Removing Waterproofing from Historic Buildings: ESG Considerations and Methods for Social Housing Landlords and Real Estate Companies

Removing waterproofing from historic buildings - ESG Social Housing Landlords
March 13, 2026
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Removing Waterproofing from Historic Buildings: ESG Considerations and Methods for Social Housing Landlords and Real Estate Companies

Why De-impermeabilization Has Become a Strategic Issue for Landlords

The Impact of Courtyards and Parking Lots on Landlords' Assets

In a typical public housing complex, undeveloped areas account for 40% to 60% of the total managed area. Their paving leads to: reduced thermal comfort in the summer, localized flooding, high maintenance costs, and a decline in the complex’s appearance.

Increasing regulatory requirements

The SRU Act, the PCAET, the ZAN, and the CSRD all require property owners to manage their land holdings more responsibly. Local urban planning regulations are increasingly mandating minimum building coverage ratios for renovation projects.

What the CSRD and the European Taxonomy require

Land-use and land-sealing indicators

The CSRD requires reporting on environmental impacts related to land use, including: impervious surface area, vegetation cover, actions taken, and biodiversity indicators (CBSh).

Contributing to climate adaptation

The European Taxonomy requires real estate activities to demonstrate their contribution to climate change adaptation. De-impermeabilization and greening are eligible for recognition—provided they are supported by reliable data.

Identify and prioritize: the essential first step

The Challenge of a Dispersed and Diverse Heritage

A housing stock of 10,000 units may be spread across 200 residential complexes in 50 different municipalities. Aerial imagery offers a breakthrough: within a few weeks, the entire housing stock is analyzed, and each residential complex is assigned its own environmental indicators.

How aerial imagery solves the problem

Netcarbon analyzes aerial images of each residence to produce: land-use maps, the imperviousness rate per residence, surface temperature, carbon stock, and CBSh.

Waterproofing solutions tailored to public housing

Residential areas: parking lots, driveways, courtyards

  • Replacing asphalt with permeable pavers with vegetation: reduces imperviousness by 40 to 60%
  • Reduction in the number of parking spaces in residential complexes with high vacancy rates
  • Creating community gardens: significant social and environmental benefits

Areas around buildings: building bases, playgrounds

Planting vegetation at the base of the facade reduces the heat island effect, improves summer insulation, and enhances the landscape. Replacing playground pavers with permeable surfaces improves water infiltration.

Green roofs on existing buildings

Greening flat roofs improves summer insulation, reduces surface temperatures by 20°C to 40°C, and provides a habitat for biodiversity. Cost: €80 to €150 per square meter; often eligible for ANAH, Green Fund, and CEE grants.

Measuring and quantifying impact: reporting and carbon credits

Supporting ESG reporting with reliable data

The indicators produced by Netcarbon are ready for use in CSRD reporting: they are calculated using a documented, reproducible, and third-party-auditable methodology.

The Low-Carbon Label as a financial lever

The carbon credits generated can be retained or sold (€30–50 per ton of CO2). For a program involving 500 trees across 50 residential properties, the potential over 25 years can reach several hundred tons of CO2.

Case Study: Maisons & Cités

Comprehensive asset assessment:

  • 257 hectares of grassland (43% of the total area)
  • 106,488 metric tons of CO2 stored
  • 58% average vegetation cover

This assessment made it possible to identify residential areas with high levels of impervious surfaces and to launch a prioritized greening program.

Are you a social housing provider or real estate company looking to assess the potential for de-impermeabilization of your properties? Netcarbon analyzes all of your residential properties from the air. Contact us.

Nos articles

Combating UCCs: How Local Governments Can Measure and Demonstrate Their Impact

Soil De-impermeabilization: Definition, Challenges, and Regulatory Requirements in France

Climate Transition: Why Data Is the Real Driving Force Behind the Next Municipal Terms

Removing waterproofing in real estate projects: a regulatory requirement and a competitive advantage

Urban heat islands: Understanding the phenomenon to take more effective action

Low-Carbon Label for Infrastructure: Ports, Airports, and Highways Facing Offset Requirements

Heat Islands on Airport and Highway Rights-of-Way: Measure to Take Action

Removing waterproofing from public housing: how social housing providers are making their buildings more eco-friendly

Urban brownfields: an underutilized tool for land and environmental policy

Heat islands: How developers are addressing thermal considerations in their development projects

Reducing Urban Heat Islands in Construction Projects: Requirements and Methods for Developers

The Low Carbon Label and Real Estate Developers: How to Incorporate Carbon Sequestration into Your Development Projects

Schoolyards, Oases, and ZAN: How Unsealing Schoolyards Contributes to the Net Zero Land Take Goal

Oasis Playground: Turning the Schoolyard into an Urban Oasis

Removing Waterproofing from Historic Buildings: ESG Considerations and Methods for Social Housing Landlords and Real Estate Companies

Removing waterproofing in new construction projects: incorporating the CBS from the design phase to meet RE2020 and ZAN requirements

Greening a parking lot: why paved surfaces offer an opportunity for urban restoration

Green parking lots in urban development projects: how to use them as a regulatory and marketing selling point

Greening Parking Lots: What Local Governments Can Require, Fund, and Measure

Shopping Center Parking Lots: How Real Estate Companies Are Turning Their Asphalt Surfaces Into Green Assets

Removing impervious surfaces from parking lots and industrial sites: how infrastructure reduces its footprint on the ground

Low-Carbon Label in Urban Planning: Promoting Local Governments’ Renaturation Projects

Low-Carbon Label and Social Housing Providers: Promoting the Greening of Housing Stock

Oasis Courtyard: What is the budget, what are the financing options, and what is the return on investment?

Can nature in the city be objectified? Biodiversity, carbon, and the urban climate

The Role of Technology in Sustainable Land Use Planning

Local Climate Action: How Data Increases Public Acceptance

Urban Materials and Climate: How the Choice of Pavement Affects City Temperatures

Urban Renaturation: What Indicators Should Be Used to Measure Its Actual Impact?

Land-use change: What are the actual impacts on the local climate?

Heat islands: How developers are addressing thermal considerations in their development projects

How the popcorn industry pays its farmers based on the carbon sequestered in the soil

PCAET and Carbon Sequestration: A Guide to Understanding and Acting

Acting for the Planet: The Crucial Role of Carbon Storage

Hedges: climate soldiers

Change the World with Soil: 4 for 1000 Initiative Essentials

Beyond Emissions Reduction : The Co-benefits of Carbon Capture