Questions to Ask Builders
A set of questions to put to every builder you are considering, so the answers can be compared side by side. They cover how each one prices the same scope, who supervises the site, how change orders and delays are handled, and what happens after handover. Written for a homeowner interviewing two or three candidates for the same job.
The questions
Open any question for the note
How many jobs like this one have you finished in the last two years?
Why ask it
Asking every builder the same way makes the answers comparable, which a general question about experience does not. A builder who has done four of your job in two years prices it from records, while one who has done none prices it from optimism.
Can I see two recent projects and talk to those homeowners?
Why ask it
The useful reference is the one the builder did not curate. Ask each homeowner what the final number was against the original bid, since that single figure separates builders more reliably than photographs do.
Can you show me a project you finished three or more years ago?
Why ask it
Anything looks good at handover. Older work is where you see whether trim joints opened, grout cracked or the addition roof still ties in cleanly, and a builder with nothing older to show you may not have been in business long.
Is this bid a fixed price or cost plus, and what is the markup?
Why ask it
Bids in different structures cannot be compared as numbers at all. Establish which each builder is offering before you look at totals, or you will pick the cost plus bid thinking it is cheaper.
Can you break the bid out by trade rather than giving me one total?
Why ask it
Line items are the only way to find out why one bid is thirty thousand lower. Usually it is a smaller allowance or a missing scope, and the breakdown makes that visible in a few minutes.
Which line items are allowances, and what figure did you use?
Why ask it
Two builders can bid the same kitchen and differ mostly in their tile and fixture allowances. Normalise the allowances to the same numbers before comparing, or the lowest bid is just the one that assumed you have cheap taste.
What is not included in this price?
Why ask it
Permits, dumpsters, temporary power, final paint, landscape repair and appliance hookup show up in some bids and not others. Reading the exclusion lists side by side is usually the fastest way to explain a price gap.
Who will supervise the site day to day, and how many other jobs will that person be running?
Why ask it
Attention is the resource you are actually buying. A lead running your job plus four others will not be there most days, and that shows up as small mistakes nobody caught in time.
Are the trades your own crew, long-standing subs, or bid out for each job?
Why ask it
Builders who use the same electrician and framer for years get better work and better scheduling priority. Ones who rebid every trade each job get lower prices and less loyalty when a callback is needed.
What is the schedule, and which items are on the critical path?
Why ask it
A builder who can name the sequencing constraint, plan review, a long-lead window order, an inspection that gates the next trade, has thought about your job specifically. A duration with no critical path behind it is a guess.
What could realistically push this past your completion date?
Why ask it
The specific risks named tell you how carefully each builder has looked at your house. Compare the lists: a builder who mentions something the others missed has usually been on site more closely.
How do you handle change orders, and do I approve the price before work starts?
Why ask it
The difference between written pre-approval and billing after the fact is the difference between a budget and a running tab. Ask whether a fee applies per change and how many days each one typically adds.
What contingency should I hold for this job, and for what specifically?
Why ask it
A builder who says none is either very confident or has not opened a wall like yours before. A specific answer, such as fifteen percent because the framing behind the shower is likely wet, is worth more than a general percentage.
What is your payment schedule, and what has to be complete before each payment?
Why ask it
Payments tied to finished stages protect you far better than monthly billing, and comparing deposit amounts across builders tells you which one is short on working capital.
Do you collect lien waivers from subs and suppliers as they get paid?
Why ask it
Without waivers an unpaid sub can lien your house after you paid the builder in full. A builder who handles this routinely will answer immediately, and one who hesitates has not been asked before.
How do you handle permits and inspections on a job like this?
Why ask it
Listen for who pulls the permit and in whose name. If any builder suggests the work could go unpermitted, the code liability lands on your title, and it will surface when you sell or file a claim.
How will you protect the rest of my house and keep the neighbors comfortable?
Why ask it
Dust walls, floor protection, where the dumpster and portable toilet go, and start times decide what living through the job feels like. Builders vary enormously here and almost never bring it up unprompted.
What documentation do I get at handover?
Why ask it
As-built drawings, permit sign-offs, appliance manuals, paint colors, sub contact details and warranty paperwork are easy to collect during the job and nearly impossible to reassemble later.
What does your warranty cover, and how quickly do you come back for a callback?
Why ask it
Ask each builder for a callback time in days rather than a warranty length in years. The reference homeowners you call can verify the answer, which is the only part of the warranty you can actually check.
Tell me about a job that went wrong and what you changed afterwards.
Why ask it
The answers separate builders sharply. Some name a real failure and a specific process change, some blame a client or a sub, and some claim it has never happened, which in construction is not a credible answer.
Comparing Builders Fairly
Practical guidance for the conversation itself
Make the Bids Comparable First
Give every builder identical paperwork
The same drawings, the same written scope, the same fixture list. If each builder is bidding their own interpretation of your project, the totals are three different questions with three different answers.
Set the allowances yourself
Tell every builder to use the same figures for tile, lighting, plumbing fixtures and countertops. Otherwise the cheapest bid is simply the one that assumed the cheapest finishes.
Ask for a common exclusion list
Name the items you want explicitly priced or explicitly excluded: permits, dumpster, temporary power, final clean, landscape repair. This removes the most common reason bids differ for no real reason.
Do not share the numbers between builders
Once a builder knows the figure to beat, you learn what they are willing to charge rather than what the job costs. Ask each to price it honestly and tell them you will not be running a second round.
Reading the Bids Side by Side
- Lay the line items out in a spreadsheet by trade. The gaps show up instantly and are almost always in scope, not efficiency.
- Add each builder's allowances back at your own numbers before comparing totals.
- Note the deposit percentage and the payment trigger for each. This is often the clearest signal of a builder's financial health.
- Compare the named schedule risks. The builder who spotted something the others missed has usually looked at your house more carefully.
- Treat a bid that is far below the others as a question rather than a bargain. Find the missing scope before you decide it is a saving.
Where This Process Goes Wrong
Choosing on total price
The number on the front page is the least reliable part of a bid, because it depends entirely on assumptions you have not read yet. The line items and the exclusions are where the real comparison lives.
Interviewing only two builders
With two bids you have no way to know which is the outlier. Three gives you a middle, and the reasoning behind the odd one out is usually the most useful thing you learn.
Skipping the reference calls
Reference calls are tedious and are the single highest-value hour in the process. Ask specifically about the final number versus the bid, and about how the builder behaved when something went wrong.
Letting a good conversation substitute for a contract
Rapport in a walkthrough is not scope, schedule or price. Everything you liked about a builder's answers needs to appear in the contract, or you agreed to it with someone who will not be on site.
Before You Sign With the One You Chose
- 1Verify the license number with the state or county board and confirm it is current.
- 2Have the insurer send certificates for liability and workers compensation, with dates covering your entire schedule.
- 3Search local court records for liens and construction suits against both the business and the owner's name.
- 4Read the change order, delay and substitution clauses in the contract before signing, since those three cause most disputes.
- 5Ask that the drawings be named in the contract by revision number and date, so there is no argument later about which set you agreed to.