AI Construction Cost Estimator

Costlark is an AI construction cost estimator for contractors, builders and tradespeople. Snap up to 3 photos, add a one-line description (or dictate it), answer a few short questions and get an itemised estimate in minutes, priced from your own price list.

Turn the estimate into a branded PDF quote, send your customer a link where they can accept, ask a question or request changes, and track the quote from sent to accepted.

HOW IT WORKS
- Photograph the job and describe it in a sentence
- Answer the AI's short follow-up questions
- Check your prices: your labour rate and your own price list drive the numbers
- Edit any line, add your own lines, set markup and tax
- Send a PDF quote or a client link and see when the customer responds

WHAT YOU GET
- AI-drafted estimates you review before anything goes to a client
- Your own price list, customers and quote templates
- PDF quotes with your business details
- Works offline: create and edit estimates without a signal, they sync when you are back online
- Voice dictation for the job description (English, beta)
- No ads

BUILT FOR CONTRACTORS
Plumbers, electricians, painters, carpenters, tilers, plasterers, roofers, landscapers and general builders. Built for UK contractors first, also useful in the US and Canada.

FREE TO TRY
You get free estimates to start. An optional monthly or yearly subscription unlocks client links and removes the watermark.

IMPORTANT
Estimates are AI-assisted drafts. They can contain mistakes and are not professional advice or a binding quote. Always review and correct every estimate before sending it to a customer.

Your photos and job description are sent to Google Gemini and an image-check service only to prepare your estimate. See our privacy policy for details.

Recent changes:
Improved: prices you save are reused in later estimates. Clearer steps for lines without a price. Quotes with unpriced lines can no longer be sent by mistake. New green Contact support button (WhatsApp). Stability improvements.