Founder — Design Your Price / TH Builds LLC
Tanner Durfee founded Design Your Price / TH Builds LLC to bring engineering discipline to the second story addition market in Utah County. His approach is simple: give homeowners a clear, data-grounded picture of what their project will cost and look like — before they commit to anything.
He has a civil engineering degree and comes from a multi-generational contractor family. That background means he's as comfortable reviewing structural engineering reports as he is talking with homeowners about their project goals. He's completed second story additions across Provo, Orem, Lehi, American Fork, and surrounding Utah County communities.
Tanner started Design Your Price with a simple observation: Utah County's growth has made moving increasingly expensive. Transaction costs — realtor fees, closing costs, moving — easily run $30,000–$50,000 on a typical Utah County home sale. For many families, adding a second story is genuinely the cheaper option.
Second story work is technically demanding. You have to preserve the existing structure while building above it, manage weatherproofing throughout, and make sure the addition matches the original architecture. That's harder than new construction — but it's also what Tanner finds most satisfying.
"A second story addition should look like it was always part of the original home," he says. "Our job is to make it invisible from the street." That standard applies to every project, regardless of budget.
Tanner's engineering degree means he reads structural assessments carefully and catches issues before they become expensive problems. Foundation concerns, load calculations, soil conditions — he's reviewed all of it before quoting a project.
With a 10-person crew, we have the bandwidth to move from concept to construction efficiently. We're not subcontracting out every trade — our team handles the critical phases in-house, which means better quality control and fewer scheduling delays.
Architecture, structural engineering, Utah County and city permits — we manage all of it. You don't call the city once. We coordinate everything and keep you posted on timelines throughout the process.
We weatherproof the new floor before removing the old roof. You maintain access to your kitchen and bathrooms throughout. Utah's dry climate actually helps — we're not dealing with high humidity and rain delays like some markets.
Design Your Price works across Utah County and the southern Wasatch Front. Every project includes a zoning and HOA review of the specific address and neighborhood.
Second story additions completed and in progress throughout Provo and surrounding Utah County.
Second story additions completed and in progress throughout Orem and surrounding Utah County.
Second story additions completed and in progress throughout Lehi and surrounding Utah County.
Second story additions completed and in progress throughout American Fork and surrounding Utah County.
Second story additions completed and in progress throughout Saratoga Springs and surrounding Utah County.
Second story additions completed and in progress throughout Pleasant Grove and surrounding Utah County.
Get a free AI preview of your home, or reach out to Tanner directly. Either way, you get a real conversation — not a sales pitch.