Luegallee 42
Düsseldorf-Oberkassel
Describes the existing surrounding development — no statement about what is permissible on your plot. What can actually be realised is decided bindingly by the building authority (preliminary building notice); this is not building or legal advice.
Only data-backed factors enter the calculation. Multiplier on the base sale price per m². The impact bands follow published hedonic pricing research (incl. BBSR 2015 on public transport, Univ. of Bonn 2017 on flooding) and are set conservatively — details under assumptions. Risk layers (contamination · ordnance · site servicing) in the personal assessment.
Live sources: BORIS-NRW WMS · DKAN Düsseldorf (noise) · NRW flood hazard map · NRW solar atlas · INSPIRE heritage NRW (CC BY-ND, display only) · OSM Overpass (public transport + schools) · BNetzA broadband atlas (fibre, 100m grid) · City of Düsseldorf open data: population forecast 2035 (dl-de/zero-2-0) and Quartiersatlas 2024 (dl-de/by-2-0).
Changes update range, map and calculation live.
The impact bands follow published hedonic pricing research and are set conservatively: noise based on valuation practice (~1 % per dB above 50 dB(A)) and CRES research, applied to night-time levels; flooding based on Univ. of Bonn 2017 (~10 % discount in flood zones), graded by water depth; public transport based on BBSR 2015 (rail +5–6 %, bus +1–2 %). Solar, fibre, schools, demographics and neighbourhood use deliberately small bands (≤ ±3 %) as the research base is less settled. The total location factor is capped at ±15 %. Bands reviewed internally, as of 07/2026. Not a formal valuation (ImmoWertV) — a building permit pre-enquiry or certified appraisal remains authoritative.
Illustrative calculation using the residual value method (developer method) with standard assumptions — not a valuation within the meaning of § 194 BauGB. Concrete values depend on the development plan, assumptions and negotiation; § 5 UWG-compliant range disclosure. Risk layers (contamination · ordnance · site servicing) are verified manually in the personal assessment (GDPR Art. 6 (1) (b)).
Sources: LIKA NRW · BORIS-NRW (dl-de/by-2-0) · ALKIS · NRW 3D building model LoD2 · DKAN Düsseldorf · NRW solar atlas · INSPIRE heritage NRW (CC BY-ND, display only) · OSM Overpass (ODbL) · BNetzA broadband atlas · GMB Düsseldorf 2025 (appraisal committee · DL-DE/Zero-2.0) · district new-build levels derived from official BORIS-NRW property reference values (dl-de/by-2-0), calibrated against GMB 2025 · Premises Fidelis market observation 2026-Q1 · internally plausibility-checked (as of 06/2026).