Free · No login required

AI Construction Cost Estimator

Cut overruns with live catalog prices — or let the AI draft a full line-by-line budget. No spreadsheets, no sign-up to start.

Live price catalog

Search materials. See real unit prices.

Type a material, labor item, or code — get live catalog prices from real sources, then add them straight into your free estimate.

Multi-source pricesUpdated continuously

Try:

Catalog + project management

Use the always-current price catalog and the full project workspace — budgets, tasks, versions, and collaboration — the best way to run estimates from bid to delivery.

Open the full product

Up-to-date catalog pricesBuilt for project control✓ Free to try · no login

Your estimate

Add your company info, logo and the client's contact for a branded budget.

Description	Unit	Qty	Unit price	Total
…

0 of 100 line items

Currency

Subtotal$0.00

Markup%$0.00

Total estimate$0.00

Enter your email to download or send this budget — and get a link to save it.

Save this budget and run the full project

Keep live catalog pricing, claim this estimate, and unlock project management — chapters, measurements, versions, collaboration, and Excel/BC3 exports.

Full product from $15.00/moUp-to-date catalog + project control Free account — save this estimateClaim lines and continue later

How it works

Search or describe

Find materials in the live catalog, or tell the AI what you're building — in your own words.

Price against the catalog

Line items pick up real unit prices that update with the market, so you cut cost guesswork early.

Refine and manage

Adjust quantities and markup here, then sign up to run the project with the full workspace.

Frequently asked questions

Is the AI cost estimator free?

Yes. You can build an estimate with the AI assistant for free, with no login required. Creating an account lets you save, add full price detail and measurements, and export to Excel or BC3.

Where do the prices come from?

Line items are priced against Omnicost's construction cost catalog, sourced from multiple real suppliers and updated continuously — not invented by the model. That is how you reduce cost overruns from stale unit prices.

What's the difference from the full version?

The lite estimator builds a flat list of line items. The full product adds chapters, price decompositions, measurements, versioning, collaboration, and project management — built to control costs from bid to delivery.

Do you store my estimate?

Your estimate is kept temporarily so you can come back to it. Sign up to keep it permanently and turn it into a managed project.