The 7 Things Your Renovation Contract Should Always Include

A renovation contract should always include: a detailed scope of work, a payment schedule tied to milestones, a project timeline with key dates, a change order process, materials and specifications, permit responsibility, and warranty terms. Missing any of these creates openings for cost overruns, delays, and disputes that are nearly impossible to resolve once work has started.

Too many homeowners spend more time researching a refrigerator than reading the contract they’re about to sign for a $75,000 renovation. And we get it – you’re going to look at that fridge every day for the next decade, but all the work besides the finishes is out-of-sight, out-of-mind. Additionally, a contractor agreement looks official. It has numbers and signatures and legalese. The assumption is that the contractor had a lawyer prepare it, so it must cover what needs to be covered.

It often doesn’t.

So what should be in a renovation contract?

A contract can be two pages or twenty. Length means nothing. What’s in it — and what’s missing — is everything. Below are the seven things that should appear in every residential renovation contract, what each one means in plain English, and what a contractor is able to get away with when any of them is absent or vague.

The scope of work is a written description of every task the contractor is being paid to perform — specific enough that there’s no room to argue about what was included.

Vague scope is the most common source of renovation disputes. “Kitchen renovation” is not scope. “Update the bathroom” is not scope. Those are categories. Scope looks like this: demolition of existing upper and lower cabinets, installation of 22 linear feet of new shaker-style upper and lower cabinets, replacement of laminate countertop with quartz, installation of undermount sink model [X].

Every task named. Every material identified. Every area of the home accounted for.

Without it, two things happen. First, scope creep — work the homeowner assumed was included gets billed as an extra. Second, work exclusions — the contractor claims after the fact that a specific task was never part of the agreement. Both are much easier to do when the contract is thin on detail.

⚠️  Watch for:  “As discussed,” “per plans TBD,” or allowances listed without defined dollar amounts. Any of these is a placeholder where a dispute is waiting to happen.

A payment schedule ties each payment to a completed milestone — full stop. Payments are not tied to a calendar date, not to material deliveries, and most definitely not to the contractor’s cash flow needs.

A reasonable structure: a deposit at signing in the range of 30 to 50 percent, depending on the scope, with progress payments at defined project milestones (framing complete, rough-in complete, and so on), and a final payment held until the punch list is signed off. That final holdback is your last point of leverage. Once it’s gone, so is most of your ability to compel completion.

What we mean when we say the range of the deposit depends on the scope: the bigger the project gets, the smaller the percentage of the project the deposit should be. For projects like kitchen remodels with lots of cabinetry (ie a lot of materials that need to be purchased before the work starts), a larger deposit in the 50-60% range is reasonable. After the initial deposit, homeowners should see a decent amount of work done before providing a draw request.

Front-loading — collecting a large portion of the contract early, before significant work is done — is the pattern to watch for. A homeowner who has paid 70 percent or more of the contract before walls are closed has very little left to negotiate with if the project stalls or the quality falls short.

Deposits are normal. Disproportionate deposits are a warning sign. The difference matters.

⚠️  Watch for:  Deposits above 30–35%, payment due “at start of each phase” without a specific definition of what completion of a phase looks like, or no holdback specified at project end.

“We’ll start in the spring” is not a start date. “Work will commence on March 17th” is. The difference between those two phrases is the difference between a schedule and a suggestion.

Your contract should include a start date, a substantial completion date, and defined milestones in between. Milestones matter because they create checkpoints. If framing isn’t complete by week four, you have a documented delay — and it won’t be a surprise at week twelve when the project is still in rough-in and your temporary living situation has run out.

Contractors manage multiple jobs at once. Without a contractual timeline, there’s no obligation to prioritize yours. Schedule drift — where weeks quietly compound into months — is almost always downstream of a contract that treated the timeline as approximate.

Also look for language that addresses what happens when the timeline isn’t met. Excused delays (severe weather, material lead times outside anyone’s control) are reasonable. Open-ended extensions without clear communication and a process to follow are not.

✓  What to look for:  A specific start date, a substantial completion date, three to five interim milestones, and language distinguishing excused delays from contractor-caused schedule slippage.

A change order is a written amendment to the original contract that documents any change to the project’s scope, cost, or timeline — signed by both parties before the work happens.

That last part is the critical piece. Before the work happens. Not after. The change order process should require a written description of the change, the revised cost, the timeline impact, and sign-off from both the contractor and the homeowner. All of it in writing, all of it agreed to, before anyone lifts a finger.

Here’s how it goes wrong without one. The homeowner, mid-project, mentions to the contractor: “While you’re in there, can you also add an outlet on that wall?” The contractor does it. It shows up on the final invoice at $400. The homeowner thinks it should be $150. There’s no signed change order. There’s no agreed price. There is, however, a finished wall. The homeowner has no recourse.

Verbal change orders are nearly impossible to dispute after the fact. The contract should make clear they aren’t valid.

⚠️  Watch for:  No change order clause at all, or language permitting the contractor to proceed on “owner’s verbal approval.” Both leave you exposed.

“Builder grade” is not a specification. Neither is “similar to” or “or equivalent.” These phrases give a contractor the latitude to install whatever is cheapest and available, pocket the difference between that and what you thought you were getting, and point to the contract when you object.

The contract should name specific materials — brand, model, grade, color, finish. Where that level of specificity isn’t possible at signing (tile selections, fixture choices, appliances), allowances should be used. But every allowance needs a dollar amount attached to it, and the contract should spell out what happens when your selection exceeds the allowance.

Material substitution happens most often with things that are hard to see once installed: insulation, plumbing rough-in materials, sub-flooring, roofing felt, window ratings. By the time you notice, the job is done and the original materials are gone.

⚠️  Watch for:  “Or equivalent,” “as available,” “per contractor’s discretion,” or allowances listed as line items with no dollar amounts attached.

The contract should state clearly who is responsible for obtaining required permits and who pays for them. In most cases, that should be the contractor.

Contractors know what their scope requires in terms of permits. They have working relationships with local building departments. The work is being performed under their license. Permits and the inspections that come with them are the one independent check on work quality that exists — a set of eyes that doesn’t work for the contractor or the homeowner.

Unpermitted work has downstream consequences that outlast the project: complications with homeowner’s insurance, problems at resale, and in some cases, orders to open walls and redo work that didn’t pass inspection the first time (or never faced one). A contractor who wants to skip permits isn’t saving you money. They’re shifting risk onto you.

“Homeowner to obtain all permits” in a contract is a red flag. It almost always means the contractor wants to avoid the scrutiny that comes with them.

Every renovation contract should include a warranty on the contractor’s labor — separate from any manufacturer warranties on the materials they installed.

Here’s the difference: the manufacturer’s warranty covers a defective product. A contractor’s warranty covers defective installation of a product that worked fine. If your new tile starts cracking six months after the job is done because it was set on an inadequate substrate, that’s an installation failure. The manufacturer warranty won’t cover it. Without a labor warranty, neither will your contractor.

A reasonable labor warranty is one year minimum on workmanship. Some contractors offer longer coverage on specific scopes — roofing, waterproofing, and structural work often carry extended terms. The contract should name the duration, define what’s covered, describe how to submit a warranty claim, and list any exclusions.

A contractor who disappears after final payment was always planning to. A written warranty creates a documented obligation to come back and fix what failed.

✓  What to look for:  Warranty duration (minimum one year on labor), scope of coverage, claim process, and exclusions. Red flags: no warranty clause, “warranty per manufacturer only,” or a warranty that voids on any post-completion modification.

A complete contract doesn’t guarantee a perfect renovation. But a vague one almost guarantees problems — because it removes accountability before a single wall comes down. These seven items aren’t legal technicalities. They’re the basic structure that makes a contractor answerable to what they agreed to do.

Most homeowners don’t know what to look for until something goes wrong. That’s what this list is for.

If you’re heading into a renovation and want someone to review your contract before you’re locked in — or if you want to understand exactly what you should be asking for — that’s what Purple Door is here for. Bring your contract. We’ll tell you what’s there, what’s missing, and what it means.

Book a free consultation with us — and walk in knowing exactly what questions to ask.