Choosing the builder is the most expensive decision of the project — more than the land and more than the design, because poor execution degrades both. Most construction disasters don't come from bad luck: they come from hiring without verifying and signing contracts that say nothing.
Verify the basics before talking price
None of these points is negotiable, and all of them can be checked:
- An active RUC and operation notice: the company formally exists and can invoice.
- The responsible professional's JTIA license (idoneidad) — it can be looked up; a license number is not a secret.
- Delivered work you can visit or verify, not just renders and promises.
- References from previous clients, ideally from a project similar to yours in size and area.
Ask for delivered work, not renders
A render shows what the company wants to build; a delivered house shows what it knows how to build. Ask for addresses of finished projects and, if you can, talk to the owner: how surprises were handled, whether the final price resembled the agreed one, and whether they would hire again. Ten minutes of that conversation are worth more than any portfolio.
The contract is your only protection
The construction contract must put in writing the exact scope (with drawings and specifications attached), the price and what can change it, a schedule with verifiable milestones, and payments tied to actual progress — never to the calendar. A reasonable initial deposit exists in every build; a large advance with no work behind it is the classic mistake. Include a final retention (5–10% against a satisfactory handover) and how disputes get resolved.
Warning signs
Any of these should stop the signing until it's cleared up:
- A quote far below the others with no scope explanation to justify it.
- Pressure to sign 'this week' or to advance more money than the start requires.
- Refusal to share references, project addresses or the license number.
- Everything over chat and nothing in writing: no formal contract, no specifications, no schedule.
- No contingency in the budget and no procedure for change orders.
Compare at least three
With the same set of drawings, request a detailed quote from at least three companies and compare line by line, not the total. That's what this directory is for: profiles with delivered work, coverage areas and price ranges in plain sight, and direct contact with the company — no middlemen and no commission.
The directory does the hard part
Compare companies with delivered work, coverage areas and price ranges in plain sight, and contact them directly. No middlemen and no commission.
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