Renovation when buying a house in Berlin: calculate correctly before purchase

When buying a house in need of renovation in Berlin, success is decided before you sign: the purchase price, renovation and incidental costs must add up realistically. The seller must show you an energy performance certificate, certain renovation obligations pass to you as the new owner, and Berlin adds 6 per cent property transfer tax plus notary and land registry costs to the purchase price. This guide shows what to check before buying, how to calculate your budget and which obligations you inherit.

Key points at a glance

• Energy performance certificate required: must be shown no later than the viewing and handed over after the contract is signed (§ 80 GEG)¹
• Renovation obligations transfer: retrofit obligations (top-floor ceiling, old boilers) must be fulfilled within 2 years of ownership changing³
• Berlin purchase costs: 6,0 % property transfer tax plus around 1,5–2 % for notary and land registry⁴
• Calculate purchase price + renovation (roughly 300–2.500 €/sqm in Berlin) + incidental costs + 10–15 % contingency — more for older buildings
• Check the building fabric and quotes before signing the purchase contract — Berlin's older buildings often need substantial renovation

Energy performance certificate: what it shows and what is mandatory

An energy performance certificate is mandatory when selling. Sellers or estate agents must show it no later than the viewing and hand it to you immediately after the contract is signed (§ 80 GEG).¹ Mandatory information is also required in the property advert — certificate type, final energy demand or consumption, main energy source, year of construction and energy efficiency class (§ 87 GEG); breaches can attract fines of up to 10.000 euros.² Pay attention to the type: a demand-based certificate is based on a technical analysis of the building and gives a better indication of renovation needs than a consumption-based certificate, which depends on previous occupants' heating behaviour.

Which renovation obligations do I inherit as a buyer?

With the purchase, you take on certain obligations under the Buildings Energy Act. The retrofit obligations — insulating the top-floor ceiling (§ 47 GEG) and decommissioning boilers more than 30 years old (§ 72 GEG)⁵ — must be fulfilled within two years of the transfer of ownership.³ Important: owner-occupied one- and two-family homes are partly exempt if the previous owner already lived in the house on 1 February 2002 (§ 73 GEG) — the 2-year deadline applies particularly on ownership changes and to larger houses. Have the specific extent checked before buying so you know the subsequent costs. Our guide shows which measures make sense: Energy refurbishment in Berlin.

Calculating purchase price, renovation and incidental costs realistically

Do not calculate just the purchase price. In Berlin, 6,0 per cent property transfer tax is added — 30.000 euros on a 500.000-euro purchase — plus around 1,5 to 2 per cent for notary and land registry.⁴ Add renovation costs according to scope (roughly 300 to 2.500 euros per square metre in Berlin) and a contingency of 10 to 15 per cent, or more for older buildings. Rule of thumb: for a property in serious need of renovation, renovation costs can match or exceed the purchase price — so the renovation estimate belongs before the purchase contract, not after it. For an initial guide, use the Renovation cost calculator.

Identify deferred maintenance — before signing

The energy performance certificate says nothing about damage to the roof, façade, pipes or structure. This is particularly relevant in Berlin: over half of buildings in the inner city were built before 1920 (around 66 per cent in Kreuzberg), with corresponding risks relating to building condition and hazardous materials.⁶ An independent assessment before signing the purchase contract reveals hidden defects and deferred maintenance that can quickly change how the purchase price looks. If you already have a renovation quote, a quote review can reveal inflated prices and missing items — our guide covers the details of Berlin's older building fabric: Renovating older buildings in Berlin.

Frequently asked questions

Must the seller show me an energy performance certificate when I buy a house?

Yes. Under § 80 GEG, the energy performance certificate must be shown no later than the viewing and handed to the buyer immediately after the contract is signed. Property adverts must also include information such as the energy source, year of construction and efficiency class (§ 87 GEG). Breaches can attract fines of up to 10.000 euros.

Do I inherit renovation obligations as a buyer?

Yes, in part. You must fulfil the GEG retrofit obligations — insulating the top-floor ceiling and decommissioning boilers more than 30 years old — within two years of the transfer of ownership. Owner-occupied one- and two-family homes are partly exempt; have the specific extent checked before buying.

How much is property transfer tax in Berlin?

6,0 per cent of the purchase price (as of 2026). On a 500.000-euro purchase, that is 30.000 euros. Notary and land registry costs of around 1,5 to 2 per cent are added. Allow for these purchase costs in addition to the purchase price and renovation costs.

Why should I commission an assessment before the purchase contract?

Because hidden defects and deferred maintenance can quickly change the picture on the purchase price. An independent assessment before signing reveals damage to the roof, façade, pipes or structure that the energy performance certificate does not show. This allows you to calculate whether the purchase price plus renovation remains realistic in Berlin's market — older buildings often need substantial renovation.

How do I calculate purchase price plus renovation realistically?

Add renovation costs according to scope (roughly 300 to 2.500 euros per square metre in Berlin), 6 per cent property transfer tax, notary and land registry costs, plus a contingency of 10 to 15 per cent (more for older buildings) to the purchase price. For a property needing renovation, the renovation can match or exceed the purchase price — so the estimate belongs before the purchase contract.

To carry out the work, we can introduce you to vetted specialist firms in Berlin. If you have a quote, we can review it independently on request through our quote review.

Sources

1. § 80 GEG, issuing and using energy performance certificates (presentation at viewing, handover to buyer)
2. § 87 GEG, mandatory information in property adverts (energy source, construction year, efficiency class); fines up to 10.000 €
3. BBSR, GEG information portal: retrofit obligations (§ 47 top-floor ceiling, § 72 boilers) — 2 years after ownership changes, § 73 exception for owner-occupiers
4. Berlin Senate Department for Finance, Berlin property transfer tax: 6,0 % of purchase price
5. § 72 GEG, prohibition on operating old boilers (more than 30 years old)
6. Berlin Environmental Atlas (Senate Department), age of residential buildings — high proportion of older buildings in the inner city