How new-home contract pricing can differ

Understand the questions to ask about a fixed price, cost-plus proposal or other pricing arrangement.

New Single-Family · Guide · Updated October 30, 2026

A fixed price still depends on defined scope

A stated total is useful only when the included work and documents are clear. Changes, allowances and exclusions can affect the eventual amount.

  • Identify the drawings and specifications behind the price.
  • Ask how allowance differences are reconciled.
  • Check how unforeseen work and design changes are handled.

Cost-plus needs clear cost and fee rules

In a cost-plus arrangement, payment is based on defined project costs and an agreed fee. The written agreement should explain those terms rather than relying on a broad label.

  • Define which costs are chargeable.
  • Ask what supporting records accompany invoices.
  • Clarify the fee basis and how forecasts are updated.

Have an adviser review the actual agreement

A guaranteed maximum, contingency or shared saving can mean different things in different agreements. Ask a qualified construction attorney to explain the proposed terms for your project.

  • Check any cap and its exceptions.
  • Define change approval and payment review.
  • Understand what happens if work is delayed or disputed.

What to check next

  • Identify the pricing arrangement.
  • Define allowable costs and fees.
  • Clarify change and allowance treatment.
  • Obtain advice on the proposed agreement.

Related reading

Choose your next step

Find contractors with relevant new-home experience, or talk with us about where your project stands.

Official resources

Check with the agency responsible for your property. City and County resources below apply within their respective jurisdictions.

Content updated .