Optimizing a real estate search is not just about browsing listings. The difference between a buyer who finds a property in a few weeks and another who searches for months often lies in the quality of the data they utilize even before the first visit. What indicators to cross-reference, what filters to apply, and which public databases to consult to verify each listing?
Public databases and real estate listing verification: the data that portals do not show
Real estate portals display photos, a price, and a surface area. These commercial details are not enough to assess a property. Recently, it has become possible to cross-reference the address of a listing with several public databases to obtain a more complete picture of the property and its surroundings.
The DVF database (Demandes de Valeurs Foncières) records sales that have actually been registered by notaries. It allows for a comparison of the price displayed in a listing with recent transactions in the same building or street. A significant discrepancy between the asking price and past sales indicates overvaluation or, more rarely, undervaluation.
Beyond the price, other databases are worth consulting during a real estate search on D Kom Déco or any other platform: co-ownership data, land registry, PLU (Local Urban Plan), natural and technological risks, nearby urban planning authorizations. A building permit filed on the adjacent plot can radically change the view or sunlight of an apartment.
| Public Database | Information Obtained | Usefulness for the Buyer |
|---|---|---|
| DVF | Recorded sale prices | Verify the consistency of the asking price |
| Land Registry | Parcel boundaries, area | Confirm the actual land size |
| PLU | Zoning, construction rules | Anticipate neighborhood developments |
| Géorisques | Natural and technological risks | Identify floods, cavities, pollution |
| DPE Database | Energy performance diagnosis | Filter out energy-inefficient properties |
DPE and rental ban calendar: a regulatory purchase filter
The energy performance diagnosis has changed its status. It is no longer just a comfort indicator. Since January 1, 2025, a property classified as G can no longer be rented in mainland France during a new lease, renewal, or tacit extension. Properties classified as F will be affected in 2028, and those classified as E in 2034.
For a buyer considering a rental investment, the DPE class becomes an immediate exclusion criterion. Buying a G-rated property without a budget for energy renovation work means acquiring a property that will not generate rental income.
Validity of old diagnostics
DPEs established before July 1, 2021, will no longer be valid as of January 1, 2025, even if their displayed validity period has not expired. When a listing includes an old diagnosis, a compliant DPE must be requested before any serious comparison with other properties. An outdated DPE can conceal a much less favorable actual classification.
Lease date and investment strategy
The lease date or its renewal becomes a financial parameter. The gradual ban applies to rentals and contractual deadlines, not to ongoing leases. An investor who buys an F-rated property with a lease running until 2027 has a grace period but will need to undertake renovations before the 2028 renewal.
Real estate search criteria: prioritize instead of accumulating
Most buyers start with a long wish list: neighborhood, area, brightness, floor, parking, proximity to transport, condition of the kitchen. The problem is not having criteria, but failing to rank them.
Distinguishing between non-negotiable criteria and adjustable criteria reduces the number of listings to process and speeds up decision-making. A non-negotiable criterion is an element you cannot change after the purchase. An adjustable criterion can be modified through renovations or changes in habits.
- Non-negotiable criteria: location (you cannot move the building), exposure, floor without an elevator, DPE classification for a rental investment, natural risk zone
- Adjustable criteria: interior layout, finishes, kitchen, bathroom, decoration, storage
- Criteria to weigh according to the project: exact area (a difference of a few square meters does not change usage), presence of a balcony, parking space (rentable separately in some neighborhoods)
By applying this hierarchy, you avoid eliminating a relevant property for a correctable flaw, and you do not waste time on a property with a structural defect that is a dealbreaker.
Property visits: what you need to check on-site, not on-screen
Listing photos are taken with a wide-angle lens that distorts volumes. The physical visit serves to verify three categories of information that cannot be assessed remotely.
- Sound environment: traffic noise, neighbors, courtyard. Visit at different times if the property seriously interests you
- Condition of common areas in co-ownership: stairwell, roof, facade, meters. Deteriorated common areas indicate future calls for funds
- Networks and structure: signs of moisture, visible plumbing condition, electrical panel, cracks. These elements weigh heavily in the post-purchase budget
A property with poorly maintained common areas will cost more than it appears. The minutes of the last three years’ general assemblies reveal voted works, unpaid charges, and ongoing disputes. Always request them before making an offer.
The fastest real estate search is not the one that multiplies visits but the one that filters in advance. Cross-referencing public databases, applying the DPE calendar as an exclusion criterion, prioritizing requirements based on their modifiability: these three filters reduce noise and highlight properties that truly deserve a visit.
