Most people hire a custom home builder the same way they hire a contractor to redo a bathroom: they get three bids, look at the bottom number, glance at some photos, and pick. That works fine for a bathroom. It does not work for a $2 million to $20 million home that will take 14 to 24 months to build and will involve more than a hundred decisions you have never had to make before.

We have built 400+ homes across Salt Lake, Summit, Wasatch, Utah, and Davis counties. In almost every case where a client came to us after a bad experience with another builder, the problem was visible during the interview — they just did not know which question would have surfaced it. So here are the questions we would ask if we were hiring us. Along with the answers you want to hear, and the answers that should make you keep looking.

1. “Show me the last three homes you finished at my price point — and tell me what each one ended up costing versus the original contract.”

Not the portfolio. The portfolio is the highlight reel. You want the last three completed projects in your budget range, and you want the delta between the signed contract and the final number.

Every custom home changes during construction. That is not a scandal; that is the nature of building something that has never existed before. What matters is the size and the cause of the change. A 3–7% variance driven mostly by owner-requested upgrades is normal and healthy. A 25% variance driven by “unforeseen conditions” and allowance overruns means the original number was never real.

Green flag: A builder who says “here are the three, here’s the variance on each, and here’s exactly what drove it.” Red flag: “Every project is different, it’s hard to say.” It is not hard to say. They have the numbers.

2. “How do you handle allowances — and what happens when I blow through one?”

Allowances are the single largest source of budget pain in custom home building. A builder writes “lighting allowance: $28,000” into a contract because you have not picked fixtures yet. You then pick fixtures that cost $61,000, and now you are $33,000 over and it feels like the builder’s fault.

The real question is whether the allowances in the bid were set at a level that matches the home you actually described. A builder competing on price has a strong incentive to set allowances low, win the job, and let the overruns show up later when you are already committed. We have seen tile allowances in “luxury” bids that would not cover a decent laundry room.

Ask them to walk you through how each allowance number was arrived at, and ask what those same categories actually landed at on their last comparable home. If the answer to the second question is dramatically higher than the number in your bid, you now know what you are looking at.

3. “Who is actually on my site every day, and how many other jobs are they running?”

You are not hiring a logo. You are hiring a superintendent. That person’s competence and bandwidth will determine your build experience more than anything on the company website.

Ask by name. Ask how many concurrent projects that superintendent carries, ask how long they have been with the company, and ask to meet them before you sign anything. A superintendent running six homes at once is a scheduling voicemail, not a project manager. On complex mountain builds, the number should be low, and someone should be on site daily during active phases.

Follow-up worth asking: what happens if that person leaves mid-project? The answer tells you whether the company’s knowledge lives in systems or in one person’s head.

4. “Walk me through your contract type and where your profit comes from.”

Cost-plus, fixed-fee, and fixed-price contracts all have legitimate uses, and each one puts the risk in a different place. What you want is a builder who can explain, without getting defensive, exactly how they make money on your project.

In a cost-plus arrangement, you should be able to see actual subcontractor invoices, and the fee should be clearly stated. In a fixed-price arrangement, you should understand that the builder has priced in contingency — and you should ask what happens to that contingency if it goes unused. There is no wrong answer here, but there is a wrong reaction. Any hesitation to discuss margin openly is a preview of how transparent things will be when a problem costs money.

If you want to sanity-check your own budget before these conversations, our custom home cost calculator gives you a realistic per-square-foot range for the Utah market so you can walk into a builder meeting with a number in your head instead of a hope.

5. “What Utah-specific conditions have you dealt with on lots like mine?”

This is where a lot of out-of-state or out-of-county builders quietly fall apart. Building in Utah is not one skill set — it is several.

• Geological hazard zones. Much of the Wasatch Front bench sits on or near fault traces, landslide-prone slopes, and liquefaction zones. Some lots require a site-specific geotechnical study and a fault setback before you can design anything.
• Slope and access. A Park City or Draper hillside lot can add six figures in excavation, retaining, and shoring before a single wall goes up.
• Winter. At 7,000 feet, your foundation window and your framing window are real constraints. A builder who schedules a Summit County foundation pour in the wrong month costs you a season.
• Jurisdiction differences. Park City, Summit County, Wasatch County, Draper, and Salt Lake County all review differently, with different timelines and different design review layers. HOA-level design review in communities like Promontory or Tuhaye adds another approval track entirely.

Ask for a specific story, not a general claim of experience. “We’ve built all over Utah” means nothing. “Here’s the retaining and drainage solution we engineered on a 30% slope in Emigration Canyon, and here’s what it added” means everything.

6. “How and when will I hear from you — and what does that look like when something goes wrong?”

Communication is the number-one complaint in residential construction, and it is almost never about a builder being unwilling to talk. It is about there being no system, so updates happen when the client chases them.

Ask what the standing cadence is: weekly written update? Site walk every other Friday? A client portal with photos, selections, schedule, and running budget? Then ask the harder version: when a subcontractor makes a mistake that costs money, who tells you, how fast, and what does the fix approval process look like?

The builders worth hiring have a rehearsed answer to that question, because bad news is a routine part of the job and they have decided how to handle it.

7. “What does your schedule actually assume?”

Anyone can say “about 14 months.” Ask what that number assumes: how many weeks for permitting in your specific jurisdiction, how long for design and engineering, when material long-leads get ordered, how much float is built in.

Windows, specialty appliances, custom steel, and certain stone packages can carry lead times measured in months. A schedule that does not name those items and their order dates is a guess dressed up as a plan.

8. “Who are your subs, how long have you used them, and how do they get paid?”

Your home is built by 10 to 30 specialized trade crews. The builder’s real value is assembling and sequencing those crews. Long-standing sub relationships mean the builder gets priority scheduling, better pricing, and crews who care about their reputation with that builder.

Also ask about lien waivers and payment verification. You want to know that subs are actually being paid out of your draws — a mechanic’s lien on a home you have already paid for is a genuinely awful problem to inherit.

9. “What’s your warranty, and what did you actually go back and fix on last year’s homes?”

Every builder has a warranty document. Fewer have a warranty practice. Ask for a couple of examples of callbacks they handled in the last 12 months and how long the fix took. Then ask a past client the same question. The gap between those two answers is the most honest data you will get in this entire process.

10. “Can I talk to a client whose project went badly?”

This is the question almost nobody asks, and it is the most revealing one. Every builder with real volume has had at least one difficult project — a client relationship that soured, a scope that spiraled, a mistake that cost real money.

A builder who says “no, all our clients were thrilled” is either very new or not being straight with you. A builder who says “yes — call this person, it was a hard project, here’s what happened and here’s what we changed afterward” is showing you the thing you actually need to know: how they behave when it is not going well.

Questions that matter less than you think

A few things clients tend to over-weight:

• Total number of homes built. Relevant, but only in your price band and your terrain. A builder with 200 valley-floor tract-adjacent homes is not automatically ready for a Wasatch County hillside.
• Award counts. Nice. Not predictive of your experience.
• The lowest bid. The lowest bid on a custom home is usually just the most optimistic set of assumptions. It converges with the others by month nine — except now you are stuck.

How to run the interview

Talk to three builders. Ask all of them the same questions, in the same order, and take notes in the room. You are not just collecting answers — you are watching how each one handles being asked something specific and uncomfortable.

Then do two things most people skip. Call at least two past clients and ask about the last 20% of the project, when momentum is gone and punch-list items pile up. And visit an active job site unannounced-ish. A clean, organized, safe site with crews who know who the superintendent is tells you more than any brochure.

Building a custom home is the largest and longest transaction most families ever go through. The interview is the one moment where you have all the leverage. Spend it on hard questions.

If you want to run these questions past us, reach out to our team — we would rather answer twenty specific questions now than discover a mismatch in month six.