How can I tell if a renovation estimate is realistic?
A realistic estimate is itemized, names specific products or states honest allowances, includes permits and cleanup, and lines up within roughly 15 percent of other bids for the same written scope. Be suspicious of a single-line total, of allowances far below retail pricing, and of any number dramatically lower than the others — that gap almost always reappears later as change orders. Price differences between good contractors usually come from scope, not from greed.
Reviewed by Owners & Homes · Published March 4, 2026 · Last reviewed September 2, 2026
Signals to check
- Itemized by trade and phase
- Expected
- Allowances stated with dollar figures
- Expected
- Permits, disposal and cleanup listed
- Expected
- One bid 30%+ below the others
- Investigate before accepting
What affects the answer
- How complete your scope document was when the bid was prepared.
- Whether the contractor visited the site and opened anything up.
- Material selections — a bid without them is a guess with a number attached.
- Current labor and material availability in your market.
What homeowners often overlook
- Two bids can be far apart simply because one includes items the other excludes.
- Exclusions are usually listed at the bottom and rarely read.
- An unusually low bid may reflect an underinsured or overextended contractor.
- Verbal promises that never make it into the written scope.
Questions to ask before hiring
- Can you break this into labor, materials and allowances by phase?
- What is specifically excluded from this price?
- What assumptions did you make about conditions you could not see?
- How firm is this number, and what would change it?
A practical next step
Build an independent cost range for your project first, then read every bid against it. Knowing the number before the conversation changes the conversation.
This is general planning information, not an appraisal, engineering opinion, financial advice or a contractor proposal. Costs, timelines and property-value effects vary according to location, scope, materials, workmanship, property condition and market activity.