An Altbau flat refers to a flat in a building that was usually built before the Second World War, often between 1870 and 1930. This type of flat is particularly common and highly sought-after in major German cities such as Berlin, Munich and Hamburg. The charm and unique architecture of old buildings attract many people, as they are characterised by a variety of distinctive features.
High ceilings
A striking feature of flats in old buildings are the high ceilings, which are often over three metres high. These give the rooms a spacious, airy atmosphere that is often lacking in modern new builds. The impressive room height also makes it possible to utilise creative design options, such as installing large works of art or floor-to-ceiling bookshelves.
Large windows
The windows in old flats are often large and allow plenty of daylight into the rooms. These large windows not only create bright and inviting rooms, but also reinforce the feeling of space and openness, which is supported by the high ceilings. The windows are often surrounded by original wooden frames, which adds to the historic charm of the flat.
Stucco and decorations
Many flats in old buildings have ornate stucco decorations on the ceilings or walls. These decorative elements, which are often handmade, reflect the architecture and taste of bygone eras and contribute significantly to the unique charm of an old flat. Stucco ornaments can be found in a variety of styles, from delicate floral patterns to simple geometric shapes.
Wooden floors
Originally preserved wooden floors such as parquet or floorboards are another typical feature of old flats. These floors often have a long service life and lend the rooms warmth and cosiness. Herringbone parquet or old floorboards are particularly popular, as they are characterised by their patina and historic character.
Double doors and hinged doors
Flats in older buildings often have double doors or large double doors that are positioned between the individual rooms. These doors not only allow for a flexible room layout, but also contribute to the elegant appearance of the flats. They are often made of wood and have ornate fittings that emphasise the historic style of the building.
Thick walls
The walls of old buildings are usually thicker than in modern new buildings. This not only provides good thermal insulation, but also excellent soundproofing. In a flat in an old building, you generally hear the neighbours less, which makes living pleasantly quiet - especially in inner-city locations.
Spacious room layout
Flats in older buildings are known for their spacious and sometimes unconventional room layouts. Many flats have large, interconnecting rooms that can be used flexibly. This spaciousness makes it possible to customise the living space, be it for a studio, a large living room or a separate work area.
Challenges of living in old flats
Despite their charm and architectural advantages, flats in old buildings also come with some challenges. Due to the high ceilings, for example, heating costs can be higher as it takes more energy to heat the rooms. In addition, many old buildings are not equipped with a lift, which can be a disadvantage on the upper floors. A lack of light, increased renovation requirements and possible refurbishment costs are further factors that need to be taken into account. All of these aspects can influence the sales value.

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Do you want to sell an old flat?
If you want to sell your old flat, it is crucial to know the exact value of the property. With us, you have two options for determining the value of your period property:
1. Online evaluation
With our Online evaluation you can enter the most important data and individual features of your property step by step. Based on relevant market data, current comparative data and the supply and demand situation, an initial guide value for your property is calculated. You receive an immediate result - simple and straightforward. Carry out an online valuation now!
2. On-site evaluation
An inspection is essential for an accurate market price assessment. Our experienced brokers analyse your old flat directly on site and, on request, determine a realistic sales price that takes into account the special features and condition of the flat.

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What documents are required for the sale?
In order to make the process of selling your old flat a smooth one, you will need some important documents. These include
- Land register extract (not older than 3 months)
- Proof of insurance
- Parcel map
- Official site plan
- Information on contaminated sites
- Information on building encumbrances
- Property tax assessment notice for the current year
- Dimensioned floor plan of the flat including each room with measurements, surveyor's stamp
- Overview of modernisations for the last 10 years (important: original receipts and invoices)
- Current energy certificate and maintenance logs of the gas boiler in the case of gas central heating or central heating
- Building permitsif floor plans have been changed (statics, test statics, fire protection, environmental protection authorisations)
- Minutes of the owners' meetings of the last 3 years and the resolution book
If the flat is rented out, an additional Proof of rental income and a Copy of the tenancy agreement required.
With these documents and our support, nothing stands in the way of a successful sale of your old flat!