3 Things Every Homeowner Should Know Before Hiring a Contractor

Most contractor horror stories — the unfinished kitchens, the ghost crews, the surprise change orders — are preventable. They almost always trace back to one of three failures at the start of the project.

If you do these three things before signing anything, you eliminate roughly 90% of the risk in any home renovation.

1. Verify the license. It takes 30 seconds.

Every state has a free public contractor license database. Most allow lookup by name, license number, or business address. The information is current within days.

What to verify:

• Active status — not expired, not suspended
• License classification — does it match the work being done? A C-10 electrician should not be doing your foundation
• Disciplinary history — formal complaints, license actions, restitution orders
• Bond status — most states require an active bond
• Workers' compensation insurance — required if the contractor has employees on your jobsite

If a contractor will not give you their license number, that is the answer.

On Bidroom, license verification happens automatically. Every contractor is checked against state boards before they can submit a bid.

2. Never pay more than 10% upfront. In most states it is illegal to demand more.

This one is misunderstood almost universally.

California limits down payments to 10% or $1,000, whichever is less. Most other states have similar caps. Even where there is no statutory limit, a real working contractor with material credit lines does not need to drain your bank account before starting.

The honest payment structure is:

• Deposit: 10% (or your state's legal cap)
• Milestone payments: Tied to specific completion checkpoints (rough-in, drywall, finish, etc.)
• Final payment: Released only on punch-list completion and lien-waiver delivery

If a contractor demands 50% upfront, walk away. They are using your money to finance the previous customer's job. When the music stops, you are the one without a chair.

On Bidroom, every payment runs through Stripe escrow. Funds release only when you approve each milestone. The contractor sees the money is committed; you keep control until the work is done.

3. The lowest bid is almost never the cheapest job.

This is counterintuitive, so we will say it plainly: the lowest bid usually ends up costing the most.

Here is why. Contractors who underbid have to make their margin somewhere. They do it through:

• Aggressive change orders. Every nail pop, every "field condition," every undocumented detail becomes a billable surprise.
• Material substitutions. Spec'd a Kohler fixture? You get a Glacier Bay. Spec'd 5/8" drywall? You get 1/2".
• Rushing. Less time on the jobsite means less labor cost — and more callbacks for sloppy work.
• Cutting corners on prep. The hidden 60% of construction is invisible after paint goes on. That is where the corner-cutting happens.

The smarter heuristic: look for the median bid, not the minimum. Out of three bids, the middle one is usually the realistic one. The lowest is hiding something. The highest is overpriced.

On Bidroom, our AI bid analyzer flags suspiciously low bids and shows you exactly which line items are below market, so you know what is missing before you sign.

One bonus rule

Get a written, signed scope of work — not just a price. We wrote a whole article on why scope of work matters. Skim it before you sign anything.

The bottom line

Renovation is one of the largest financial decisions most people make outside of buying the house itself. Twenty minutes of upfront verification can save you tens of thousands in regret.

Verify the license. Cap the deposit. Pick the median bid.

That is the playbook.