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CLAIMSTAKE · CHECKLISTE EINSEITER

Budget mechanics: why €30K is the real constraint

Financing and the numbers · Stand: 2026-08-10

PROTOMINDS
Bonn & Köln
Purchase costs of about 12% are unfinanceable — they burn equity and set the real price ceiling.

NRW purchase costs are ~12.0% with broker (6.5% transfer tax + ~1.9% notary/land registry + 3.57% broker) or ~8.4% without. Banks finance the price, not the costs — costs are unfinanceable equity burn.

So: price ceiling ≈ €178K with broker / €184K provisionsfrei to stay under €200K all-in. A provisionsfrei listing is worth €5–6K found money and can drop you into a cheaper interest tier.

Cash plan at €152K: costs €18.2K + RND appraisal €1.2K + DIY materials €3K + reserve €7.6K (never spend the reserve — it's the Sonderumlage/vacancy buffer).

Verified Primary Sources:

  • §Notar-/Grundbuchkosten (GNotKG) calculator(Baufi Deutschland, 2026)
  • §Bauzinsen-Korridor 10 J. 3,5–4,5% je nach Beleihung und Bonität(Baufi24, 2026-08)
  • §MFI-Zinsstatistik: Effektivzinssätze für Wohnungsbaukredite an private Haushalte, Neugeschäft (monatlich, nach Zinsbindung)(Deutsche Bundesbank, 2026-07)
  • §Aktuelle Bauzinsen — 10 J. 3,74% nominal / 3,83% effektiv, 15 J. 4,04/4,14 (Beispiel 350k auf 480k)(Dr. Klein, 2026-09)
  • §Dr. Klein Zinsentwicklung & Prognose(Dr. Klein, 2026-08)
  • §Zinsentwicklung: Seitwärtsbewegung um 4%, EZB-Leitzins 2,25%(Finanztip, 2026-08)
  • §FMH: Wie realistisch ist die 100%-Finanzierung(FMH, 2026)

Important Notice: This document is provided for structured preparation and does not replace qualified legal or notarial counsel. Claimstake is an independent analysis tool.

https://claimstake.de · budget-mechanics