You finally have a proposal in hand. Maybe you’ve got three of them, all for the same addition or kitchen renovation, and they’re nowhere close to each other in price.
Here’s the problem: most homeowners don’t know what they’re actually looking at. The contractor knows what’s in that document. You might not. And that information gap is exactly where expensive surprises are born.
This guide walks you through how to read a GC proposal the way a contractor reads it — so you know what to confirm, what to question, and what a missing section actually means before you sign anything.
Time required: 30–45 minutes per proposal
Difficulty: Moderate — no construction experience needed, but attention to detail matters
Before you start: Have all proposals in front of you at the same time if you’re comparing bids
Before You Start: Know What You’re Looking At
A proposal is not the same as an estimate. An estimate is a rough ballpark — it tells you about what something might cost. A proposal is a detailed document that becomes the legal basis for your contract once you sign it.
The word “proposal” gets used loosely in the trades, but a proper GC proposal should include the scope of work, materials, exclusions, payment schedule, timeline, and terms. If any of those pieces are missing, that’s not a finished proposal — it’s an estimate with a signature line.
Step 1: Confirm the Basics Are There
Before you read a single line of scope, scan the proposal for these items. If any are absent, the document isn’t complete enough to evaluate seriously.
Check for:
- Your name and address (and the property address if different)
- The contractor’s full legal business name, not just a logo
- The contractor’s license number
- Certificate of insurance or a statement that documentation is available on request
- A project start date (even if approximate) and an estimated completion timeframe
- A signature line for both parties
What success looks like at this step: You can confirm the contractor is licensed and insured before you read a single dollar amount. If the license number isn’t there, ask for it in writing and verify it at njconsumeraffairs.gov before proceeding.
Step 2: Read the Scope of Work Like a Skeptic
The scope of work is the heart of the proposal. This section should tell you exactly what the contractor will do — room by room, trade by trade, phase by phase.
Read every line twice and ask yourself: Is this specific enough that two different people would interpret it the same way?
Vague language to flag:
- “Demo as needed” — needed by whose judgment?
- “Supply and install flooring” — what flooring? Who supplies it, the contractor or you?
- “Electrical updates” — what updates? How many circuits? What panel work?
- “Clean up job site” — when? Does this include haul-away and dumpster costs?
Specific language you want to see:
- Material names, grades, or brands where relevant (“Andersen 400 Series windows”)
- Square footage for tile, flooring, or drywall work
- Named subcontractors for specialty trades (plumbing, electrical, HVAC) or confirmation the GC is coordinating and responsible for their work
- Permit-pulling spelled out clearly — who pulls permits, and is that cost included?
What success looks like at this step: You can describe the finished project to someone else using only the scope of work, without needing to interpret or assume anything. If you can’t do that, the scope isn’t tight enough.
Step 3: Find the Exclusions List
A good proposal tells you what’s included. A great proposal also tells you what isn’t. That exclusions section is worth reading as carefully as the scope of work — sometimes more carefully.
Common items that get excluded (and that homeowners assume are included):
- Permit fees (often a separate line item or excluded entirely)
- Dumpster and debris removal
- Painting or priming after drywall work
- Appliances, fixtures, or finish materials (contractor installs, but you supply)
- Landscaping or exterior grading after foundation work
- Asbestos testing or remediation if the home is older
If there’s no exclusions section at all: That’s a red flag. Either the contractor hasn’t thought through what they’re not responsible for, or they’ve intentionally left it vague. Ask directly: “Can you add a section listing what’s not included in this proposal?”
What success looks like at this step: You can name at least three things this contractor is not responsible for under this proposal.
Step 4: Check the Payment Schedule
The payment schedule tells you when and how much money moves during the project. It’s also one of the clearest signals of how a contractor manages cash flow.
A standard residential GC payment structure has three to five milestones:
- Deposit at contract signing (typically 10–30% depending on project size)
- Draw at framing completion or rough-ins
- Draw at drywall or milestone midpoint
- Draw at substantial completion
- Final payment at punch list sign-off
What to watch for:
- Oversized deposits: A deposit over 30–33% on a major project is a risk flag. It’s not necessarily disqualifying, but ask why.
- No final payment holdback: If 100% is due before punch list, you lose leverage to get final items completed. There should always be a meaningful balance due at completion.
- Lump sum payments tied to calendar dates instead of milestones: You want to pay for work that’s been done, not work that’s scheduled.
What success looks like at this step: Every payment tranche is tied to a specific completion event, and there’s a final balance that stays in your pocket until you sign off on the finished work.
Step 5: Read the Change Order Language
Something will change on your project. Materials get backordered. You decide you want different tile. A wall opens up and reveals plumbing that needs to be relocated. Change orders are how those scope adjustments get documented and priced.
The proposal should spell out: How are change orders initiated? Who approves them? Do they require written sign-off before work begins? How is pricing determined for added scope?
What good change order language looks like:
- Changes require a written change order signed by both parties before work starts
- Pricing for added scope is based on a stated method (time and materials, or a markup on direct costs)
- No work outside the original scope begins without a signed change order
What to ask if you don’t see this: “What’s your process if we want to change something mid-project, and how does that affect pricing and timeline?”
What success looks like at this step: You understand exactly what you’d have to do — and what it would cost — to make a change once the project is underway.df
Step 6: Check the Timeline Section for Realistic Detail
Most proposals include a project timeline. Some of them mean it. Look for specificity.
A vague timeline says: “Project duration: 8–12 weeks.”
A useful timeline says: “Demolition: Week 1. Framing and rough-ins: Weeks 2–4. Inspections: Week 5. Drywall, electrical trim, tile: Weeks 6–9. Finish work and punch list: Weeks 10–11.”
Also look for what the timeline section doesn’t say. It should acknowledge that:
- Permit and municipal approval timelines are outside the contractor’s control
- Owner decisions on materials (tile selections, fixture choices, finish options) affect the schedule — delays in selecting materials create schedule delays
- Some phases may require temporary access restrictions or, in the case of large additions, brief periods where living in the home is impractical
If the timeline is a single line with no caveats, the contractor either hasn’t thought it through or doesn’t want to commit to detail. Neither is a good sign.
What success looks like at this step: The timeline gives you a week-by-week picture of the project, and it’s honest about what’s outside the contractor’s control.
Step 7: Verify the Warranty Language
Before you sign, know what happens if something goes wrong after the contractor leaves.
Look for:
- A workmanship warranty (typically 1–2 years for residential GC work in New Jersey)
- Material warranty pass-through — for manufacturer-warranted products like roofing, windows, or appliances, confirm the warranty transfers to you
- What the process is if you need warranty work: who to contact, what triggers a response, what’s excluded
What to watch for: Warranties that expire before the project ends, or language that voids the warranty if you make any modification to the finished work.
What success looks like at this step: You can name the warranty period for labor and you know how to use it.
Comparing Multiple Proposals: The One Rule
If you have more than one proposal, the temptation is to sort them by price. Resist it.
Sort them by scope first. Line up what each proposal includes and excludes. The $45,000 proposal might be $7,000 cheaper than the $52,000 proposal because it excludes permit fees, haul-away, and three categories of finish work that you assumed were standard.
Two proposals are only comparable if they cover the same scope. If you can’t determine that from what you’ve been given, ask each contractor to clarify before you make a decision.
Common Mistakes Homeowners Make When Reading Proposals
Watch out for choosing on price before verifying scope. The lowest bid is often the lowest because of what’s missing, not because the contractor is more efficient. Confirm equal scope before comparing numbers.
Watch out for skipping the exclusions section. What’s not in the proposal is at least as important as what is. Experienced GCs write detailed exclusions specifically so there are no disputes later.
Watch out for signing before the license is confirmed. Licensing is public record in New Jersey. A two-minute check at njconsumeraffairs.gov tells you whether the contractor is currently licensed and in good standing. Never skip this step.
Watch out for proposals with no change order process. If scope changes aren’t documented, disagreements about who owes what become unavoidable. A good GC wants everything in writing as much as you do.
Watch out for assuming “we can work that out” on critical details. If a detail matters to you — specific materials, a phasing decision, a timeline milestone — it needs to be in the document. A verbal agreement is worth nothing once a dispute starts.
Next Steps
If you’ve worked through this checklist and your proposals still have gaps, go back to each contractor with specific questions. Any reputable GC will welcome the detail — it means you’re a serious homeowner who will make decisions promptly and communicate clearly. That’s exactly the kind of client a good contractor wants.
When you find a proposal that holds up to every step in this guide — specific scope, clear exclusions, milestone-based payments, documented change order process, honest timeline, solid warranty — that’s a document you can sign with confidence.
If you’re getting quotes for a home addition or major renovation in Northern New Jersey and want to see what a detailed, itemized proposal looks like in practice, Temprano Construction offers free estimates. Ray Temprano has built his entire proposal process around making sure there are no surprises for the homeowner — and no ambiguity about what’s included, what isn’t, and what happens if anything needs to change.
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Last updated: May 2026. This guide reflects general residential construction practice in New Jersey. Always verify contractor license status at njconsumeraffairs.gov before signing any agreement.
