Codex Arsenic
home/ journal/ outorga-onerosa-traduzida
← back to journal
Strategic Urbanism Issue 016 · 05.19.2026

Onerous concession, translated.

If CEPAC is the most financial form of Brazilian urban planning, the onerous concession of the right to build is the most everyday form. Every city with a master plan can use it. Almost none charges what it could. The question of this article is why.

Nikola Arsenic
Nikola Arsenic
Architect and Urban Planner
May 19, 2026
Read · 9 min
8 sections · 2 tables
Basic and maximum use coefficient: the conceptual basis of the onerous concession
01 · Continuation

CEPAC's less famous sibling

The previous article closed with the line that CEPAC is the most financial form of Brazilian urban planning. That instrument takes the headlines and the prospectuses, but it serves a minority of operations in a minority of cities. What sustains the daily life of Brazilian urban policy, from São Paulo to Petrópolis, is a much older, much simpler, and much more neglected instrument: the onerous concession of the right to build. This text explains how it works, why it is the most democratic instrument of the City Statute, and why so many Brazilian cities charge zero for it.

02 · The rule

What arts. 28 to 31 say, word by word

The legal provision for the onerous concession of the right to build is in four consecutive articles of the City Statute. The set is short and enough to understand the instrument.

Lei 10.257 of 2001, art. 28, caput The master plan may set areas in which the right to build may be exercised above the basic use coefficient adopted, subject to a counterpart to be provided by the beneficiary.
Art. 28, § 1 For the purposes of this Law, use coefficient is the ratio between the buildable area and the area of the lot.
Art. 30, caput and items A specific municipal law shall establish the conditions to be observed for the onerous concession of the right to build and to change use, determining: I, the calculation formula for the charge; II, cases subject to exemption from payment of the concession; III, the beneficiary's counterpart.
Art. 31 The funds obtained through the adoption of the onerous concession of the right to build and to change use shall be applied to the purposes set out in items I to IX of art. 26 of this Law.

The four articles answer three distinct questions. Art. 28 answers who can charge and in which areas: the master plan enables collection in specific zones, with counterpart. Art. 30 answers how to charge: a specific municipal law defines the formula, exemptions, and the counterpart the beneficiary must deliver. Art. 31 answers where the money goes: the funds are linked to the eight urban purposes listed in art. 26 of the same law. If any of the three is missing, the instrument sleeps.

03 · The gear

Three points in the chain, not four

The engineering of the onerous concession is leaner than that of CEPAC. It does not involve CVM, it does not involve a stock exchange, it does not involve a secondary market. It involves three agents only. The master plan defines the enabling. The specific law defines the ruler. The city hall charges at project approval.

The master plan enables.
The specific law calibrates.
The city hall charges.
Arsenic Architects, operational principle

The simplicity of the gear is one of the strengths of the onerous concession and also one of its weaknesses. Since there is no external regulator, no prospectus submitted to the CVM, no public auction, the instrument depends entirely on the internal consistency of three municipal decisions. If one of them fails, all the rest fails along with it.

04 · The formula

How the coefficient becomes counterpart

The counterpart calculation formula is the technical heart of the concession. It translates, into currency, the difference between what the master plan allows to build for free and what the development actually intends to build. The formula varies from city to city, but generally combines five variables:

  • Additional construction area. The square meters exceeding the basic use coefficient, up to the maximum limit of the zone.
  • Unit value of the land. Cost of the square meter of land in the locality, normally derived from the generic value plan of the IPTU or from independent appraisal.
  • Planning factor. Coefficient reflecting the public interest in densifying or discouraging the area, adjusted by the current urban policy.
  • Social interest factor. Reducer applied when the development delivers counterpart in social-interest housing, public facilities, or green areas.
  • Use factor. Coefficient differentiated for residential, commercial, mixed, or service use, according to the master plan priority.

The result of multiplying those variables is the value of the onerous concession owed by the development. The choice of factors is a political decision of the municipality. Calibrating the formula to collect enough without making the development unfeasible is the most delicate work of Brazilian urban policy, and what separates well-done OODC from decorative OODC.

The Onerous Concession formula: Additional Area × Land Value × Planning Factor × Social Factor × Use Factor
05 · Allocation

Where the funds go, under art. 31

Art. 31 of the Statute mandatorily ties the funds raised to the purposes of art. 26 of the same law. There are eight current purposes:

  • Land regularization of urban areas occupied informally.
  • Housing programs and projects of social interest, with priority for low-income population.
  • Constitution of land reserve for future urban actions.
  • Ordering and direction of urban expansion, preventing disorderly growth.
  • Deployment of urban and community facilities: schools, health posts, daycare centers, police posts.
  • Creation of public leisure spaces and green areas.
  • Creation of conservation units or protection of areas of environmental interest.
  • Protection of areas of historical, cultural, or landscape interest.

The practical operation of this binding varies. Some cities create dedicated municipal urban development funds, such as São Paulo's FUNDURB, instituted by the Strategic Master Plan of 2014, with its own management council and annual accountability. Other cities simply record the allocation in the current budget and risk losing traceability. The difference between a city that charges concessions and has an active FUNDURB and a city that charges concessions without a dedicated fund is usually visible in the quality of public space ten years later.

06 · Comparison

OODC and CEPAC, same principle, two scales

The two instruments belong to the same conceptual family: both are ways for the municipality to capture part of the additional value that it itself creates by allowing construction beyond the basic parameter. But they operate on different scales and with very different governances. The table below places the two side by side.

Axis Onerous concession, OODC CEPAC
Legal basisArts. 28 to 31 of the StatuteArts. 32 to 34 of the Statute and OUC municipal law
Where it appliesIn any zone provided by the master plan with a coefficient above the basic oneOnly within the perimeter of an OUC instituted by specific law
Who regulatesMunicipality, through master plan and specific municipal lawMunicipality issues, CVM registers and supervises
How it is paidDirectly to the municipality, at the time of project approvalWith certificates acquired in the primary or secondary market
TradabilityNo title, no secondary marketBook-entry title, freely traded, active secondary market
AllocationPurposes of art. 26, often operated via municipal FUNDURBExclusively to the operation itself, under art. 33, § 1
Usual scaleDevelopment by development, mid-sized funding, billion-level totals in major citiesLarge-scale operation, hundreds of millions to billions concentrated in one perimeter
Who uses itAny Brazilian city with a master planPractically only São Paulo and Rio de Janeiro
07 · Common failures

Why so many cities charge zero

The provision of the onerous concession in master plans is practically universal in Brazil. Effective collection, on a scale compatible with the authorized densification, is the exception. Three failures, generally combined, explain the mismatch.

  • Regulatory failure. The master plan provides for the concession in the abstract, but the municipality never approves the specific law of art. 30. Without a formula, without exemption cases, without definition of counterpart, the urban planning provision exists and the collection does not. It is the most common form of zero concession. It happens in mid-sized cities and in part of the capitals.
  • Formula producing irrelevant value. The municipality approves the specific law, but the formula is calibrated with factors so reduced that the charged value falls below the administrative cost of the collection itself. Typical cases: unit land value derived from an outdated generic value plan, planning factor reduced by sectoral pressure, cumulative reducers that bring the counterpart to zero in practice.
  • Allocation without traceability. The municipality charges, collects, but does not create a dedicated fund or management council. The funds enter the budget and mix with current revenues. The binding of art. 31 survives on the accounting balance, but disappears in execution: the funds do not reach the eight purposes of art. 26 at the expected scale. This is the least visible case, and the one that most corrodes the legitimacy of the instrument over time.
08 · Conclusion

The most democratic instrument

Onerous concession of the right to build does not need a prospectus, does not need the CVM, does not need a stock exchange, does not need a consortial operation. It needs three well-made municipal decisions: an honest master plan, a calibrated specific law, and a city hall willing to charge. That is why it is the most democratic instrument of the City Statute. Every Brazilian city with a master plan can use it.

That is also why it is the most neglected. Where the onerous concession works, it funds the public space that the current budget cannot reach. Where it does not work, the city authorizes construction and renounces the value it itself created. The choice between the two situations is municipal jurisdiction, and it is less technical than it seems. It is a political decision, supported by technical work.

share
Shared urban resources: social housing, parks, green areas, schools, public facilities, urban infrastructure, mobility, and community wellbeing
F · Sources consulted

Sources consulted

All URLs verified on May 19, 2026.

Updated on May 19, 2026. Declared pending: consolidated data on annual OODC collection per city in Brazil requires case-by-case consultation of Siconfi and the transparency portal of each municipality; the text describes the instrument without aggregated figures, and will be updated when a verifiable consolidated source becomes available.

Portrait of Nikola Arsenic
about the author

Nikola Arsenic

Architect and Urban Planner at Arsenic Architects. 19 years structuring urban developments in Brazil, from territorial diagnostics to urban feasibility modeling.

related reading

Continue on the financial urbanism trail.

All articles →
Arsenic Journal

Get strategic urbanism analysis in your inbox.

One send per month. No noise. Only the technical reads that guide market and territory decisions.

No spam. Unsubscribe with one click.