How to Write a Construction Estimate (Free Template)
A good estimate does two jobs at once: it wins you the work, and it protects your profit while you do it. A vague number scribbled on the back of a card does neither. Here’s how to write a construction estimate that looks professional, covers your costs, and leaves no room for “but I thought that was included.”
What a construction estimate must include
Every estimate — whether you’re a GC, a handyman, or a specialty trade — should have these parts:
- Your business details — name, contact, license number, and logo if you have one.
- Client and job info — client name, job site address, and the date the estimate expires (30 days is common).
- Scope of work — a clear description of exactly what you will do. This is the single most important section (see below).
- Line items — materials, labor, equipment, and subcontractor costs, broken out.
- Subtotal, tax, and total.
- Terms — deposit required, payment schedule, and what happens with changes.
- Exclusions — what is not included. This prevents the most common disputes.
Price it in the right order
Build your number from the ground up so nothing gets missed:
- Materials. List quantities and unit prices. Add a waste factor (typically 5–10%) so you’re not eating the offcuts.
- Labor. Estimate hours honestly, then multiply by your fully-burdened labor rate — not just the wage. Burdened rate includes payroll taxes, insurance, and non-billable time.
- Equipment & subs. Rentals, dump fees, and any subcontractor quotes.
- Overhead. Your business has fixed costs (truck, insurance, phone, software). Spread them across jobs — often 10–20% on top of direct costs.
- Profit. Add your margin last, as a percentage of the total. Overhead keeps the lights on; profit is what the business earns. They are not the same thing.
Write a scope that protects you
Most job disputes aren’t about price — they’re about expectations. Be specific:
- Say what’s included and what’s excluded (“includes drywall repair; excludes paint”).
- Note who supplies what (owner-supplied fixtures vs. contractor-supplied).
- Spell out how change orders work: any change to the scope is priced and approved in writing before the work happens.
That one paragraph on change orders saves more margin than almost anything else you’ll write.
Estimate, then invoice — without retyping
The estimate you send should flow straight into the invoice you bill, and into a record of what the job actually cost versus what you quoted. Re-typing it three times is where errors (and lost money) creep in.
The Contractor Estimate, Invoice & Job Tracker connects all three: build the estimate, turn it into an invoice with one step, and track profit on every job in one workbook — so your quote, your bill, and your actual margin always match. Google Sheets and Excel.
Keep reading: Estimate vs Quote vs Bid: What Contractors Should Send.
General guidance only — follow your local licensing and contract requirements.
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