Inheritance Wave 2026: Renovation Obligations When Inheriting Property in Erlangen

The demographic reality of 2026 is inevitable: the baby boomer generation is currently in the midst of passing on its assets to the next generation. For heirs in Erlangen, this means not only inheriting a house or apartment-it often also means immediately facing the Building Energy Act (GEG) and its renovation requirements. Whoever accepts the inheritance also assumes responsibility for the building’s energy future. This article explains what obligations apply, what they cost-and when selling is the smarter choice.

The 2026 Inheritance Wave: Figures and Context

Germany is currently experiencing the largest transfer of private wealth in its post-war history. According to the Federal Statistical Office, an estimated 400 billion euros will be inherited annually during the decade 2020-2030-more than half of which is tied up in real estate. In the Nuremberg metropolitan region, of which Erlangen is a science and technology hub, a disproportionately large share of this wealth is concentrated in owner-occupied homes built between 1950 and 1985.

Erlangen is not your average inheritance city: The high proportion of older-generation Siemens employees means that many homes in Bruck, Alterlangen, Frauenaurach, Sieglitzhof, and Tennenlohe were occupied by owners who built up substantial wealth over decades. These homes are often debt-free-but also often energy-inefficient.

What the GEG Prescribes for Inheritance

The Building Energy Act (GEG), in its version valid for 2026, contains clear regulations for cases of property transfer through inheritance:

• Two-year deadline: Within two years of registration in the land registry, the GEG requirements must be met, unless the building already complies with them.
• Affected: Primarily buildings constructed before 1989 with a central heating system (gas, oil) that do not meet current minimum energy efficiency standards.
• Typical mandatory measures: Replacement of the heating system, insulation of the top floor ceiling (unless the attic is accessible), insulation of accessible basement areas and piping.
• Exceptions: Listed buildings may be exempted on a case-by-case basis; hardship provisions are also possible in cases of economic unfeasibility, but must be substantiated to the responsible energy consultant and the authorities.

Market Data 2026: Renovation Costs in Erlangen by Building Age Category

The following table shows typical ranges of renovation costs in Erlangen, based on contractor prices from spring 2026 for an average single-family home with 130 m² of living space.

Building Age Category	Heating System Replacement (€)	Insulation (€)	Windows (€)	Total Renovation Costs (€)
Before 1960 (old building)	18,000-28,000	25,000-45,000	15,000-25,000	58,000-98,000
1960-1975	15,000-24,000	18,000-35,000	10,000-20,000	43,000-79,000
1975-1989	12,000-20,000	12,000-25,000	8,000-15,000	32,000-60,000
1990-2002	10,000-18,000	6,000-15,000	5,000-10,000	21,000-43,000
After 2002	8,000-15,000	0-8,000	0-5,000	8,000-28,000

Source: Erlangen Expert Committee / KfW / BAFA, as of Q4/2025 - data ranges; individual values available upon request.

KfW Grants for Heirs: What Is Available

Heirs have access to the same federal grant programs as other homeowners - with a few special provisions:

The KfW Program 261 (Federal Funding for Energy-Efficient Buildings) supports full renovations to the “Efficiency House” standard with grants of up to €75,000 per residential unit. The program is also available to heirs who plan to live in the house themselves or rent it out. Important: The application must be submitted before construction begins.

The BAFA BEG EM Program (Federal Funding for Efficient Buildings - Individual Measures) specifically supports heating system replacements, insulation measures, and windows with grants ranging from 15% to 65% of eligible costs. For heirs who wish to take advantage of the two-year period under the GEG, BEG EM is often the fastest route.

> The valuation tool from leadmarkt.ch provides an initial estimate of the current market value of the inherited house-the basis for all further decisions-based on data, in just a few minutes.

Community of Heirs and Renovation Decision: When There Are Multiple Heirs

In practice, a community of heirs is more common than a single heir. If two siblings inherit a house in Bruck, they must not only agree on its use-but also on how to handle the GEG obligations.

According to the German Civil Code (BGB), ordinary administrative measures require a majority decision by the co-heirs based on their shares of the inheritance. Urgent maintenance measures may even be carried out by a single co-heir without the consent of the others, and the costs may be reclaimed on a pro-rata basis. GEG renovation obligations are predominantly classified by courts as necessary maintenance measures.

The most important strategies for communities of heirs:

• Provisional transfer: One co-heir takes sole ownership of the house (transfer of title in exchange for a settlement payment) and assumes the renovation obligation. This is a good option if one of the heirs wants to use the house.
• Joint renovation with cost sharing: All co-heirs finance the mandatory measures on a pro-rata basis and then decide whether to rent or sell.
• Immediate sale: The house is sold “as-is”; the renovation needs are reflected in the purchase price. The buyer assumes the renovation obligation.

GModG and the stricter deadlines starting in 2025

In addition to the GEG, the Building Modernization Act (GModG), in its stricter version effective in 2025, has introduced additional requirements that heirs should pay particular attention to:

The GModG establishes a phased minimum efficiency standard for existing residential buildings, which is intended to reach Class D by 2030 and Class C by 2035. For heirs, this means: Anyone who inherits a house in energy class F or G and wants to keep it must not only meet the GEG’s two-year requirement in the short term but also plan a renovation roadmap for the entire decade. This significantly alters the economic calculation-because simply replacing the heating system is not enough in the medium term if the building envelope is not also brought up to an acceptable standard.

On the other hand, this very prospect creates a motivation to buy: Anyone who buys now and knows what lies ahead can approach the renovation in a structured and subsidy-optimized manner. Heirs who sell the house should transparently communicate the GModG obligations in the property listing-this builds trust with buyers and avoids future legal disputes.

Inheritance Tax: When the House Remains Tax-Exempt

Not only the issue of renovation, but also inheritance tax is an important consideration for inherited real estate:

• Family Home Exemption: Children can inherit a home previously occupied by their parents tax-free if they live in it themselves for at least ten years after the inheritance and the living area does not exceed 200 m². For heirs who live or work in Erlangen and actually intend to move into the family home, the Family Home Exemption offers a significant tax advantage.
• Personal Exemption: Children have an inheritance tax exemption of €400,000. For a single-family home in Erlangen valued at €550,000, only the difference (€150,000) would be subject to tax-and even then, only in tax bracket I with a tax rate of 11-15%.
• Ten-Year Retention Period: The family home privilege is retroactively forfeited if the house is sold within ten years of the inheritance. Anyone who intends to live in the house only for a short time and then sells it should check the tax implications in advance.

Local Nuance: Erlangen-Bruck and the Siemens Site

Bruck and Alterlangen are home to a disproportionately high number of single-family homes from the 1960s and 1970s, built by Siemens engineers and employees of the first post-war generation. These homes are often in very good structural condition-with well-maintained gardens and solid construction-but are energy-inefficient. The proximity to the Siemens campus in Erlangen makes these homes particularly attractive to the next generation of Siemens employees: young professionals working on campus today are looking for exactly these kinds of locations. This creates a strong buyer’s market, offering heirs the option of a quick sale at fair prices.

The Friedrich-Alexander University of Erlangen-Nuremberg and the University Hospital, as additional anchor institutions, ensure that buyer demand in Erlangen remains structurally stable-even when interest rates are higher than during the low-interest-rate phase. For heirs looking to sell a property in Erlangen, the starting point is thus significantly better than in many other medium-sized cities in Bavaria.

Selling Instead of Renovating: When It Makes Financial Sense

Selling an inherited house is not a sign of defeat-it is often the economically rational decision. This is especially true when:

• Renovation costs exceed 30% or more of the market value.
• The community of heirs cannot agree on a joint usage strategy.
• None of the heirs wishes to or is able to use the house themselves.
• The speculation period has already expired (the decedent owned the house for more than ten years)-in which case the capital gain from the sale is tax-free for the heirs.

Important for transfers to spouses in the event of inheritance: If the house is inherited by the surviving spouse, the ten-year holding period is considered fulfilled if the decedent used the house themselves. For children, the intention to use the property oneself is considered a tax-exempt factor - a tax advisor should review relevant details on a case-by-case basis.

Energy Consultant as the First Step After Inheriting the Property

Many heirs make the mistake of speaking directly with contractors or real estate agents before having the home’s energy efficiency professionally assessed. A dena-certified energy consultant can provide a complete picture within one or two appointments:

• Current energy performance certificate (energy demand certificate for single-family homes) with energy class rating
• List of mandatory GEG measures with cost estimate
• Funding recommendation (which programs are suitable, which application documents are required)
• Individual Renovation Roadmap (iSFP), which serves as a bonus requirement for phased renovation

The Individual Renovation Roadmap (iSFP) is particularly valuable in this context: Anyone who has an iSFP created and implements measures in the recommended order receives an additional 5% bonus on the BAFA subsidy rate for each subsidized individual measure. For multiple measures spanning several years, this can be significant.

The cost of a dena energy consultant ranges from €800 to €2,500, depending on the building size and scope of work-and is itself eligible for up to 80% funding through BAFA (the “Federal Funding for Energy Consulting for Residential Buildings” program). This means the consultation is practically free of charge.

Conclusion: A clear plan protects against costly mistakes

The wave of inheritances in 2026 will present many families in Erlangen with complex decision-making situations-under time pressure and often during an emotionally stressful period. Those who understand the GEG obligations, realistically assess renovation costs, and review funding options can make an informed choice between the three basic strategies: renovate and keep, renovate and rent, or sell.

Before taking concrete steps, it’s worth checking out the valuation tool from leadmarkt.ch-this way, you’ll know the property’s starting value before factoring in renovation costs or looking for a buyer.

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Created by the my-home.de editorial team in collaboration with regional real estate analysts. Data as of May 2026.