BPS Construction Permit in Uruguay (2026): What It Is and How to Verify It

INGAR · 2026-02-13 · New Construction

What the "BPS construction permit" is and why it matters to you

If you are about to buy a house or apartment where construction work was done — an extension, a major renovation, an added floor — there is something that can halt the transaction entirely: the BPS construction permit.

In Uruguay, all construction work must be registered with the BPS (Banco de Previsión Social — the social security bank). It is registered, workers are declared, the corresponding contributions are paid, and when the work ends it is formally closed. If any step of this was not done, the property is "encumbered" and cannot be conveyed by deed until it is regularized.

At INGAR we see this often: a buyer finds the ideal property, moves forward with the deposit, and when the notary starts requesting certificates, an undeclared construction appears that nobody mentioned. What seemed like a 45-day purchase turns into 4 months. This guide explains how the system works, what the notary verifies, and how to avoid that situation.

How the system works (the real version)

When someone carries out construction work in Uruguay — whether building an entire house or adding a bedroom — there is a special contribution regime with BPS that covers construction workers. It works as follows:

Before starting (or within 48 hours of starting the work), the owner must register the project with BPS. A number called a construction registration number (matrícula de obra) is assigned.
During construction, the workers involved are declared and monthly contributions are paid. The rate is called AUC (Aporte Unificado de la Construcción — Unified Construction Contribution) and is 71.8% of gross daily wages. Yes, you read that correctly. It is a high rate because it covers everything: pension, workplace accident insurance (BSE), Christmas bonus, leave, vacation pay, and healthcare.
Upon completion, the end of work is reported to BPS within 30 calendar days.

If all of this was done, great: the property has a clean "BPS construction permit" and there is no obstacle to selling.

The problem is when it was not done. And in Uruguay, the number of works carried out without being declared is enormous.

Three arrangements depending on who hires the workers

Arrangement	Who manages the workers	Who pays BPS
By contract	A contractor (construction company)	Owner pays AUC; contractor manages personnel
By direct administration	The owner directly	The owner assumes full responsibility
Small-scale works	An authorized contractor (max. 85 working days)	The contractor handles everything

Why does this hold up a purchase transaction?

When a notary processes a purchase transaction, they must request a BPS Special Certificate (mandatory under Law 16,170). In addition, an Architect's Certificate is required: a professional inspects the property and certifies whether construction work was carried out.

The process works like this:

The architect visits the property and compares it against the plans registered with Catastro (land registry).
If the physical reality matches what was declared and no work was done in the last 10 years, a clean certificate is issued. The deed can proceed.
If there is construction that does not match what was declared (more built area, a new floor, an extension), the irregularity is detected.
The sale is halted until it is regularized.

Key fact: since Law 19,996 (in force since January 2022), only the last 10 fiscal years are reviewed. Previously it was 45 years. This enormously simplified the situation for properties with older works.

What happens if the work was not declared

If the Architect's Certificate reveals undeclared work within the last 10 years, it must be regularized. This involves a process with three agencies:

1. BPS

The work is registered retroactively. BPS can estimate the labor used based on a descriptive report of the construction and charge the corresponding contributions (at 71.8% of the estimated daily wage). For large works, this can be a significant amount of money.

2. DGI

The addition of real estate value is declared through form 5201 and the corresponding VAT is paid.

3. Catastro (Dirección Nacional de Catastro)

The DJCU (Declaración Jurada de Caracterización Urbana — Urban Characterization Sworn Statement) is updated so that the registered plans match the physical reality of the property. This is done by an architect or land surveyor.

Real costs of regularizing

Item	Estimated cost
Professional fees (architect/agent)	USD 160 - 300 + VAT
BPS contributions (depending on volume of work)	Variable — from a few hundred to USD 10,000+
VAT payable to DGI	Variable depending on added value
Municipal fees and fines	Variable — some departments double fines if they detect the issue before you regularize

Timelines

Simple cases (minor work, clear documentation): 5 to 15 business days.
Complex cases (large work, objections): 30 to 60 days or more.
Municipal process: add 30 to 60 additional days.

Real situations we encounter

The house with the extra bedroom

Someone bought a house 8 years ago and added a bedroom. They hired laborers "off the books" and never registered anything. Now they want to sell. The architect detects the extension, the notary halts the deed, and the seller must regularize: retroactively register the work with BPS, pay estimated contributions, update Catastro, and declare to DGI. Meanwhile, the buyer waits. Sometimes the deal falls through.

The apartment with the "new" kitchen and bathroom

A full renovation of a kitchen and bathroom in an apartment (replacing pipes, floors, cladding) constitutes construction work for BPS purposes. If it was done without being declared and the Architect's Certificate detects it, regularization is required. In practice this is detected less often in apartments than in houses (because the square meters don't change), but it can happen if the architect's certificate covers it.

The grandparents' house with 30-year-old extensions

Good news: if the work is more than 10 fiscal years old, there are no BPS contributions to pay (thanks to Law 19,996). However, the DJCU at Catastro still needs to be updated so that the plans match reality. This is a much simpler and cheaper process.

Work done "under the table" (the worst case)

Workers never declared, zero contributions, zero registration. BPS estimates the labor based on a description of what was built and charges retroactively. For a large extension this can cost thousands of dollars. It is the most expensive and slowest case to resolve.

What works do NOT require full registration with BPS?

Not everything requires a construction registration number. There are important exceptions:

Works under 30 working days (maintenance and improvement work that does not modify plans, with a labor cost of up to approximately $70,000). If you hire a company registered with BPS, you as the owner do not need to do anything with BPS — the company handles it.
Owner-built family housing: work done by the owner and their family for their own home. Requires that family income does not exceed 7 national minimum wages. It must be registered but a full exemption from contributions can be requested.
Pure maintenance: painting, fixing a faucet, changing a lock. If it is not construction, renovation, or structural modification, it does not apply.
Works over 10 fiscal years old: no retroactive contributions are required, although physical regularization with Catastro is still necessary.

How to protect yourself as a buyer

These are the concrete steps to prevent a BPS construction issue from derailing a purchase:

Ask the seller directly: was any work done in the last 10 years? Is it declared? Don't accept a "yes, everything is fine" — ask for documentation.
Your notary will request the Architect's Certificate and the BPS Special Certificate. Let them do their job. If there is a problem, it is much better to discover it before signing the deposit agreement than after.
If there is an undeclared work, negotiate who pays for the regularization. Legally it is the seller's responsibility (the work was done during their ownership period). But in practice, it is often negotiated as part of the purchase price.
Make your offer conditional. If you have doubts, include in the deposit agreement a condition such as "subject to satisfactory verification of BPS status and construction regularity." This gives you an exit if a serious problem appears.
If the property has older works (pre-2012), relax. Law 19,996 protects you from retroactive contributions. You will only need to regularize with Catastro, which is a relatively simple process.

What the notary verifies (summary)

Verification	Document	What it reveals
Was there construction work?	Architect's Certificate	Whether the physical reality matches what is registered with Catastro
Was it declared?	BPS Special Certificate	Whether works are registered and contributions are current
Do the plans match?	DJCU (Catastro)	Whether the declared square meters and layout are correct
Is there contribution debt?	BPS Special Certificate	Whether any outstanding debt remains — valid for 180 days