A Period Building Without the Nightmare — The Renovation Code
The exact order of your renovation — so you only pay for what is really necessary and never do anything twice.
Request for free ↓- The three measures almost everyone tackles too early — and the condition under which they can be brought forward after all
- The roadmap in ten steps, each with a clear “done only when”
- Ten technical terms from contractors’ quotes, each explained in one sentence
- Six questions that show you where your project really stands
PDF · 13 pages · printable · in German
Where should we send it?
You will receive an email with the link. One click, and the file is yours.
Most expensive mistakes are not material mistakes. They are sequencing mistakes.
The new heating system is installed before anyone knew how much heat the house will still need after the renovation — and it is two sizes too big. The windows are airtight before the roof was. The plaster is fresh before the wiring was laid, and gets chiselled open again.
None of these mistakes comes from carelessness. They happen because nobody dares to wait. The guide gives you the order in which to make your decisions — so that each step builds on the previous one instead of tearing it open again.
What it is not: a design or a commitment on costs. Every building has its own fabric. The roadmap tells you in which order to decide — not what will come out of your house in the end.
Please note: the guide itself is written in German.
The guide tells you what comes when. The video course explains it in detail — and what you can save yourself.
With the guide you know the order. Then the quotes arrive, and every contractor thinks their trade matters most. What is actually required and what is just a sales pitch is not in the guide. The video course “The Renovation Roadmap” goes through the ten steps on video in lesson 1 — and in thirteen further lessons it goes where the guide stops. Explained as if at the kitchen table. Like the guide, it is in German.
If the heating has to come first, start with the heating surfaces: larger radiators and hydraulic balancing lower the flow temperature.
How a simple radiator swap lowers the flow temperature — explained on video, physics, not panic.
Ten terms that appear in almost every quote, translated — so you notice when someone evades the question.
Noticing is one thing, answering another: the one counter-question that puts any adviser in their place.
Measure, calculate, decide: the steps you cannot see on the house — and that are skipped for exactly that reason.
Which calculation document to demand from your adviser instead of accepting lump-sum estimates — to protect your house from faulty planning and building damage.
Step 05: check subsidies — before the first signature.
The formal mistake before the signature that can cost you your entire subsidy.
After the course, not everything seems urgent at once. You know what can wait and have the counter-question ready — so that you only pay for what is really necessary.
The Renovation Roadmap
In which order to renovate — and what you can safely save yourself.
197 € 49 €
one-off, incl. VAT
Introductory price until 31 Dec 2026
Afterwards regular price: 197 € one-off
Pre-sale · available from 15 Oct 2026
To the video course — 49 €
Thomas Tergan, Sustainabim
Engineering office for the renovation, digital and energy upgrading and further development of existing buildings, Dresden. What is written here does not come from textbooks but from buildings we have surveyed, opened up and repaired — including the places where it got uncomfortable.
Nothing happens without your click in the email. That way nobody ends up on the list who didn’t ask — and we know the address is correct.
A few short emails to get you started, then a case from practice whenever there is something to say — with tips and suitable offers. The Baupost newsletter is written in German.
The unsubscribe link is under every email and works immediately, no questions asked. We never pass on your address.
A Period Building Without the Nightmare — The Renovation Code
The exact order of your renovation — so you only pay for what is really necessary and never do anything twice.