Before you sign a contractor, we tell you what's wrong, what's missing, and exactly how to renegotiate. Built for investors and developers who close deals on numbers, not gut feelings.
12-hour delivery · 1-page forwardable memo · Used by investors and owner's reps
Stress Test Results
Before launch, we ran three adversarial stress tests against real-world bid scenarios. Here's what happened.
We submitted an 8-trap bid — inflated unit prices hidden behind clean formatting, scope buried in exclusions, line items that didn't add up. The system caught all 8. The largest single discrepancy was $60K in materials that didn't match market rate for the zip code.
We simulated a contractor pushing back hard on the memo — "you're wrong," "that's standard industry pricing," "everyone charges this." The system held its analysis through all 5 escalation messages and did not revise a single flag under social pressure.
Three bids, different scopes, different formats. The stated lowest bid had $28K in missing scope. After normalization, it was the most expensive of the three. The system ranked them correctly and refused to issue a verdict on the incomplete bid until scope was clarified.
How It Works
No meetings. No spreadsheets. Submit your bid, get your leverage.
Upload the contractor's proposal through our intake form. Include the project address, budget range, and any specific concerns. Takes 2 minutes.
Our research engine runs live permit fees, material costs by zip code, labor rates (union and non-union), contractor license status, and comparable project data for your market.
Powered by Perplexity ComputerA 1-page PDF lands in your inbox within 12 hours. Verdict, top 5 flags with dollar exposure, missing scope, and exact language to use when you call the contractor.
The Deliverable
Not a 100-page analysis that buries the decision. Not a vague "you should negotiate." An exact verdict, specific dollar amounts, and the words to say.
Every memo is built to survive a conversation with your GC. That's the test we build it to pass.
This bid is overpriced by an estimated $38,000–$52,000 and contains 3 missing scope items that create significant change order exposure post-signing.
Pricing
Investors closing 3 to 12 deals a year get a subscription. Single bids always available at entry level.
API access, white-label, volume pricing, and team seats for hard-money lenders and owner's rep firms who need bid verification at scale.
Why CostCheckGPT
No contractor relationship. No referral fee. Just the numbers.
Every analysis pulls real-time permit fees, material costs, labor rates, and license status for your specific zip code and project type.
The system was stress tested specifically for contractor pushback. It doesn't revise a flag because someone argues with it.
The memo is written to be sent directly to your contractor. That conversation changes the deal. That's the point.
The system was built by CostCheckGPT, backed by a licensed general contractor in NYC and LA. The flags it catches are the ones contractors know to hide.
Built for 3 to 12 deals per year. Monthly tiers exist because professionals run multiple bids, not just one per decade.
The live research layer runs on Perplexity Computer. Jurisdictional data, contractor complaint history, comparable projects — all live, all current.
Ready to Negotiate
Submit the bid. Get your memo in 12 hours. Know exactly what to push back on before you sign.
Submit Your Bid — $249Investor Pro at $499/mo for up to 5 bids · Developer Pro at $999/mo for up to 15 bids