IP2025 is the biggest change in EPC methodology of the last 10 years. Incomplete or low-quality photo documentation has been the #1 reason VEKA returns files for correction since July 2025.
The solution: systematic on-site work with a fixed checklist, an app that requests the right photo per field, and metadata (GPS, timestamp) automatically in the filename. Below per category: minimum count, concrete requirements, and a how-to text usable on site.
The 8 mandatory photo categories
Façades
Minimum: each façade + corner façades between two sides.
- One full photo per façade, straight on (no oblique perspective)
- Full façade visible from ground to roof (for terraced house: neighbour façades partially visible)
- Annex or different build years: separate photos per section
- Corner façade: at least one photo where both parts are visible
Roof structure and insulation
Minimum: attic with visible insulation, roof structure (trusses), roof surface.
- Visible insulation: thickness measurable (ruler or tape alongside) + brand label if present
- Structure: visible beams, trusses, sub-roof
- Pitched roof: photo from below (battens + sub-roof)
- Flat roof: photo from above + covering
- Inaccessible attic: explicitly note in file + photo of hatch
Floor and cellar/crawl space
Minimum: if cellar/crawl space accessible: floor seen from below + any insulation.
- Cellar: photo of ceiling (= floor of level above) + insulation
- Crawl space: photo of underside of ground floor + insulation thickness
- Slab on grade: photo of floor-wall junction with visible insulation
- Inaccessible: explicit note in file
Window and door types
Minimum: one photo per unique window type (profile + glazing combination).
- Per type: distant photo (full window) + detail (profile + glass corner)
- Insulating double glazing: corner spacer label (U-value printed)
- Different materials (PVC / wood / aluminium): separate photos
- Front door: separate photo + detail (if distinct)
Heating installation
Minimum: boiler fully in frame + nameplate legible + thermostat.
- Full boiler shot: brand and model clearly visible
- Nameplate: serial number + power (kW) legible
- Heat pump: outdoor unit + indoor unit + both nameplates
- Thermostat: photo + type (clock/smart/standard)
- Fuel storage (if present): photo of oil tank or gas connection
Ventilation system
Minimum: unit + type (A/B/C/D) + filters.
- Unit: nameplate + brand + model
- Type: A (natural), B (mech supply), C (mech extract), D (balanced with HRV)
- D system: HRV unit + filter state
- Supply/extract grilles: min 1 photo in a 'key' room (kitchen, bathroom, bedroom)
Domestic hot water
Minimum: DHW appliance + nameplate + capacity.
- Boiler (gas/electric): full photo + nameplate (power + capacity in litres)
- Heat-pump water heater: COP value on nameplate legible
- Combi boiler: combi function + DHW capacity
- Solar water heater: panels + storage tank + circulation pump
Renewable energy
Minimum: solar panels + inverters + meter photos.
- Panels: full photo of each roof plane with panels + countable
- Nameplate on one panel: Wp rating legible
- Inverter: photo of nameplate + model
- Production meter or digital meter P1 port: recent reading visible
- Heat pump: see category 5
Workflow tips saving 20 min per file
- Use an app that requests the right photo per field — no sorting afterwards. The photo lands directly in the right file.
- Work with a template of the 8 categories you tick off at each measurement.
- Auto metadata (GPS + timestamp + file ref in filename) prevents confusion between files on a single day.
- Filenames per IP2025 category (e.g.
facade-front.jpg,boiler-nameplate.jpg) speeds up VEKA. - Keep 1-2 'extra' photos (street view) to reconstruct the file later.
- Lighting: flash in cellars, attics, meter cabinets. Poorly-lit photos rejected by VEKA.