra was amazing to work with. They stayed with the projected timeline. Ten out of ten.
TM Tori MapuHomeowner, Tooele County

Swipe to read more reviews →

Where we work

Serving Tooele County and nearby

Upterra Builders is based in Tooele County and finishes basements and remodels homes across the whole valley.

Not sure if you are in our area? Ask anyway. We travel across the county.

Questions

The things people ask first

How much does a home addition cost?
It depends on the size of the addition and what goes in it, like a new bedroom, a bathroom, or a bigger family room. Nobody can give you a real number from a web page. What we can do fast is walk your home, talk through what you want, and put an honest written price in front of you, for free.
How long does an addition take?
Most additions take a few months from the first shovel to the finished room, because we pour a foundation, frame new walls and a roof, and run new electrical and plumbing. We give you a real timeline before we start, and Danny and Trayson keep you posted the whole way.
Do I need a permit to build an addition?
Yes. Adding onto a home in Tooele County needs a building permit and inspections. We handle the permit with the Tooele County Building Department and build to code, so it is done right and it passes inspection.
How do you match the addition to my existing house?
We tie the new roof into the old one and match the siding, trim, windows, and paint as closely as we can. Inside, we carry the same flooring and finish through so the new space feels like it was part of the home from the start, not tacked on.
Can we live in the home while you build the addition?
In most cases, yes. Because an addition is built onto the outside of the house, a lot of the work happens before we open up into your home. We seal off the work area and keep things clean, and we plan the messy parts with you so your family can keep living there.
Is the estimate really free, and do you offer financing?
The estimate is free, with no pressure. Financing is available for approved buyers through our lending partner, so you can spread the cost of the addition out over time instead of paying it all at once.

Tell us what you want to build

Maybe it is an unfinished basement, a basement apartment, a new kitchen, or a bathroom that is past its time. Start with one free estimate.

Or call or text us any time
Call or text (435) 248-0339 Free estimate