Land regularization: what is REURB, and how do you legalize your property step by step?

Need to regularize your settlement? See how we act as REURB lawyers in São Paulo, from categorisation to registration.

Need help with your case? See how to regularize your property in São Paulo.

Property irregularities may involve a missing property record, construction without an occupancy permit or an unregistered subdivision. These are different problems: living there and paying property tax does not, by itself, establish ownership or identify the procedure required. Such issues may hinder sales, financing and inheritance planning; an assessment identifies what needs to be resolved.

Land regularization is a legal, urban-planning, environmental and registration process for integrating informal urban settlements and granting rights to occupants, not automatically converting all possession into ownership. This article explains Law 13.465/2017, Reurb-S and Reurb-E, the path to registration and the instruments available when REURB does not apply.

What does the law say when the property "does not exist" at the registry?

For transfers between living persons, art. 1.245 of the Brazilian Civil Code generally requires registration of the title; this does not exclude acquisition through inheritance or adverse possession. Receipts and property tax payments may document the situation but do not alone prove ownership. Within REURB, land legitimation (legitimação fundiária) recognizes original acquisition under statutory conditions, whereas possession legitimation first recognizes possession, convertible into ownership when the requirements are met. The CRF (Land Regularization Certificate) enables the approved project and corresponding rights to be submitted for registration; it does not mean all infrastructure work is complete.

Reurb-S or Reurb-E: which applies to your case?

The law splits regularization into two tracks:

For initial guidance on long-standing possession, try our adverse possession checker. It is not a decision on your rights.

Use the property regularization diagnosis to organize the information before legal assessment.

Track	For whom	Costs
Reurb-S (social interest)	Settlements occupied predominantly by low-income families, under the municipality's criteria	Exemption for the registration acts listed in art. 13, § 1; not for every private expense or tax
Reurb-E (specific interest)	Other informal urban settlements meeting the legal requirements and not classified as Reurb-S	Project, infrastructure and registry costs allocated under the law and the procedure

The municipality determines the classification; residents cannot freely choose it. Under Reurb-S, the law assigns the project and essential infrastructure, where needed, to the municipality or Federal District. Public and private parties may apply under either track. The key is which right can be recognized and registered, without confusing recognized possession with ownership already acquired.

What is the step-by-step path to regularization?

1. Legal and registration assessment — tracing the origin of the area, the parent property record and the occupants' situation;
2. Application to open the REURB procedure with the municipality (the beneficiaries themselves, residents' associations, the government and other authorized parties may apply — art. 14 of Law 13.465/2017), followed by the required notices and participation of interested parties;
3. Regularization project — topographic survey, a register of the families and, where required, urban-planning and environmental studies;
4. Municipal approval and issuance of the CRF;
5. Registration of the CRF at the Real Estate Registry, opening the individual property records.

Where REURB is unsuitable, possible routes include adverse possession (usucapião), in court or out of court (art. 216-A of Law 6.015/1973), compulsory adjudication and boundary rectification. Land classified as rural is not automatically excluded: the statutory urban use and settlement characteristics matter. Title disputes require their own assessment and do not automatically make another route viable. Public land cannot be acquired by adverse possession. Environmental and safety risks require studies; remaining on site may be impossible if the risks cannot be eliminated, corrected or managed.

Hypothetical example: the Jardim das Acácias subdivision

Imagine an unregistered 1980s subdivision in Greater São Paulo with 120 families, whose developer has died and whose houses have only informal private contracts. If it qualified for Reurb-E, the residents' association could apply, commission a topographic survey and submit a project to the municipality. Titling would depend on approval, assessment of the rights and registration of the CRF. If a buyer proposed a 30% discount because of the irregularity, this would be a hypothetical negotiation figure, not a market statistic. Regularization may remove obstacles but does not ensure full price, financing or a return greater than the costs, which must be budgeted.

The most common (and costly) mistakes

1. Treating receipts and property tax as a "deed". Risk: discovering at the sale, the inheritance division or the financing stage that the property is worth less — or cannot be sold at all.
2. Waiting for the government to fix it on its own. Public and private parties may apply; check who is responsible for the work and costs under Reurb-E. Risk: decades of waiting.
3. Regularizing "just my house" in an informal settlement. Without addressing the source (the subdivision's parent property record), individual registration is usually not viable. Risk: spending on filings the registry sends back.
4. Ignoring environmental and urban-planning issues. Permanent preservation areas (APPs) and risk areas require specific treatment in the project. Risk: a rejection after years of proceedings.

An actionable checklist to start regularizing

• Gather the property's history: how it was acquired, contracts, receipts, old property tax bills;
• Request a certificate of the area's parent property record from the Real Estate Registry;
• Check with the municipality whether a REURB procedure has already been opened for the settlement;
• Identify neighbors in the same situation — collective regularization spreads the costs;
• Take the assessment to a lawyer to choose the instrument: REURB, adverse possession or rectification.

Frequently asked questions

What is urban land regularization (REURB)?

It is the set of legal, urban-planning, environmental and social measures under Law 13.465/2017 to integrate informal urban settlements and grant occupants rights when the applicable requirements are met. Reurb-S covers predominantly low-income settlements with specific statutory exemptions; Reurb-E covers other eligible settlements with its own cost responsibilities. Ownership is not acquired automatically in every case.

I have a receipt and have paid property tax for years: do I already own the property?

Receipts and property tax payments alone neither transfer nor prove ownership. For transfers between living persons, the general rule is registration of the title in the property record (art. 1.245 of the Brazilian Civil Code), without excluding inheritance or adverse possession. These documents may assist the assessment of possession and regularization but do not guarantee a financed sale or an uncomplicated division among heirs.

How much does it cost to regularize a property?

Under Reurb-S, the registration acts listed in art. 13, § 1, of Law 13.465/2017 are exempt; this does not automatically waive every private expense or tax. Project and infrastructure costs follow the statutory responsibilities of the track. Reurb-E and adverse possession may involve surveys, project costs, registry fees and legal fees, depending on the case. An individual budget is needed: appreciation greater than the expenditure is not guaranteed.

Can a property in an irregular subdivision be regularized in São Paulo?

It may be possible after examining the settlement, the nature of the land, environmental and safety conditions, registration history and municipal assessment. Land legitimation requires proof that the settlement existed on or before December 22, 2016; that cutoff does not apply indiscriminately to every REURB instrument. If one route is unsuitable, other lawful options must be assessed, without automatic approval.

When should I see a lawyer about land regularization?

At the assessment stage, before spending on surveys or fees. A lawyer can examine registration history, assess REURB, adverse possession, compulsory adjudication or rectification, and advise the parties before the municipality and registry. This does not mean every REURB application requires a private lawyer: representation depends on the procedure, and public programs or legal aid may be available.

Regularizing means unlocking value that is already yours

Irregularities may restrict transactions and credit and complicate inheritance. Law 13.465/2017 offers tools to address them, but timing, feasibility and outcomes depend on the land, the rights involved and the approvals required. An assessment helps compare costs, risks and available routes before commissioning a project.

At Falchet e Marques Sociedade de Advogados, a law firm in São Paulo (Av. Paulista), we handle land regularization (Reurb-S and Reurb-E), adverse possession and rectifications before municipalities and Real Estate Registries — from assessment to the registration stage, subject to feasibility and the right recognized.

Talk to our team on WhatsApp: +55 11 95901-1854 — tell us your property's situation (how you acquired it and what documents you have) and we will point you to the right regularization instrument.