Buying a Tenanted Apartment in Berlin: Discount, Rules, Reality

The legal principle that shapes everything

In German residential law, “purchase does not break lease” (Kauf bricht nicht Miete, § 566 BGB) is not a slogan, it is the mechanism that decides what you are actually buying. When you take over a tenanted flat, you step into the landlord’s position exactly as the previous owner left it. The rent stays the rent. The deposit stays the deposit. Any arrangement the previous owner made with the tenant, formal or informal, becomes yours to inherit along with the keys. I start almost every client conversation about a tenanted flat here, because most of the surprises that surface later trace back to this one paragraph of law.

Why the discount exists

Tenanted apartments in Berlin often sell for noticeably less than the same flat would fetch with vacant possession. The gap is commonly cited at around 20 to 30 percent, though it moves with the rent level and the tenant’s personal circumstances. A flat let at a rent well below market, with a tenant who has lived there for decades, tends to sit toward the wider end of that range. A flat where the rent already sits close to market tends to sit toward the narrower end. In practice, the discount is the market’s estimate of how long you will have to wait, and how much friction you will absorb, before you can do anything with the flat beyond collecting rent.

If you plan to move in yourself

This is the point where I ask clients to be honest about their own timeline. Buying a tenanted flat with the intention of living in it yourself is legally possible, but it almost always means filing an own-use termination (Eigenbedarfskündigung). The statutory notice period runs from three to nine months, scaled to how long the tenant has already occupied the flat. The termination also has to reflect a genuine need, not a preference, and Berlin courts scrutinise these cases closely. I have watched purchases stall for well over a year because the stated reason did not hold up under review. If moving in soon is the actual goal, a tenanted flat is rarely the right vehicle, and it is worth saying so plainly before you commit.

Converted condominiums carry an extra waiting period

Many tenanted flats on the Berlin market sit in buildings that were originally let as a whole and only later converted into individual condominiums. For these, Berlin applies a blocking period (Kündigungssperrfrist) of up to ten years from the conversion before an own-use termination is even possible. This detail is easy to miss on a first read of a sales pack, and it changes the entire calculation for anyone who hoped to occupy the flat within a normal timeframe. I check the conversion date on every tenanted listing before price ever enters the discussion.

What the in-place rent actually tells you

Older leases in Berlin can carry rents well below current market levels, because increases are bound to the local rent index (Mietspiegel) and move in capped steps rather than jumping to market rate in one go. A low in-place rent means a lower yield today, but it usually widens the discount on the purchase price, since any future buyer is pricing in the same slow path toward market rent. Before I model a return for a client, I work from the actual lease terms rather than an assumption, and the rental-yield calculator is where that conversation usually starts, comparing the current rent against a realistic post-transition figure.

Due diligence, in the order I actually do it

Step	What I am checking
Lease agreement	Rent, indexation clause, any side letters
Deposit	Confirmation it will transfer to you, not remain with the seller
Arrears	Any unpaid rent or ongoing disputes with the tenant
Rent-cap history	Adjustments made during the Mietendeckel period, and whether they were correctly reversed

None of this shows up in a floor plan or a set of photographs. It comes from reading the lease file itself, line by line, before a client has a chance to get attached to a listing.

Who this actually suits

For an investor who is comfortable holding through a slow transition, a tenanted flat bought at a fair discount, with the rent and the path to market rent both understood in advance, can be a genuinely attractive position. For someone who wants to move in soon, it is usually the wrong purchase, unless the current tenant has already given notice or is close to leaving of their own accord. I say this to clients directly, because the same discount that makes a flat look attractive on a spreadsheet is also a rough measure of how long you will be waiting. If some of this still feels abstract, the FAQ answers the questions I hear most often on tenanted purchases, and the current listings show what is on the market right now.

A short conversation before you make an offer is usually enough to tell whether a tenanted flat fits what you actually need. A consultation is where that starts, and the fee for that first hour is credited in full against a later buyer-representation engagement.