Help
Frequently asked questions
Quick answers to the questions we hear most often. Still stuck? Email support@costkit.ai.
How CostKit works
What does CostKit actually do?
You describe a project — the type of work, where it's located, square footage, finish level, and any scope notes — and CostKit generates a complete, phase-by-phase estimate with line items, labor, materials, overhead, and contingency in under 60 seconds. The output is a branded PDF you can send to a client.
How long does an estimate take to generate?
Most estimates complete in 8–15 seconds. The slowest first PDF download after an idle period can take 3–5 seconds for the rendering service to warm up; subsequent PDFs are near-instant.
Can I edit line items after the AI generates them?
Yes, on paid plans. You can adjust quantities, unit costs, descriptions, add or remove line items, and tweak overhead and contingency percentages. The estimate recalculates automatically. Free-plan users get the generated estimate as-is.
Does CostKit work for my trade?
CostKit covers residential general contracting, remodeling, roofing, HVAC, electrical, plumbing, painting, concrete and flatwork, siding, drywall, framing, and demolition. If you can describe the scope of work, the AI adapts the phase structure to your trade.
Can I use my own logo and branding on the PDFs?
Yes, on any paid plan. Upload your logo in Settings and it appears on every estimate PDF you generate. Custom colors, fonts, and section visibility are available on the Pro plan via the template builder.
Accuracy & data sources
The single most important thing to know about CostKit is that the numbers aren't invented by AI. They're grounded in real construction cost data, then adjusted for your region and project.
Where does CostKit get its cost data?
Our pricing model layers several sources. We start with a published cost reference used by professional estimators. On top of that we use current US government data on construction labor wages by trade and state, and current material producer price index data so prices reflect this year, not the year the reference was printed. We also incorporate climate-zone requirements, flood and wind-zone construction overhead, and regional labor-market signals (residential building permit activity) so a hot Texas market doesn't get priced the same as a soft Ohio market. Finally — and this is the part that compounds over time — contractors who use CostKit can record what a job actually cost when they finished it, and those anonymized outcomes feed back into the pricing model.
How accurate are the estimates?
On our internal benchmark across trades and regions, CostKit median estimates land inside the expected range about 75–80% of the time. That number is what professional estimators call "feasibility-grade" or "Class 4" accuracy — good enough to set a client expectation, win a bid, or check a sub. In practical terms: a $15,000 bath remodel estimate is typically within $12,000–$18,000 of the final job cost. A $80,000 kitchen remodel is typically within $68,000–$92,000. A $500,000 new build is typically within $425,000–$575,000. For binding contracts you should still validate against your supplier quotes.
Why is CostKit better than just asking ChatGPT?
A general-purpose chatbot can produce a number when you describe a project, but it has no idea what materials cost in your zip code, no way to enforce a real phase structure, and no mechanism to ground its output in current market data. The result is a confident-sounding paragraph that's wrong in ways you'll only catch after you bid the job.
Do you cover commercial or industrial work?
CostKit is currently tuned for residential and light-commercial work — single-family homes, multi-family up to about 12 units, small office build-outs, and trade-specific projects in those segments. Heavy commercial, industrial, and civil work need different cost models and aren't covered yet.
How are regional differences handled?
Every estimate is adjusted for the state and city you enter. We apply state-level labor wage adjustments, regional material price differentials, hurricane/seismic/flood-zone construction premiums where applicable, and energy-code premiums (e.g., Title 24 in California, stretch codes in MA, hurricane bracing in FL). A premium kitchen in Manhattan is not priced like a premium kitchen in Tulsa.
Pricing & billing
What plans does CostKit offer?
Free (2 estimates/month, watermarked PDFs), Starter ($39/mo, 25 estimates/month, your branding), Pro ($89/mo, unlimited estimates, custom templates and cost adjustments), Team ($179/mo, everything plus 5 seats and shared estimates). Annual billing saves 20% on all paid tiers.
What counts as an estimate?
Each time you generate a new estimate by submitting the wizard, that's one estimate against your monthly count. Re-downloading the PDF, editing line items, duplicating an existing estimate, or regenerating a PDF after edits doesn't cost an additional estimate.
Can I cancel anytime?
Yes. Cancel from Settings → Subscription. You keep access to paid features through the end of your current billing period, then revert to the Free plan. No cancellation fees, no contracts.
Do you offer refunds?
If something is broken on our end and you can't use the product, email us within 7 days of your charge and we'll refund you. Outside of that window we don't offer refunds — but you can cancel anytime to stop future charges.
Can I change plans mid-month?
Yes. Upgrades take effect immediately and we prorate the charge. Downgrades take effect at the start of your next billing period.
Do you offer annual pricing?
Yes — all paid plans have a yearly option that saves 20%. Pick monthly or yearly when you subscribe; you can switch later from Settings.
Account, data & security
Who owns the estimates I generate?
You do. CostKit holds your estimates so you can read them back on the dashboard and re-download PDFs, but the content belongs to you. If you cancel, we keep your estimates accessible for 90 days on the Free plan, then archive them.
Do you train AI models on my estimates?
No. Your estimates, project descriptions, and client information are not used to train any AI model. The cost-data improvement loop is opt-in and only uses anonymized actuals (you choose to record what a finished job cost) — never client names, addresses, or estimate notes.
Is my data secure?
Authentication is handled by Firebase. Data is stored on Cloudflare's edge platform with TLS in transit and encryption at rest. PDFs are served via short-lived signed URLs (7-day expiry). Stripe handles all payment information — we never see your card number.
Can I sign up with Google?
Yes. Click 'Continue with Google' on the signup or login page. Same account works either way — you can switch between email/password and Google sign-in.
How do I delete my account?
Email us and we'll permanently delete your account, profile, and all associated estimates within 30 days. We don't have a self-serve delete button yet, but we will.
PDFs, templates & client delivery
What does the PDF look like?
A clean, professional document with your logo (paid plans), project summary, phase-by-phase breakdown, line items with quantities and unit costs (optional), overhead and contingency, and terms. Three template presets are included; Pro users can build custom templates with their own colors, fonts, and section visibility.
Can I email the estimate directly to my client?
Yes, on Starter and above. Click "Send" on the estimate detail page, enter your client's email, write a personal message if you want, and CostKit sends a branded email with a link to view the estimate online. You see when they open it.
Can clients view the estimate without downloading the PDF?
Yes. Every estimate gets a private shareable link. Send that link to your client and they see a clean web view (no login required) — same content as the PDF, easier on mobile.
Can I track which estimates I won?
Yes. Mark each estimate as draft, sent, won, lost, or expired from the dashboard. The status pipeline lets you see your win rate over time. Pro users can also record actual costs after a job is complete, which (anonymized) helps tune the pricing model for your trade and region.
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