For renovators and old-building owners
Renovation: a surprise behind every wall. A plan in front of each.
No project breaks budgets as reliably as an old building: damp basements, decayed wiring, hazardous finds — the one plannable thing is that something intervenes. BOB plans the uncertainty in: measures as ranges, a 15–20% reserve, subsidies as their own sources.
Where it breaks
The building lies
Plans from 1962, three conversions later: nobody knows what sits behind plaster and boards — until it is open and costs money.
Measures depend on each other
Heating sized before insulation, bathroom tiled before pipes: wrong order is the most expensive renovation mistake.
Subsidies change the maths
German BEG, KfW, state programmes: grants change what pays off — but they come with deadlines, evidence and conditions.
How BOB helps
A renovation template by measures
Instead of 30 new-build trades: measure packages like roof, façade, windows, heating, bathroom — each with its own item, budget and contract status.
A 15–20% reserve, built in
BOB recommends a higher reserve for renovations than for new builds — and runs it as a non-deletable item. The hazardous find becomes a transfer, not a construction stop.
Subsidies as funding sources
Grants and subsidised loans run as their own sources with status: applied, approved, paid out. You see coverage with and without them — in case a decision goes differently.
Collect documents as they come
Trade invoice, DIY store receipt, material delivery: everything by photo into the inbox. With many small amounts, automatic matching is worth gold.
How to start: renovation calculator with your measures → turn the range into a cost plan → confirm the reserve, add subsidies as sources. Then collect quotes measure by measure.
From a bathroom to a full renovation. Below about €10,000 a sheet of paper often suffices; once several trades, a subsidy or a loan are involved, the structure pays off — at the latest when the second surprise nibbles the reserve.
No — applications run with KfW, BAFA or the state. BOB manages what follows: grants as funding sources with status, and the documents you need as evidence, collected cleanly per measure and exportable.
Rule of thumb: envelope before systems before surfaces. An energy consultant’s roadmap adds structure and, in Germany, extra subsidy points. In BOB you set up measures with time ranges — the liquidity view shows whether the order works financially too.
The classic: move into the ground floor, renovate upstairs. BOB is fine with that — measures have their own time ranges and budgets, and the monthly line shows what the double load of rent/rate plus renovation really means.