A
Altbau
Building Type
A pre-war building, typically constructed before 1949. Altbau apartments are prized for their high ceilings (often 3–3.5m), ornate stucco, hardwood floors, and large windows. However, they often come with outdated plumbing, poor insulation, single-glazed windows, and potential structural issues. A
building inspection is especially important for Altbau purchases.
Example: “The apartment is a beautiful Altbau in Prenzlauer Berg with original Stuck ceilings.”
Auflassung
Legal
The formal declaration of agreement between buyer and seller to transfer property ownership. This must be made before a Notar (notary) and is a required step before the new owner can be entered in the Grundbuch (land register). The Auflassung typically happens at the same appointment as the Kaufvertrag signing.
Auflassungsvormerkung
Legal
A priority notice of conveyance registered in the Grundbuch. It protects the buyer between contract signing and final ownership transfer by preventing the seller from selling to someone else, taking out additional mortgages, or otherwise encumbering the property. Think of it as your legal “reservation” on the property.
B
Bauabnahme
Inspection
The formal handover inspection of a newly built or renovated property. During a Bauabnahme, defects are documented before you accept the building from the contractor. Once you sign the acceptance protocol (
Abnahmeprotokoll), the burden of proof for defects shifts from builder to owner. Always have an independent
Bauabnahme inspection before signing.
Baugutachten
Inspection
A comprehensive building inspection report. A Baugutachten covers structural condition, moisture, electrical systems, heating, windows, roof, and any defects. It’s the German equivalent of a building survey. Essential before purchasing any property.
Learn about our Baugutachten service.
Baulast
Legal
A public law obligation registered against a property. Unlike Grundbuch entries, Baulasten are recorded in the Baulastenverzeichnis at the local Bauordnungsamt. They can include rights of way, minimum distance requirements, or obligations to maintain access for neighbouring properties. Not visible in the Grundbuch — you must request them separately.
Bausachverständiger
Professional
A certified building expert or surveyor. A Bausachverständiger inspects properties, writes expert reports, and provides independent assessments of building condition and value. Certification can come from various bodies including DESAG, TÜV, or IHK.
Alice Carpenter is a DESAG-certified Bausachverständige.
Betriebskosten
Costs
Operating costs for a property, also called Nebenkosten (ancillary costs). These include water, waste disposal, building insurance, caretaker costs, garden maintenance, lift maintenance, street cleaning, and more. Landlords pass these costs to tenants via the annual Betriebskostenabrechnung (operating cost statement). As a buyer, check the Hausgeld breakdown to understand these costs.
Bewertungsgesetz (BewG)
Legal
Bodenrichtwert
Valuation
The official standard land value per square metre for a defined area, determined by the local Gutachterausschuss (valuation committee) based on actual sales data. Published online at boris.de or the relevant state portal. Used in property valuations, tax calculations, and as a benchmark for land prices. Updated annually.
E
Eigentümergemeinschaft (WEG)
Legal
The owners’ association in a condominium building. All apartment owners are automatically members. The WEG makes decisions about shared areas, maintenance, renovations, and Hausgeld amounts through regular Eigentümerversammlungen (owners’ meetings). Before buying, always review the WEG Protokolle (meeting minutes) from the last 3 years — they reveal planned expenses and building problems.
Energieausweis
Document
The energy performance certificate, legally required when selling or renting property in Germany. Shows the building’s energy efficiency on a colour scale from A+ (excellent) to H (poor). Two types exist: Bedarfsausweis (calculated from building data, more reliable) and Verbrauchsausweis (based on actual consumption, cheaper but less accurate). Sellers must present it to buyers before contract signing.
Erbpacht / Erbbaurecht
Legal
A heritable building right — you own the building but lease the land beneath it, typically for 50–99 years. You pay an annual Erbbauzins (ground rent) to the landowner (often the church or municipality). When the lease expires, the landowner can reclaim the land. Properties with Erbbaurecht are cheaper to buy but come with ongoing ground rent and potential lease expiry risk.
Erbschaftsteuer
Tax
Inheritance tax. Rates range from 7–50% depending on your relationship to the deceased and the value inherited. Tax-free allowances (Freibetrag): €500,000 for spouses, €400,000 for children, €200,000 for grandchildren, €20,000 for siblings and others. Property is often overvalued by the Finanzamt.
Learn how to challenge the valuation.
G
Grundbuch
Legal
The official land register, maintained by the local Grundbuchamt (land registry office). It records ownership, mortgages (Grundschuld), easements (Dienstbarkeiten), and rights of way. Divided into three sections: ownership details, encumbrances and restrictions, and mortgages. Always obtain a current Grundbuchauszug (extract) before purchasing — your Notar will do this as part of the purchase process.
Grunderwerbsteuer
Tax
Property transfer tax, paid by the buyer when purchasing real estate. Rates vary by federal state: Berlin 6%, Bavaria 3.5%, NRW 6.5%, Hamburg 5.5%. Calculated on the purchase price. This is a one-time cost on top of the purchase price — budget for it alongside Notar fees (~1.5%) and agent commission (3–7%).
Grundriss
Document
Floor plan. Every property listing should include a Grundriss showing room layouts, dimensions, and door/window positions. Compare it carefully with reality during viewings — old Grundrisse may not reflect modifications. A professional inspection includes verifying the actual layout against the documented floor plan.
Grundschuld
Finance
A land charge registered in the Grundbuch as security for a mortgage. Unlike a Hypothek (which is directly tied to a specific loan), a Grundschuld exists independently and can be reused for new loans without re-registration. When buying, ensure the seller’s existing Grundschuld will be deleted (gelöscht) at completion.
Grundsteuer
Tax
Annual property tax paid to the municipality. Recently reformed across Germany (2025 reform). The amount depends on the property’s assessed value, the municipal tax rate (Hebesatz), and the property type. Typically €200–€800 per year for apartments. As a tenant, this is passed through to you via the Betriebskosten.
Gutachterausschuss
Government
The independent valuation committee that collects and analyses property sales data for a region. They publish the Bodenrichtwert (standard land values) and the Grundstücksmarktbericht (property market report). Their data is the foundation for independent property valuations. Useful free resource when researching property prices.
H
Hausgeld
Costs
The monthly fee paid by apartment owners to the WEG (owners’ association) covering shared building costs: building insurance, caretaker, cleaning, garden, lift, heating, water, waste, and the Instandhaltungsrücklage (maintenance reserve). Typically €2.50–€5.00 per m² per month. High Hausgeld isn’t necessarily bad — it may indicate a well-maintained building with healthy reserves.
Hausverwaltung
Professional
Property management company. Manages the day-to-day operations of a building on behalf of the WEG: collecting Hausgeld, organising repairs, handling tenant issues, preparing annual accounts. Quality varies enormously. Before buying, check the Hausverwaltung’s reputation and review their annual accounts (Jahresabrechnung).
K
Kaufnebenkosten
Costs
The additional costs on top of the property purchase price. Typically 7–15% of the purchase price, comprising: Grunderwerbsteuer (transfer tax, 3.5–6.5%), Notar fees (~1.5%), Grundbuchamt fees (~0.5%), and estate agent commission (3–7.14% depending on region). In Berlin, total Kaufnebenkosten are typically around 10–12% of the purchase price.
Kaufvertrag
Legal
The purchase contract for real estate. In Germany, all property purchases must be notarised by a Notar — private agreements are not legally valid. The Notar drafts the Kaufvertrag, reads it aloud to both parties, and ensures all legal requirements are met. You receive the draft at least two weeks before the signing appointment. Have it reviewed by your own lawyer or advisor.
Kurzgutachten
Inspection
A short or summary inspection report. Less comprehensive than a full Baugutachten but covers the key risk areas: structure, moisture, windows, heating, and major visible defects. Ideal as a pre-purchase “red flag check” to decide whether to proceed with a purchase. Faster and more affordable than a full inspection.
Learn about our Red Flag Check.
N
Nebenkosten
Costs
Ancillary costs. In rental context, these are the operating costs (Betriebskosten) added to your base rent. In a purchase context, Nebenkosten refers to Kaufnebenkosten (the additional costs beyond the purchase price). Always clarify which meaning is intended. Your Warmmiete (warm rent) = Kaltmiete (cold rent) + Nebenkosten.
Notar
Professional
A public notary — required for all property transactions in Germany. The Notar drafts the Kaufvertrag, verifies identities, ensures legal compliance, handles the Grundbuch transfer, and manages the payment process. Notar fees are approximately 1.5% of the purchase price and are typically paid by the buyer. The Notar is legally neutral — they represent neither buyer nor seller.
S
Schimmel
Defect
Mould. Extremely common in German apartments, especially in older buildings and ground-floor units. Caused by structural moisture, poor ventilation, or thermal bridging (Wärmebrücken). Can be a landlord’s responsibility (building defect) or tenant’s fault (inadequate ventilation). An independent inspection determines the cause.
Read our complete mould guide.
Sondereigentum
Legal
Individual ownership within a condominium — the part of the property that belongs exclusively to you. This includes your apartment’s interior walls, floor coverings, and fixtures. The building’s structure, roof, façade, stairwell, and common areas are Gemeinschaftseigentum (communal property) owned by all owners collectively.
Sonderumlage
Costs
A special one-off payment demanded from all apartment owners for major repairs or renovations that exceed the Instandhaltungsrücklage (maintenance reserve). Can range from a few thousand to tens of thousands of euros per apartment. Always check the WEG meeting minutes before buying — planned Sonderumlagen are usually discussed months in advance.
Stoßlüften
Maintenance
Shock ventilation — the German practice of fully opening windows for 5–10 minutes several times daily to exchange all indoor air quickly. This is the recommended way to ventilate in Germany (as opposed to leaving windows tilted, which is less effective and wastes energy). Essential for preventing mould, especially in well-sealed modern apartments.
V
Verkehrswert
Valuation
The market value of a property — the price a knowledgeable, willing buyer would pay a willing seller in an arm’s length transaction. Defined in §194 BauGB. Determined through a formal Verkehrswertgutachten by a certified Sachverständiger. Used for tax purposes, divorce proceedings, inheritance, and sale negotiations.
Verkehrswertgutachten
Valuation
A certified market value assessment. A formal 30–60 page report determining the Verkehrswert of a property, prepared following ImmoWertV methodology. Legally recognised by German courts and tax authorities. Required for inheritance tax challenges, divorce property division, and official proceedings.
Learn about our valuation service.
Vorkaufsrecht
Legal
Right of first refusal. In certain areas (Milieuschutzgebiete in Berlin, for example), the municipality has the legal right to purchase a property at the agreed sale price before it can be sold to the intended buyer. This is designed to protect tenants and prevent speculative purchases. Your Notar will check whether Vorkaufsrecht applies and obtain a waiver (Verzichtserklärung) from the municipality.
W
Wärmebrücke
Defect
Thermal bridge — a point in the building envelope where heat escapes faster than through surrounding areas. Common at window frames, balcony connections, and corners. Creates cold spots where condensation forms and mould grows. Detected with thermal imaging cameras during a building inspection. A major issue in older German buildings.
Wohnfläche
Measurement
Living area — the official measured size of a residential property. Calculated under WoFlV (Wohnflächenverordnung) for residential properties. Sloped ceilings under 1m = 0%, 1–2m = 50%, balconies = 25–50%. If your apartment is more than 10% smaller than stated in your contract, you can claim rent reduction.
Read our complete Wohnfläche guide.
Wohnflächenverordnung (WoFlV)
Standard
The Residential Space Regulation — the legal standard for calculating Wohnfläche in residential properties. Defines how different areas count: full-height rooms at 100%, rooms with 1–2m ceilings at 50%, areas under 1m at 0%, and balconies at 25–50%. This is the legally binding standard for rental disputes in Germany, superseding DIN 277.