Five checks an expat can run before the notary date, the public data behind each, what the law protects you from and what it does not, and how LDP Group handles the price.
Quick answer
Compare the price per square metre with closing prices from the local valuation committee, not asking prices; check the rent behind it; read the owners' records; and get the bank's valuation or your own valuer's figure before the notary date.
Why the asking price is a weak guide
A German listing price is the seller's opening offer. The prices that matter are the ones buyers actually paid, and in Germany those are recorded: the notary must send a copy of every purchase contract to the local valuation committee (Gutachterausschuss), which keeps them in a purchase price collection (Kaufpreissammlung, § 195 BauGB). Property portals show asking prices; the committee's figures are closing prices. When a seller or an agent quotes "the market", ask which of the two is meant.
A fair price for an investment flat has three parts that you can check one by one: the price per square metre against comparable sales, the price against the rent the flat really earns, and the state of the building, which decides what you pay on top in the years after the purchase. The five checks below follow that order. None of them needs a lawyer, but most of the documents are in German, so plan for a translation; three need documents from the seller, so ask for those early.
Check 1: put the price on the right floor area
Price per square metre is the first comparison anyone makes, and it is only as good as the area it is divided by. For rented flats the usual basis is the living area regulation (Wohnflächenverordnung, WoFlV). It counts rooms with a clear height of at least two metres in full, rooms between one and two metres at half, and balconies, loggias, roof gardens and terraces as a rule at a quarter and at most at half (§ 4 WoFlV). Listings also use other bases, or simply add the balcony in full.
- Ask which standard the area follows and whether it was measured or copied from old plans. The declaration of division (Teilungserklärung) and its plans show the unit as it is registered.
- Count the balcony yourself. A 60 square metre flat with an 8 square metre balcony has 62 square metres of living area at a quarter and 64 at half; counted in full, as some listings do, it has 68. At 5,000 euros per square metre, the 6 square metres between the quarter rule and the full count are 30,000 euros of price that looks justified on paper.
- Sloped ceilings in an attic flat reduce the area under § 4 WoFlV. An attic flat priced on its full floor area is more expensive per real square metre than the listing suggests.
Once the area is right, divide the price by it. That figure is what you compare in the next check.
Check 2: compare with closing prices, not asking prices
Every part of Germany is covered by a valuation committee, usually one per district or city, in some states one per region or one for the whole state. It keeps the purchase price collection, evaluates it and derives standard land values and the other data that valuation needs, among them comparison factors per square metre of building (Gebäudefaktor) and multiples of the annual rent (Ertragsfaktor) (§ 193 Abs. 5 BauGB). Most committees publish these figures in an annual property market report (Grundstücksmarktbericht), often by district, building age and flat size.
| Source | What it tells you | Who can get it |
|---|---|---|
| Property market report of the local committee (Grundstücksmarktbericht) | Average closing prices per square metre for resale flats, usually by area, building age and size, often with rent multiples | Anyone; some committees publish it free, others sell it |
| Information from the purchase price collection (Auskunft aus der Kaufpreissammlung) | Individual comparable sales near the flat, anonymised | Anyone with a legitimate interest, under the rules of the federal state (§ 195 Abs. 3 BauGB); valuers use it routinely |
| Standard land value (Bodenrichtwert) | The average value of the land per square metre in a zone | Anyone (§ 196 Abs. 3 BauGB), in most states through the BORIS portal |
| A valuation by the committee itself | A full market value report for one property | The owner and the others named in § 193 Abs. 1 BauGB; a buyer before the purchase is not among them |
Compare like with like: the same district, a similar building age and a similar size. A flat in a 1960s building is not priced like a new build two streets away, and a small flat usually costs more per square metre than a large one in the same house. For a first overview by city, the city reports on this site give price per square metre and gross yield for 25 German cities, each figure with its source.
A price above the committee's average is not wrong in itself: a renovated flat, a high floor with a lift or a quiet courtyard can justify it. What it needs is a reason you can name. If nobody can name one, the gap is margin.
Check 3: test the price against the rent the flat really earns
For an investment flat the second comparison is the rent. Divide the price by the annual cold rent (Kaltmiete) and you get the purchase price multiple (Kaufpreisfaktor); its inverse is the gross yield. Example: 310,000 euros for a flat let at 1,000 euros cold rent a month is 12,000 euros a year, a multiple of 25.8 and a gross yield of 3.9 percent. Compare the multiple with the committee's rent multiples for the same kind of flat where it publishes them, and with the price-to-rent study, which lists the ratio for German cities.
- Use the rent in the lease, not the rent in the brochure. Ask for the lease and the last rent payments. A rent the tenant does not pay is not income.
- Check the cap. Where the rent brake applies, the rent of a new letting may exceed the local reference rent by at most 10 percent, subject to the statutory exceptions (§ 556d BGB). A price that only works with a rent above that cap after the next re-letting depends on one of those exceptions.
- The tenant stays. A sale does not end the lease (§ 566 BGB). In a running tenancy the rent can rise towards the local reference rent by at most 20 percent within three years, or 15 percent where the state has set the lower cap (§ 558 BGB); the local rent index (Mietspiegel) shows the reference rent.
- Look at the kind of lease. A graduated lease (Staffelmiete, § 557a BGB) rises in fixed steps, an index lease (Indexmiete, § 557b BGB) with consumer prices. The lease shows which applies, and that decides how the rent can develop. A government bill (Mietrecht II, not yet law in October 2026) would limit index-lease increases in tight markets.
A low yield is not a reason to walk away on its own, because in some cities the whole market trades at low yields; the rental yield atlas shows them by city. It is a reason to ask what raises the rent later, and to see that plan in numbers before you sign.
Check 4: read the building's records before you price the flat
With a flat you buy a share of a building, and the building's coming costs are part of the price. The records of the owners' association show them. Ask the seller for:
- The minutes of the owners' meetings of the last three years. They show which repairs were discussed, postponed or decided, and whether owners disagree about them.
- The current budget and the last annual statement. They show the monthly service charge (Hausgeld) and how much of it the owner cannot pass on to the tenant.
- The balance of the maintenance reserve. A small reserve in an old building with the roof or the façade due points to a special levy (Sonderumlage), and a levy that falls due after you become the owner is yours to pay, even if the owners decided it before you bought, unless the purchase contract makes the seller cover it.
- The energy certificate (Energieausweis). It shows the building's energy class, which affects both the rent you can ask and the work the building may need.
Put a figure on what you find. If the minutes record a façade renovation planned in two years and the reserve does not cover it, your share of the gap belongs in the price comparison, the same way a missing kitchen would.
Check 5: get a valuation from someone the sale does not pay
You can run the first four checks yourself. The fifth brings in someone who is not paid out of the price.
- The bank's valuation. A German bank values the property itself before it lends. For a Pfandbrief bank, the mortgage lending value (Beleihungswert) rests on the property's long-term features and may not exceed a market value determined by a recognised method (§ 16 Abs. 2 PfandBG). If the bank's figure comes in below the price, the bank calculates its lending on the lower figure, and you may need more equity. Ask the bank for the figure.
- A valuer of your own. Publicly appointed and sworn valuers are listed by specialism in the directory of the chambers of commerce at svv.ihk.de. A full market value report follows the valuation regulation (ImmoWertV), which uses the comparison, income and cost methods, alone or combined, depending on the property (§ 6 ImmoWertV). Ask for a written quote and for what the report covers, and commission it before the notary date, not after.
- The notary's draft. When the seller is a business and you buy as a private person, the notary should as a rule make the intended text available two weeks before the appointment (§ 17 Abs. 2a BeurkG); with a private seller the rule does not apply, so ask for the draft early. It states the price and what it includes, for example a fitted kitchen. Use that time for the valuation.
What the law protects you from, and what it does not
German law does not set a fair price. A purchase contract is void as contrary to public policy only in extreme cases (§ 138 BGB). The Federal Court of Justice treats a price of roughly double the value, from about 90 percent above it, as a particularly gross disproportion that allows the conclusion that the other side acted in bad faith; in a 2016 judgment it noted that a price about 23 percent above the court expert's value would not reach that mark, and sent the case back because the valuation had not been properly tested (Bundesgerichtshof, 22 April 2016, V ZR 256/14). A smaller gap can still matter when further circumstances point to exploitation, such as pressure to sign at once. Below that, an overpriced purchase is a bad purchase, not an invalid one, unless you were misled: false statements about the rent, the return or the building can give a claim to undo the purchase (§ 123 BGB) or to damages. Resale contracts usually exclude liability for defects, which is why Check 4 matters.
So the checks on this page are your protection. The notary is impartial (§ 14 BNotO) and explains the legal effect of the contract (§ 17 Abs. 1 BeurkG); whether the price is good for you is not the notary's question.
How LDP Group handles the price
LDP Group is paid through a commission that is part of the purchase price, with no separate invoice and no additional broker fee on top. It is a broker licensed under § 34c GewO, with a published track record, and it is not an independent adviser: its income depends on the sale, so this page does not ask you to take its word for a price.
In practice: the bank values the property, a valuer of your choice is welcome, and the notary's draft should reach you two weeks before the appointment (the statutory rule where the seller is a business; with a private seller, ask for it). The client cases show completed purchases with the price, the rent at purchase and the rent planned after the work, photos and floor plans, so you can hold its prices against the market data above. How to check the firm itself is on the page how to check a property investment firm.
Limitations: what this page cannot do
- It cannot value a flat. The checks show whether a price is plausible; a market value for one property needs a valuer who has seen it.
- Committees differ. What a market report contains, what it costs and who receives information from the purchase price collection depend on the federal state and the committee.
- An average hides the flat. A committee's average for a district and building age can be far from the value of one flat with its own floor, light, condition and lease.
- Rules change. The rent brake applies only in designated areas and for a limited period, and the rules for rent increases differ by kind of lease; check the law on the day you sign.
- This page is not legal, tax or valuation advice.
What would change this answer
- A change to §§ 193 to 196 BauGB, or to the state rules on who receives information from the purchase price collection.
- A new Federal Court of Justice ruling on when an overpriced property purchase is void.
- A change to the living area regulation (WoFlV), the valuation regulation (ImmoWertV) or the rules for the mortgage lending value.
Frequently asked questions
How do I know if a German apartment is overpriced?
Divide the price by the living area under the Wohnflächenverordnung and compare it with closing prices for the same district, building age and size in the local valuation committee's market report. Then divide the price by the annual cold rent in the lease, read the owners' meeting minutes and the reserve, and get the bank's valuation or your own valuer's before the notary date.
Can I see what similar flats actually sold for in Germany?
Yes, in summary. Every notarised sale goes into the purchase price collection of the local valuation committee (§ 195 BauGB). Its market report shows average closing prices by area and type of property, and individual anonymised sales are given to applicants with a legitimate interest under the rules of each federal state; valuers use them routinely.
Does the bank's valuation protect me from overpaying?
Partly. The bank values the property before it lends, and for a Pfandbrief bank the mortgage lending value may not exceed the market value. A low figure shows up as less lending or a demand for more equity. But the bank values its security, not your deal, so a price somewhat above the value can still pass.
Can I undo a German property purchase if I paid too much?
Rarely. A notarised purchase is binding. The Federal Court of Justice infers bad faith from the price alone only when it is roughly double the value, from about 90 percent above it; a smaller but marked gap can make the contract void only together with further circumstances, such as being rushed into signing. In V ZR 256/14 the court said a price 23 percent above the court expert's value would not reach the 90 percent mark, but sent the case back because that valuation had not been tested properly. Being misled about the rent or the building is a separate ground.
What is a normal price-to-rent multiple for a German flat?
It depends on the city and the building. Many local valuation committees publish rent multiples (Ertragsfaktoren) for their area, and the price-to-rent study on this site lists the ratio for German cities. Compare the flat's multiple with those, and ask for a reason when it sits well above them.
Sources
- § 193 BauGB, tasks of the valuation committee
- § 195 BauGB, purchase price collection
- § 196 BauGB, standard land values
- § 4 WoFlV, which floor areas count as living area
- § 6 ImmoWertV, choice of the valuation method
- § 16 PfandBG, mortgage lending value
- § 17 BeurkG, draft contract two weeks ahead when a consumer buys from a business
- § 14 BNotO, the notary's duty of impartiality
- § 556d BGB, rent brake
- § 557a BGB, graduated lease
- § 557b BGB, index lease
- § 558 BGB, rent increases in a running tenancy and the cap
- § 566 BGB, a sale does not end the lease
- § 123 BGB, rescission for deceit
- § 138 BGB, contracts contrary to public policy
- Bundesgerichtshof, judgment of 22 April 2016, V ZR 256/14 (text at haufe.de)
- BORIS-D, standard land values of the federal states
- Directory of publicly appointed and sworn valuers of the chambers of commerce
- Price-to-rent ratio 2026, LDP Group study