Build the estimate from a scope, not a gut number
On anything bigger than a repair, work through the job the way it will be built: demolition, structure, rough-in (plumbing, electrical, HVAC), inspections, close-up, finishes, cleanup. Each phase becomes one or more lines. It's how you catch the forgotten items, like the haul-off, the floor protection or the second inspection.
For each line, total up labor hours, materials (with waste), equipment and any sub's bid, then add your overhead and profit. Some contractors show markup per line, others put it into the unit prices. Either is fine as long as you're consistent.
Subcontractors, allowances and contingency
Subcontractor work. Get written bids from your electrician, plumber or HVAC sub before you finalize the estimate, and mark those lines "(sub)". If a sub's number is a placeholder, label it as an allowance.
Allowances cover things the client hasn't picked yet: tile, fixtures, cabinets, flooring. Write the budget and how it's calculated ("$9/sq ft × 190 sq ft"). If they choose a $14 tile, the difference is billed; if they choose cheaper, it's credited.
Contingency is a separate line for hidden conditions in existing buildings: rot, old wiring, out-of-plumb walls. Five to 10% is common on remodels, more for old houses. State that it's only used with the client's approval, so it doesn't look like padding.
Payment schedule and deposits
Tie payments to milestones the client can see, not to dates. A typical remodel schedule:
- Deposit on signing.
- Payment at rough-in inspection passed.
- Payment at a finish milestone (drywall, cabinets set, tile complete).
- Final payment at walkthrough, with a punch list.
Check your state's rules first. Several states limit deposits on home improvement work; California caps the down payment at $1,000 or 10% of the contract price, whichever is less, and requires progress payments not to get ahead of the work done.
Exclusions, changes and validity
List the exclusions that cause arguments on remodels: furniture moving, asbestos or lead abatement, structural engineering, HVAC changes, landscaping repair after equipment access, and owner-supplied items.
Say how changes are handled: any change to scope gets a written change order with a price before the work is done. That one sentence prevents most end-of-job disputes.
Give the estimate a 30-day validity; lumber and sub availability won't wait longer. When the client accepts, the estimate becomes the base for progress billing on your contractor invoice and your construction invoice.
Presenting the estimate to the client
A remodel estimate can run to dozens of lines, so walk the client through it rather than just emailing a total. Group lines by phase, put the allowances where they can see them, and explain what the contingency is for. Clients who understand an estimate are far less likely to dispute the final invoice.
Write it in plain words. "Relocate shower valve, new drain" means more to a homeowner than an abbreviation from your takeoff sheet. Keep the detailed takeoff for your own files.
Last checked October 23, 2026.