What is Obra Maestra?
Obra Maestra is an AI platform for construction. For contractors, it's where they quote, buy materials, plan and get paid for every job. For material stores and brands, it's the moment the purchase is decided, because every quote already carries the materials list with quantities and prices.
At the center is Mae, Obra Maestra's AI agent. Describe the job the way you'd tell your helper, by text, voice, photo or plan, and you get back a professional quote: line items, materials, labor and today's prices from stores in your area.
Over 1,800 contractors and tradespeople use it today in Chile, Mexico, Colombia, Peru, Argentina, Spain, Portugal, Brazil and the United States.
How Obra Maestra works, step by step
From the client's request to buying materials, with no spreadsheets in between.
- 1
Tell Mae about the job
Type, send a voice note or upload a photo or a plan, from the web or the app. For example: "6 x 6 ft bathroom, tile on floor and walls, replace toilet and sink".
- 2
Mae calculates and prices it
It works out how much material each line item needs, adds waste and converts it to the format you buy in: bags, buckets, sheets or lengths. Then it finds each product's price in the catalogs of stores in your city.
- 3
Review, adjust and send
Edit any quantity or price, see your cost and margin separately, and send the quote as a branded PDF or a link. Your client approves in one click, without signing up.
- 4
Buy and run the job
The materials list becomes a shopping cart priced by store. From the same quote you build the Gantt chart, report progress with photos and bill by milestone.
What makes Obra Maestra different
Calculated quantities, not guesses
For the most common line items, quantities come from trade-specific rules: net measure, waste and purchase format. If a detail that moves the total is missing, Mae asks instead of assuming.
Real prices by city
150+ store catalogs and over 1 million products with prices, updated every day. Your quote reflects today's costs, not last season's.
It knows every trade
21 trades, with their materials, waste and slang.
Talk to it like your helper
If you can send a voice note, you can use Obra Maestra. Web and app, with one account.
From quote to job paid
Gantt chart, progress reports with photos, deposit and milestone billing. All of it comes from the quote you already made.
You have the final say
Mae gives you the first draft; you add your margin and judgment. Every material, quantity and price can be edited by hand.
Obra Maestra vs. a spreadsheet
What changes day to day for a contractor who stops quoting by hand.
| Spreadsheet | Obra Maestra | |
|---|---|---|
| Time per quote | 2 to 4 hours | Minutes |
| Prices | You look them up store by store | Today's prices from stores in your area |
| Quantities | By hand, at risk of running short | Calculated per line item, with waste and purchase format |
| Sending to the client | An attachment you have to resend and wait on | Branded PDF or link; your client approves in one click |
| Buying materials | Request prices again at every store | Ready-made cart priced by store |
| After approval | Another spreadsheet for the job | Gantt chart, photo progress reports and milestone billing |
One platform for every side of the job
One quote connects the people who build with the people who sell.
Contractors
Quote in minutes and win more jobs.
A professional quote with materials, labor and today's prices. Send it by link or PDF and know what you earn before you send it.
- Mae by chat, voice, photo or plan
- Shopping list and ready-made cart
- Gantt chart and milestone billing
Material stores
Get ready-made orders from contractors in your area.
Hardware store, retail or online store: your products, with prices, inside every quote contractors build near you. The order arrives complete.
- Integrating your catalog is free
- Cart in your online store or a list for the counter
- Benefits Club for your frequent buyers
Brands and manufacturers
Get into the job when the purchase is decided.
Your product specified in the quote, right when the contractor decides which material to use.
- Your catalog and data sheets inside Mae
- Benefits Club for your installers
- Demand data by trade and area
- Plumbing
- Electrical
- Masonry
- Painting
- Carpentry
- Roofing
- Drywall
- Tiling
- Locksmithing
- HVAC
- Remodeling
- Structural work
Why is it called Obra Maestra?
In Spanish, obra maestra means masterpiece, and maestro is what Latin American builders call the tradesperson who does the work: the one who shows up with the tools, measures, quotes and stands behind the job. Obra Maestra is built for them, so every job they deliver, from the quote to the last progress photo, lives up to their craft.
A good quote reflects the experience of whoever made it, earns the client's trust and raises the odds of winning the job. That's the masterpiece we want every contractor to deliver, in minutes instead of hours.
Who we are
Obra Maestra was born in Santiago, Chile, backed by Start-Up Chile. A full-time team of civil engineers, construction engineers, advertising professionals and journalists combines software, AI and construction know-how: the construction engineers review how every line item is calculated.
We work with material stores and industry brands so the prices and products contractors see are the real ones.
Plans and pricing
Contractors
Pro Plan · US$19.90 USD / mo
7 days free with up to 5 quotes, no card. Local price in each country.
Stores
Per Pro Buyer
Integrating your catalog is free. With the Benefits Club you gift Pro to your frequent buyers and pay for each active one. No commission on sales.
Brands
Per Pro installer
Benefits Club in Bronze, Silver and Gold tiers. No commission on sales, no exclusivity.