How to Audit a Contractor Estimate Line by Line in 2026

When three contractors bid the same kitchen remodel, it is common to see proposals ranging from $55,000 to $110,000 for identical work. That is not a negotiating range. That is a signal that one or more of those estimates is missing something. A low estimate is almost never a good deal. It is a document that is missing line items. Those missing items will come back as change orders after you have signed, after demolition has started, and after you have no leverage. The estimate is the contract you never signed. Every vague line item is a future argument waiting to happen. Read it like a lawyer, not like a hopeful homeowner.

A complete estimate is a line-by-line accounting of every dollar. If a contractor gives you a one-page document with three line items and a total, that is a quote, not an estimate. A proper estimate must include: demolition and debris removal (itemized by scope), permits and fees (specific dollar amount), framing and structural (separate from finish carpentry), rough trades listed separately (plumbing, electrical, HVAC), insulation and drywall, finish materials with specific products or dollar-amount allowances, finish labor by trade, cleanup and final haul-away, and a 10-20% contingency. A kitchen remodel estimate with proper breakdowns will typically run 4 to 6 pages. If yours is shorter than two pages, items are missing.

Not all missing or low line items are honest mistakes. Some are strategy. Permits: fees in California range from $1,500 to $8,000 for a typical kitchen or bathroom remodel. Some contractors list $500 flat. That number is fiction. Allowances without dollar amounts: 'Tile allowance: TBD' is not an estimate. That single line item can swing $3,000 to $15,000. Unforeseen conditions: legitimate contractors price in a 10-15% contingency. If a contractor lists zero contingency and then hits you with $12,000 in 'unforeseen conditions' change orders, that is not bad luck. That is a sales strategy. Site protection: dust barriers, floor protection, and temporary toilet facilities are real costs that get omitted.

Change-order bait is a specific technique. The contractor scopes the estimate narrowly, wins the bid with a low number, and then uses ambiguous language to justify charging more once work is underway. Vague scope: 'Demo existing kitchen and prepare for new installation' vs 'Remove and haul all existing cabinets (upper and lower), countertops, and flooring to dumpster. Protect adjacent living room flooring with Ram Board during demo phase.' 'As needed' pricing: open-ended change order buckets. Ask for a not-to-exceed dollar amount. No exclusions list: a well-written estimate lists what is explicitly NOT included. If there is no exclusions section, everything is arguable.

Build a comparison matrix. Take every line item from the most detailed estimate and create a column for each contractor. Then fill in what each contractor is charging for each category. What you will consistently find: the low bid is missing 3 to 5 line items that the others included, the allowances on the low bid are 30 to 50% below market, and one contractor is including a contingency and the others are not. When you adjust for apples-to-apples, the gap between the $62,000 bid and the $88,000 bid usually closes to $8,000 to $15,000. That is a real negotiating range. The original $26,000 gap was mostly missing scope and underpriced allowances. Or use Opsite's $49 Pro Report which runs an AI-powered comparison of your estimates against current market rates for your project type and location.

Not everything is negotiable and not everything is padded. General contractor markup (15-25%): worth challenging if over 30%. Ask for OH&P as a separate line. Permit fees ($1,500-$8,000): verify with your city's fee schedule online. Demolition labor ($800-$2,500 for a kitchen): only challenge if wildly high. Cabinet installation labor ($1,500-$3,500): not usually negotiable - varies by complexity. Electrical rough-in ($3,500-$9,000 for kitchen): challenge if a single number with no detail. Contingency (10-20%): do not negotiate this down. This is what protects you from change orders.