What Belongs in Your Building Contract

Here’s something most people building in Idaho don’t know until somebody tells them.

Idaho doesn’t license general contractors. The state requires registration, which means proof of liability insurance, workers’ comp coverage, and a fee. There’s no exam. No education requirement. No experience requirement. Anyone who registers can call themselves a general contractor and build your house.

That isn’t a scandal, and plenty of excellent builders here have never needed a state exam to be good at this. But it does change where your protection comes from. In a state that licenses heavily, the licensing board does some of the screening for you. In Idaho, your contract does it.

So read the contract. Here’s what belongs in one.

This is general guidance, not legal advice.

The short answer

A good building contract defines the scope and the exclusions, ties payments to verified completed work, states every allowance in dollars, spells out a written change order process, names a warranty period, and says what happens when things go wrong. A thin contract hasn’t avoided those conversations. It’s postponed them until you have less leverage.

1. Scope of work, including what’s excluded

The scope tells you what you’re buying. The exclusions tell you what you’re about to be surprised by, and they matter more.

Look for site preparation, foundation, framing, mechanical, electrical, plumbing, insulation, drywall, finishes, and the exterior. Then look for the list of what isn’t included. Landscaping, fencing, window coverings, appliances, outbuildings, and final grading are the usual ones.

If there’s no exclusions list at all, that’s not a contract that includes everything. That’s a conversation nobody has had yet.

2. Payment schedule tied to completed work

Payments should track work that’s finished and verified, not dates on a calendar. A schedule that runs ahead of actual progress puts you in the position of having paid for a house that isn’t there yet, and that’s exactly the position you don’t want to be in if anything goes sideways.

Check that the payment stages line up with your lender’s draw schedule too. When those two documents disagree, your builder ends up floating the difference, which is nobody’s idea of a good start. There’s more on how draws work in how to pay for a custom home.

3. Allowances, in dollars

Every allowance should be a number. Not “quality finishes.” Not “builder-grade or better.” A dollar figure, for flooring, cabinets, countertops, plumbing fixtures, lighting, tile, appliances, and anything else you haven’t picked yet.

Then the contract needs to say what happens when you go over or under. Do overages get billed at cost, at cost plus a markup, or through a formal change order? If you come in under, do you get the difference back or does it stay with the builder? Both are common. You just want to know which one you signed.

This is the single most common place a low bid hides, which is why it gets its own treatment in reading two bids side by side.

4. A written change order process

Changes happen on every build. Some are yours, some are the site’s, some are a discontinued product nobody could have predicted.

The contract should say: how a change gets requested, who prices it, how long pricing takes, who has to sign, and that no change proceeds without written approval. Verbal change orders are how relationships end.

Ask also whether change orders carry a markup and what it is. It’s a normal charge. It just shouldn’t be a surprise.

5. What can move the price, and what can’t

On a fixed price contract, the number should only change for reasons the contract names, and the list should be short and specific. Client-requested changes. Genuine concealed conditions. Code or jurisdictional requirements imposed after signing.

You may also see a material escalation clause, which lets the price move if material costs jump. These became common when lumber was swinging wildly, and they’re still around. A well-drawn one isn’t a loophole. It’s how a builder avoids padding your number against a risk that may never show up.

What matters is how tightly it’s written. A fair one has a meaningful trigger, so the price only moves if a material rises by a substantial percentage rather than by any amount at all. It requires written documentation of the increase rather than letting the builder simply assert it. And it’s specific about which materials it covers.

A clause with a real threshold and a documentation requirement is reasonable, and it protects you as much as the builder. One that passes through any cost increase with no evidence required isn’t really a fixed price. Ask which kind you’re looking at.

6. Timeline, milestones, and what counts as an excusable delay

Estimated start and substantial completion dates, with the major phases in between.

Then the part people skip: which delays extend the schedule without penalty. Weather is the big one here, and in North Idaho it’s genuinely material. A clause that says “weather” without qualification is vague enough to cover a normal February. Better language ties it to conditions beyond the normal range for the season and location.

Also look for whether there are consequences if the timeline slips for reasons that aren’t excusable, and what the notice requirement is when a delay happens.

7. Warranty

What’s covered, for how long, and by whom.

A typical structure is 1 year on workmanship, 2 years on systems, and 10 years on major structural elements, though it varies. The contract should also say how you report an issue, how quickly someone responds, and what’s excluded. Normal settling, homeowner maintenance, and damage from deferred maintenance usually are.

Ask a past client how the warranty period actually went. That’s the answer that matters, and it isn’t in the document.

8. Lien waivers and proof that subs got paid

This one protects you from a genuinely ugly scenario: you pay your builder in full, the builder doesn’t pay a subcontractor, and the subcontractor files a mechanic’s lien against your house. You can end up paying twice.

The contract should require conditional and unconditional lien waivers from subs and suppliers as part of each payment. Ask to see them with each draw. Most lenders require this anyway, which is one of the quieter benefits of building with a construction loan.

9. Insurance, registration, and who carries what

Get the builder’s Idaho registration number and look it up yourself through the Division of Occupational and Professional Licenses. It takes two minutes and confirms the registration is current and the insurance behind it is real.

Then confirm general liability coverage and workers’ compensation, and ask for a certificate of insurance naming you. Also settle who carries builder’s risk insurance during construction, you or the builder. It’s often the owner, and people assume it’s handled when it isn’t.

10. Dispute resolution, termination, and signatures

Dispute resolution. Mediation first, then arbitration or litigation. Note which state’s law governs and where any proceeding happens.

Termination. Under what conditions either side can end the agreement, what notice is required, and how money already spent gets settled. Nobody signs a contract expecting to use this clause. It’s worth reading precisely because of that.

Signatures and date, before work begins. An unsigned contract isn’t a contract, and work that starts before signing tends to be work nobody has agreed on the price of.

Questions to ask before you sign

• What’s excluded from this scope?
• What’s each allowance set at, and what happens if I go over or under?
• Under what specific circumstances can this price change?
• What counts as an excusable weather delay?
• Will I get lien waivers with each payment?
• Who carries builder’s risk insurance?
• What’s the warranty, and how do I make a claim?

The bottom line

A contract isn’t a formality you sign on the way to the fun part. In a state that doesn’t license general contractors, it’s the main document standing between you and a bad outcome, and the time to read it carefully is before you’re emotionally committed to a rendering.

A builder who welcomes hard questions about their contract is telling you something. So is one who doesn’t.

If you’d like us to read a contract you’ve been handed, bring it in. That’s part of a budget review, and we’ll give you a straight read whether or not you build with us.