Choosing a contractor is the single decision that determines how your renovation goes. Not the tile. Not the paint colour. The contractor.
And most homeowners choose badly — not because they’re careless, but because they compare the only number that’s easy to compare: the price at the bottom of the estimate. Three quotes arrive, one is cheaper, that one wins.
The problem is that a renovation estimate isn’t a product with a fixed spec. Two contractors can quote “bathroom remodel” and mean genuinely different jobs — one including a waterproofing membrane, proper venting and new valves, the other planning to tile over what’s already there and hope.
Here are the questions that tell you which one you’re talking to.
1. What exactly is in the price — line by line?
Ask for an itemised scope, not a lump sum. A real estimate lists demolition, materials, labour, disposal, and the specific fixtures and finishes assumed.
A single number with no breakdown isn’t a quote — it’s a guess you can’t audit. And when the job runs long, you’ll have no reference point to argue from.
2. What is not included?
This is the more revealing version of the same question. Good contractors answer it immediately, because they’ve been burned by the ambiguity too.
Common exclusions worth confirming: permits, dumpster fees, plumbing that turns out to be corroded, electrical brought up to code, painting, and fixture supply. Any of these can move a project by thousands.
3. Who is actually doing the work?
Ask whether the crew that quotes the job is the crew that builds it. In a lot of the industry, the person who walks your home is a salesperson, and the work is handed to whichever subcontractor is available that week.
That’s not automatically bad — but you should know, because it changes who is accountable when something goes wrong at 3pm on a Thursday.
4. How do you handle waterproofing?
If any part of your project involves water — a shower, a tub surround, a basement, a patio against the foundation — this question separates professionals from the rest.
Tile and grout are not waterproof. A shower stays dry because of a continuous membrane behind the tile. If a contractor can’t describe their system in specific terms, that’s your answer. We go into more detail on our bathroom renovation page.
5. Can I see work you’ve completed — including the parts I won’t see later?
Finished photos are easy. Ask for in-progress photos too: substrate prep, framing, waterproofing, rough-in.
Contractors who do the invisible work properly tend to be proud of it and happy to show you. Contractors who don’t will only ever show you the after.
6. What’s the schedule, and what happens if it slips?
You want a realistic week-by-week plan, not a single end date. Ask specifically when materials need to be selected and ordered — countertop fabrication and custom glass routinely add one to two weeks that homeowners don’t plan for.
Also ask what happens when a delay is on their side versus yours. A contractor who has thought about this will tell you plainly.
7. Are you licensed and insured — and can I see the documents?
Ask every contractor, including the one your neighbour recommends. Request current certificates rather than a verbal yes.
If someone is working uninsured on your property and gets hurt, that can become your problem. This is not a rude question; it’s a normal one.
8. How are changes priced?
Mid-project changes are close to inevitable — you open a wall and find something, or you change your mind about the vanity.
What matters is the process. Are changes documented and priced before the work happens, or do they surface on the final invoice? Insist on the former, in writing.
9. What does the payment schedule look like?
A reasonable schedule ties payments to milestones — deposit, rough-in complete, substantial completion, final on punch-list sign-off.
Be cautious of anyone asking for most of the money upfront. A contractor with a working business does not need your full budget before demolition starts.
The cheapest quote is rarely the cheapest job
When one estimate is dramatically lower than the others, it almost always means one of three things: something is missing from the scope, cheaper materials are assumed, or a step is being skipped.
Occasionally it means someone is genuinely hungry for the work — that happens. But it’s worth finding out which before you sign, because a job that has to be redone costs far more than the difference you saved.
A note on trusting your read of someone
Beyond the checklist: pay attention to whether a contractor is willing to tell you something you don’t want to hear.
The ones worth hiring will talk you out of things. They’ll tell you the layout you want isn’t possible without moving a drain, or that the timeline you’re hoping for isn’t realistic in April. That willingness to give you an inconvenient answer during the sales conversation is the best available predictor of how they’ll behave once the walls are open.
Planning a project on Long Island? We give free, written, itemised estimates across Nassau and Suffolk — and we’re happy to answer every question on this list. Request an estimate or call us at (347) 531-5690.
