Find 3 vetted specialist contractors for your modernisation
Compare quotes and save up to 20 %.
How it works
Three steps to a fair building quote
From your enquiry to the right contractor: simple, transparent and free.
Describe your project
Tell us your plans: project type, scope and preferred timeframe.
Receive suitable quotes
We match you with vetted contractors who suit your project. Up to 3 quotes.
Decide with confidence
Compare quotes at your own pace. We can also review them for you on request.
Your benefits
Your modernisation in the right hands.
We connect you with vetted energy modernisation specialists in Berlin and the surrounding area — from heating and heat pumps to insulation and new windows. Compare at your own pace and decide freely.
Energy specialists
Vetted specialist contractors in your areaSpecialist contractors experienced in heating replacement, heat pumps, insulation and windows — including suitable funding through BEG/KfW.
Fair quotes
On average, our customers save up to 20%Comparing several quotes directly helps you avoid unnecessary mark-ups.
No risk
Our service is free and without obligationYou are under no obligation and decide freely which contractor to work with.
Customer feedback
What our customers say
Owners trust us to connect them with reliable contractors for their projects.
Our customers particularly value personal support, transparent processes and reliable results for every renovation.
„The flat was in a condition that would have sent most people running. I could see its potential, but I needed someone to help me bring it out.“
„We bought a period flat everyone advised us against. Today it is exactly the home we always wanted.“
„Today we welcome politicians and VIP guests here. Before, it was an empty commercial space without even a shower.“
Frequently asked questions
Frequently asked questions
Everything you need to know about finding modernisation specialists through us.
KfW funds heating replacement through BEG: a basic grant plus bonuses that together can cover a substantial share of the costs. BAFA provides grants for building envelope improvements such as insulation or windows. Our partner contractors include suitable funding in their quotes.
There is no need to rush. Existing heating systems that work may continue to be used and repaired. The heating law is being reformed in 2026 — the strict 65% renewable energy requirement is being relaxed, with more freedom of choice planned. If replacement is due anyway, an efficient solution with good funding can still be worthwhile.
Often yes — sufficiently large heat emitters and hydraulic balancing are crucial. An air-source heat pump of around 8 kW costs roughly €14,000–22,000 including commissioning, before funding. Our contractors check beforehand whether your building is suitable.
A new triple-glazed window costs roughly €600–1,200 each, including professional installation. Combining improvements — windows, insulation and heating — is often cheaper and attracts better funding than carrying them out individually.
Nothing. Our matching service is free and without obligation. You pay us nothing and make no commitment.
Our partner contractors know the usual programmes and take funding into account in their quotes. A registered energy efficiency expert is usually needed for the formal application and individual renovation roadmap — contractors can advise on this too.
Ready for your modernisation?
Describe your project and we will connect you with suitable specialist contractors, free and without obligation.
Start your enquiry now