Home Additions in Lehi, Utah
Lehi’s neighborhoods, from the established streets near Main Street to the newer subdivisions in Traverse Mountain and Holbrook Farms, share the same limitation: the floor plan you bought is the floor plan you have, and moving in this market often means paying a premium for square footage you could build onto the home and lot you already own. Ironwood Custom Builders designs and builds home additions in Lehi that match your existing rooflines, materials, and finishes closely enough that the addition looks like it was always part of the house, using the same crews and detail-first process that go into our custom homes.
A home addition is one of the larger decisions a homeowner makes, because it touches the structure, the exterior, and often the foundation of a house you already live in every day. That is exactly why it deserves a contractor who scopes the whole project before a shovel goes in the ground, not partway through. Whether you need one more bedroom, a larger primary suite, or a fully separate living space for family, the process starts the same way: a real design and a real number, before any work begins.
What a Lehi Home Addition With Ironwood Includes
An addition is one of the most technically demanding projects in residential construction, because it has to tie into an existing structure correctly on every level. Here is what our full-service home additions work covers:
Design and structural engineering.
We design the addition around your existing home’s footprint, rooflines, and structural systems, then bring in the engineering needed to tie new framing and foundations into the old correctly. This is where an inexperienced contractor causes the most expensive mistakes.
Exterior matching.
Siding, roofing, windows, and trim are matched or complemented so the addition reads as part of the original home rather than an obvious add-on, both from the street and from your own backyard.
Foundation and framing.
Depending on the addition type, this means a new foundation footprint, a second-story load path over existing walls, or both. We handle the full structural scope, not just the finish work.
Plumbing, electrical, and HVAC extension.
New space needs its systems tied into your home’s existing utilities correctly sized for the added square footage, whether that is a full bathroom in a suite addition or extra circuits in a garage or bonus room.
Interior finishes.
Flooring, trim, paint, and fixtures are selected to match or intentionally complement the rest of the home, so the transition between old and new space feels seamless.
Permitting.
Additions require the most involved permitting of any remodeling project, since they change your home’s footprint and structural systems. We manage every submission and inspection through Lehi City and Utah County.
Project management.
One Ironwood project manager runs the entire job and is your single point of contact from the first design meeting to the final walkthrough.
Common Home Additions We Build in Lehi
- Primary suite additions, adding a larger bedroom, walk-in closet, and full bath to a home that has outgrown its original primary.
- Second-story additions, building up over an existing single-story footprint when the lot has no room to build out.
- Garage and shop expansions, common in Lehi given the lot sizes in the newer subdivisions and the demand for extra vehicle, hobby, or storage space.
- Sunrooms and covered outdoor living additions, extending usable living space to take advantage of Utah’s long shoulder seasons.
- Accessory dwelling units (ADUs), a detached or attached secondary living space for extended family, a home office, or rental income. Utah’s ADU rules vary by city, and Lehi has its own zoning requirements. Ironwood confirms what is allowed on your specific lot before design begins, so you are not designing toward a plan the city will reject.
- In-law or multigenerational suite additions, a private bedroom, bath, and small kitchenette space attached to the main home rather than fully detached.
What a Home Addition Costs in Lehi
Utah County experience.
Lehi permits and inspects through Lehi City and Utah County, not Salt Lake County. Our project managers know the local process, so your bathroom remodel does not stall waiting on paperwork.
Accurate upfront pricing.
You get a real number before you commit. Our pre-construction process is detailed enough that surprises are genuinely rare, which matters most in a bathroom, where old plumbing and subfloor conditions are common once tile comes out.
One point of contact.
You work with one project manager start to finish. No chasing subcontractors, no crossed wires between the plumber and the tile crew.
Award-winning craftsmanship.
Ironwood has been recognized across nearly every category of the Parade of Homes, and the crews that build our custom homes are the crews that build your bathroom.
On-time, on-budget guarantee.
We build a realistic schedule and hold to it, backed by our on-time, on-budget guarantee, and we tell you immediately if anything changes.
How Your Lehi Home Addition Project Unfolds
- Free consultation and estimate. We visit your Lehi home, review your lot and goals, and provide an initial estimate. Schedule yours.
- Design and engineering. We design the addition, confirm what Lehi City zoning and setbacks allow for your lot, and bring in structural engineering as needed.
- Permitting. We submit and manage all Lehi City and Utah County permits, including any zoning or ADU-specific approvals your project requires.
- Foundation and framing. We build the new foundation or structural tie-in and frame the addition, with inspections at each stage.
- Systems and finishes. Plumbing, electrical, and HVAC are extended into the new space, followed by insulation, drywall, flooring, and finish carpentry.
- Exterior tie-in and final walkthrough. Siding, roofing, and trim are matched to the existing home, and we review every detail with you before considering the project done. See what past clients say in our reviews.
Frequently Asked Questions
How much does a home addition cost in Lehi, Utah?
A single-room addition such as a primary suite or sunroom typically runs $85,000 to $180,000 in Lehi, depending on size, foundation type, and finish level. A detached ADU generally runs $120,000 to $250,000 or more, and a second-story addition usually runs $150,000 to $350,000 or more. Ironwood provides a complete itemized estimate for your specific project before any work begins.
How long does a home addition take in Lehi?
Most single-room additions take 4 to 6 months from permitting through final walkthrough. Second-story additions and detached ADUs typically take 6 to 9 months. Timelines depend on the scope of structural work, permit and zoning review, and material lead times.
Do I need a permit for a home addition in Lehi, UT?
Yes. Every home addition in Lehi requires permits through Lehi City and Utah County, since additions change the structure and footprint of the home. This typically includes building, electrical, plumbing, and, for ADUs, zoning approval. Ironwood manages the entire permitting process as part of the project.
Does Ironwood Custom Builders build additions throughout Lehi?
Yes. Ironwood builds home additions across Lehi, including Traverse Mountain, Holbrook Farms, the west side, and the historic Main Street core, as well as the surrounding Utah County communities of Highland, Alpine, American Fork, and Saratoga Springs. Call 801-893-7820 or visit our contact page to get started.
