EPBD Renovation Passport Software: Build Spec for 2026

When a Berlin office REIT renewed a long-term tenant in early 2026, the lease packet included a renovation passport draft showing how the building reaches zero emissions by 2030. The data behind the draft lived in nine systems: an EPC PDF on the facility manager’s drive, a BACS dashboard in the building automation system, a maintenance log in Planon, three contractor spreadsheets, a material register from the last refurbishment, and three regulator portals. None of them spoke to each other. The renovation passport was put together by two analysts in twelve days.

This is the recurring shape of EPBD work in 2026. The regulation is in force. Member state transposition lands in May 2026. The buildings are real. The data is scattered. Proptech platforms that get the data plumbing right are pulling away from those that treat ESG reporting as a download from a static EPC.

This post is for proptech product leads, IWMS architects, and real estate asset platform teams scoping the EPBD work for 2026 and beyond. It assumes familiarity with the basic EPBD recast and goes deeper into the renovation passport data model, the Digital Building Logbook, and the operational realities of integrating across building automation, maintenance, and regulator systems.

What Directive 2024/1275 actually requires

Directive (EU) 2024/1275, the recast Energy Performance of Buildings Directive, entered into force on 28 May 2024. Member states must transpose most provisions by 29 May 2026. Specific articles operate on later timelines but the May 2026 transposition deadline triggers the next 18 months of activity.

The provisions that change what proptech platforms must produce:

• Zero-emission buildings: all new residential buildings must be zero-emission from 1 January 2030, public-sector new builds from 1 January 2028.
• Worst-performing stock: the worst-performing 16% of non-residential buildings must be upgraded by 2030, the worst 26% by 2033. The thresholds are defined member-state-by-member-state through Minimum Energy Performance Standards.
• National Building Renovation Plans were due to the Commission by 31 December 2025. Most member states submitted draft plans in late 2025; the final plans inform national MEPS and incentive design.
• Renovation passports become available on a voluntary scheme by 29 May 2026 in each member state. A renovation passport is a multi-step renovation roadmap showing how an existing building reaches near-zero-emission status, with timeline, expected costs, and expected savings.
• Digital Building Logbook (Article 19) is the persistent data shell holding the EPC, the renovation passport, the smart readiness indicator, and material passport data.
• Solar mandate: all new residential buildings get rooftop solar where technically feasible by 31 December 2029, all suitable existing public buildings phased 2027 to 2030.
• Smart Readiness Indicator under Commission Recommendation 2019/1019: a methodology for scoring how well a building’s controls, automation, and data infrastructure support occupant needs, grid responsiveness, and operational efficiency.

For platforms serving asset managers, this means a building’s data footprint inside proptech is no longer “an EPC plus a maintenance log”. It is a structured, multi-document, regulator-facing data record.

Renovation passport data model: 12 minimum data points

The renovation passport is the centerpiece of the recast and the part most proptech platforms have not yet built. Annex VIII of the directive provides a minimum content list. Member states will extend this through transposition, but the baseline that platforms can build to today:

1. Building identification (cadastral reference, address, building type, year of construction).
2. Current energy performance (EPC class, primary energy use kWh/m2 per year, CO2 emissions kg/m2 per year).
3. Building envelope description (wall, roof, window U-values; airtightness if measured).
4. Technical building systems (heating, hot water, cooling, ventilation, lighting, controls).
5. Renewable energy systems (rooftop PV potential, current installations, on-site storage).
6. Smart Readiness Indicator score and components.
7. Renovation roadmap with sequenced measures, timeline, dependencies, and triggering events.
8. Expected post-renovation performance at each milestone.
9. Expected cost per measure, in member-state currency, with year of estimate.
10. Expected savings per measure (energy and operational cost).
11. Eligible subsidies and financial instruments mapped to each measure.
12. Issuing professional with credentials and date.

The data model that supports this is not a flat record. It is a graph: each measure references the technical building systems it modifies, the envelope components it affects, the post-measure performance estimate, and the financing instrument that might fund it.

Two design decisions matter early:

• Treat the renovation passport as a versioned snapshot. A passport issued in 2026 captures the building state at that date and the planned roadmap from there. As measures are implemented or as MEPS thresholds change, a new passport version is issued. The previous version is retained, not overwritten.
• Separate planning data from operational data. Operational data (real meter readings, BACS feeds) updates daily. Planning data (projected performance after Measure 3 is implemented in 2028) updates rarely. Mixing them in one table produces a brittle schema.

Digital Building Logbook architecture: DBL as long-lived data shell

Article 19 introduces the Digital Building Logbook as the federating layer for all building data. It is not a single regulator-operated system. It is an architectural concept that member states implement nationally. Each building has one DBL; the DBL contains and references the EPC, the renovation passport, the SRI, material passports, BIM models, maintenance logs, and any other relevant documents.

For proptech platforms, the practical architecture:

• The DBL is the system of record for the building’s regulatory data. Operational systems remain the source of truth for live data.
• The DBL exposes a read API to authorized parties (owners, tenants, surveyors, financiers, regulators) with access scoped by role.
• The DBL versions every document. An EPC issued in 2023 is preserved even after a 2027 EPC supersedes it.
• The DBL references rather than copies where possible (a BACS feed is a link to the BACS system; the SRI score is computed against that feed at refresh time).

Several member states are now running DBL pilots: Germany (Gebäudeenergieausweis-Plus), the Netherlands (BENG framework extending into DBL), Belgium (Vlaams Energiebedrijf platform), France (CARNET program). None of the pilots produces a single binding API specification yet; the proptech platform that ingests data from a Dutch DBL today will need a different adapter for a German DBL in 2027.

The pragmatic build pattern is a DBL service layer in the proptech platform that exposes a canonical internal model and adapts to each member-state DBL through plug-ins.

EPC database integration per member state

Energy Performance Certificates are issued under member-state schemes. The recast requires EPC data to be machine-readable and accessible through national databases, sharable cross-border via the upcoming EU Building Stock Observatory APIs. As of 2026:

• Germany: dena Gebäudereport and federal-state EPC registries; most data still PDF-first with structured exports emerging.
• France: Diagnostic de Performance Energétique (DPE) issued through ADEME’s Observatoire; structured XML feed available.
• Spain: Certificación Energética de Edificios with autonomous-community-level databases (different schemas across Madrid, Catalonia, Andalusia).
• Netherlands: EP-Online via RVO; mature structured data interface.
• Italy: Sistema Informativo sugli Attestati di Prestazione Energetica (SIAPE), with regional variation.

The integration challenge is not the protocol; it is the variation. EPC class scales differ by member state. Calculation methodologies differ (national application of EN ISO 52000 series). Update frequencies differ. A proptech platform operating across five member states will run five EPC adapters with five different refresh cadences for the foreseeable future.

The 2026 baseline is to ingest EPC data structurally where the national system exposes it, fall back to OCR of PDF EPCs where it does not, and re-validate the result against the official register. Both paths produce a normalized record in the proptech canonical model; both paths carry a confidence flag that surveyors see when they edit data downstream.

SRI scoring engine: connecting BMS and BACS feeds

The Smart Readiness Indicator is scored against three impact criteria (energy efficiency, occupant comfort and well-being, flexibility for the grid and on-site storage) and seven service domains (heating, cooling, ventilation, hot water, lighting, electricity, controls). The full methodology is in Commission Recommendation 2019/1019 and the supporting technical study.

The SRI score requires evidence at two levels:

• Capability: which smart-ready features the building has installed (smart thermostats, occupancy sensors, demand-response interfaces).
• Performance: how those features are actually used (set-points adapted to occupancy, ventilation modulated by CO2, electrical loads shifted to off-peak).

The capability data is typically a one-time assessment by a qualified assessor; the performance data benefits from a live BACS or BMS connection. A proptech platform that ingests BACnet over IP, KNX, or Modbus feeds from the building automation system can produce a continuously refreshed SRI score rather than a static annual report.

The Class C BACS requirement is independent but related: under Article 13(7), non-residential buildings with an effective rated output of HVAC systems over 290 kW must have a BACS Class C system in operation by 31 December 2027. The data flowing out of those BACS systems is exactly what the SRI engine consumes. Buildings approaching the 2027 BACS deadline are also approaching SRI readiness if the proptech platform is built to ingest the data.

Build vs IWMS: extending Spacewell or Planon vs custom

The competitive landscape for EPBD-ready proptech in 2026:

• Spacewell (Nemetschek group): strong IWMS with growing ESG and EPBD modules.
• Planon: enterprise IWMS, ESG reporting, energy management module, expanding renovation passport features.
• MRI Software: real estate management suite, ESG via partnerships, EPBD work in progress.
• Deepki (Paris-based): ESG data platform with strong CRE coverage, EPBD reporting features.
• Madaster: material passport platform, complementary to DBL rather than competing.
• PlanRadar (Vienna-based): construction and inspection platform with growing portfolio reporting.

For a real estate operator with EUR 100 million to EUR 5 billion AUM, the build-or-extend decision turns on three factors:

1. Existing IWMS commitment. If Spacewell or Planon is already deployed for maintenance and space management, extending into renovation passport functionality is faster than a parallel build.
2. Portfolio diversity. A pan-European portfolio with assets in eight member states benefits from a vendor that has already done the per-member-state EPC integrations. A national portfolio with all assets in one regulatory regime can build the integration once and own it.
3. Internal engineering capacity. EPBD work is data engineering plus regulatory monitoring plus building physics. The data engineering is hire-able; the building physics requires partnership with energy auditors regardless.

A custom build typically takes 12 to 24 months to reach parity with a configured vendor solution for the renovation passport feature. The build pays off when the proptech platform is the primary product (rather than an internal tool) and when the renovation passport workflow is differentiated from other vendors’ implementations.

Data exchange: BIM IFC, BACnet, and ISO 16739

The building data ecosystem already has standards; the recast does not invent new ones. The relevant standards for an EPBD-ready proptech platform:

• ISO 16739 (IFC) for BIM models: the dominant industry standard for building geometry, systems, and material data. Renovation passport tools that ingest IFC can derive envelope U-values, system inventories, and material masses without re-entry.
• BACnet (ISO 16484-5) for building automation data: the dominant interoperability standard for HVAC, lighting, and access control data.
• Modbus and KNX for lower-tier control systems.
• EN ISO 52000 series for the energy performance calculation methodology.

A proptech platform that ingests IFC, BACnet, and EPC data with appropriate adapters can produce most of the renovation passport content automatically, leaving the planning content (the actual renovation roadmap and cost estimates) to qualified professionals. The leverage is real: a passport produced from clean data in eight hours is competitive against one assembled by hand in twelve days.

A 2026 punch list for EPBD-ready proptech

The realistic 2026 scope for an asset management platform:

1. Canonical building data model with versioned EPC, SRI, and renovation passport records.
2. EPC adapter for each member state of operation, with fallback OCR for buildings lacking structured records.
3. BACS / BMS ingestion for the top 30% of portfolio by floor area (the assets where MEPS deadlines hit hardest).
4. Renovation passport workflow producing the 12 minimum Annex VIII data points, with professional sign-off and version retention.
5. DBL adapter for the member states with operating DBL infrastructure (NL, BE, FR, DE pilot regions).
6. MEPS tracking dashboard showing each asset’s current energy class versus the member-state MEPS trajectory through 2030 and 2033.

EPBD is not a single feature release. It is a multi-year platform direction. Proptech operators that build the data foundation in 2026 are positioned to absorb the rest of the recast through 2030 without rewrites. Those treating each regulatory event as a discrete project are accumulating integration debt that will surface at the worst possible time, when a tenant or a financier asks for the passport on a tight close.