Old buildings reimagined
Renovation & Modernization – Contemporary Upgrades for Your Home
Renovation and modernization transform existing properties into sustainable living spaces. While renovations repair structural damage and protect the fabric of the building, modernizations increase comfort, safety, and energy efficiency. As a specialist company, we develop tailor-made concepts—from the renovation of historic buildings in line with conservation guidelines to smart building automation.
Our portfolio includes:
Building fabric renovation: Professional repair of moisture damage, wood preservation, and structural problems
Energy-efficient modernization: Insulation of the building envelope, window replacement, heating optimization
Technical upgrade: Integration of smart home systems and barrier-free solutions
Listed building renovations: Sensitive restoration in accordance with historical specifications
Every project begins with a building diagnosis using thermography and moisture measurement.
- Up to 25% higher property value after energy-efficient modernization
cost reduction
Heating cost savings of 30-60% through insulation measureslegal certainty
Compliance with current GEG (Building Energy Act) and EnEV requirements
funding information
Take advantage of government subsidy programs: Up to 50% subsidy for KfW efficiency house renovations. We take care of the application process and monitor implementation in accordance with subsidy guidelines.
Questions and answers
What is the average cost of energy-efficient renovation?
The costs of energy-efficient renovation range from €15,000 (partial renovation) to €100,000+ (complete renovation to KfW Efficiency House standard). Decisive factors:
Building size and condition (old building vs. new building)
Scope of measures (insulation, windows, heating)
Regional material and labor costs
Government subsidies can cover up to 50% of the costs.
Which renovation measures are most effective for saving energy?
The top three measures for maximum energy efficiency:
Facade insulation (up to 30% savings on heating costs)
Heating system modernization (condensing boiler technology or heat pump)
Window replacement with triple glazing
*According to the German Federal Association for Energy Efficiency, 85% of renovations combine these measures. A building thermography identifies your specific weak points in advance.*
Do I need a building permit for facade renovations?
In most federal states, facade renovations do not require approval, except in the following cases:
Listed buildings
Changes to the building volume
Residential areas with design regulations
In Darmstadt, for example, you need a special permit in the listed Mathildenhöhe district. We will check the local regulations for you free of charge.
How long does it take to completely renovate a single-family home?
The time frame varies depending on the scope:
Partial energy modernization: 4–8 weeks
Complete renovation with remodeling: 12–20 weeks
Listed building renovation: 6–12 months
*By carrying out work in parallel and using digital construction scheduling, we reduce renovation projects by an average of 25%. We can complete a 150 m² house in standard design in 14 weeks.*
Can I apply for subsidies even after the renovation has begun?
No! Funding applications must be submitted before commissioning. Important deadlines:
KfW applications: Before awarding contracts
Tax reductions (Section 35c of the German Income Tax Act): Before invoicing
BAFA subsidies: Before starting measures
*We support you in submitting legally compliant applications: 92% of our KfW applications are approved. Late submission may result in the loss of the entire subsidy.*
