The price for a room addition looked clear at signing. Then the framing went up, and a new line appeared on an invoice, then another, each with its own explanation. For a family that stretched to afford the project in the first place, every surprise lands hard. If you’re helping a sibling in Greenville, South Carolina, one local option is J Pratt Construction South Carolina, which lists home additions among its services.
The fairness question is simple: is the price you agreed to the price you pay? When it isn’t, you’re owed an explanation in writing, and you should know where to take it if the explanation doesn’t hold up. Below, we read a typical addition contract in the order worth reading it, look at the ways prices get set, and cover what to do when the numbers move. Rules differ by state. This is general information, not legal advice.
Which part of an addition contract should you read first?
Read the scope of work first, because every later price question comes back to what it says is included. The fine print isn’t a footnote to the deal. It is the deal. Work through the rest in this order.
Scope of work: read this first
It should describe the new room in specifics: its size, where it joins the house, and which finishes are included. “Addition as discussed” is not a scope. If you expect something to be included and it isn’t named here, assume it isn’t.
Price and payment schedule: read this second
Look for the total, the number of payments, and what must be finished before each one comes due. Payments tied to stages of work protect you better than payments tied to calendar dates. A date arrives whether or not anything got built.
Allowances and exclusions: read this third
An allowance is a placeholder amount for items you haven’t chosen yet, such as flooring or light fixtures. If your choices cost more than the allowance, you pay the difference. Exclusions list what the price does not cover. Both sections are where surprise charges usually begin, so read them slowly.
Permits, inspections and licensed work
An addition touches the structure, the electrical system, the plumbing and often heating and cooling. Those are licensed trades in most places, so the contract should say who does each part, who arranges permits, and who is present for inspections. Ask your local building department what applies. This is no place for do-it-yourself shortcuts, and a good contractor won’t suggest any.
Changes, schedule and warranty: read these last
Check how changes are handled, the expected start and finish dates, and what the contractor will fix after completion and for how long. If a warranty is described only in conversation, ask for it in writing.
How is the price set, and why does it matter?
A price can be fixed for the whole job, built from actual costs plus a markup, or fixed with allowances for items you haven’t chosen, and each one moves the risk to a different person. Know which one you’re signing before you sign it.
| Pricing option | What it involves | When it fits |
|---|---|---|
| Fixed price | One total for a clearly described scope. Changes need a written change order. | When the plans are detailed and you’ve already chosen most of the finishes. |
| Cost plus (time and materials) | You pay actual costs plus an agreed markup or hourly rate, backed by receipts. | When the scope is hard to pin down in advance. Ask for regular cost reports and a point where you both review the total. |
| Fixed price with allowances | A set total, but some items carry placeholder amounts that get finalized later. | When a few choices genuinely aren’t made yet. Ask what each allowance is meant to cover. |
None of these is automatically fair or unfair. The unfair version is the one nobody explained. If the contract uses the word “estimate,” ask whether the final price can rise, and by what process. Get the answer in the document, not in the driveway.
What counts as a change order, and when do you need one?
A change order is a written, signed change to the scope, price or schedule, and you should have one before the changed work begins. Not after. Not “we’ll tally it up at the end.”
If you asked for the change
Moving a window, choosing a different finish, adding a closet: all of these are changes. Ask for the cost and the effect on the schedule in writing, and sign only when you understand both.
If the contractor found something unexpected
Hidden conditions in an older house, such as damaged wood behind a wall, can be real. A fair contractor will show you, explain what it means for the job, and give you the new cost in writing before continuing. You can ask for photos, take a day to think, or get a second opinion from another licensed professional.
If the “change” was already in the original deal
Compare the new charge with the scope of work. If the item was described as included, the first question is why it’s being billed again. Ask for the answer in writing.
Know your rights
- You can ask for the full scope, price and payment schedule in a written contract before work starts.
- You can ask for every change to be written down, priced and signed before the changed work begins.
- You can ask for a copy of everything you sign and a receipt for every payment.
Who can confirm: your state’s consumer protection office, a legal aid office, or a licensed attorney.
What are the red flags in an addition quote?
The biggest red flag is vagueness: anything that leaves the price, the scope or the schedule open to interpretation. Here is the short list.
- A scope written as a sentence or two instead of a description.
- Pressure to sign today, or a “discount” that disappears when you ask for time.
- A request for most of the money before work begins, or for cash only.
- No start date, no finish date and no payment stages.
- Promises made out loud that don’t appear in the paperwork.
- No clear answer on who arranges permits and inspections.
- Reluctance to say whether the contractor is licensed or registered where that’s required, or to let you check.
One flag isn’t proof of bad faith. Two or three together are a reason to pause and get another quote. Comparing quotes is normal, and any contractor who is confident in the paperwork will expect it.
Where can you take a dispute over the final bill?
Start with the contractor, in writing, then move to the state consumer protection office, the licensing board, mediation or a licensed attorney if you aren’t getting answers. Each step has a different job, so use them in order.
Write a short, factual message that lists the charge, why you question it, the contract section you’re relying on, and what you’re asking for. Keep the tone calm and specific. State offices that handle consumer complaints and contractor licensing can tell you what they can and can’t do. Some areas offer free or low-cost mediation, and legal aid offices may help with consumer problems. Before you withhold any payment, talk to a licensed attorney or a legal aid office, because holding back money can create its own problems.
Throughout the project, keep these in one folder:
- The signed contract, every change order and any plans or drawings.
- Receipts or bank records for each payment, matched to the payment schedule.
- Dated photos of the work at each stage, including anything that worries you.
- Emails and texts with the contractor, saved rather than deleted.
- Short notes after each call or visit: the date, who was there and what was agreed.
Take action
Before you sign, read the scope of work out loud with someone you trust, and mark every phrase like “as needed,” “TBD” or “to be selected.” Ask for each one to be replaced with a plain description or a priced allowance. A contract that both sides read the same way protects everyone involved, and it costs nothing to ask for.