Lidstein
The short answer: For a complete full renovation in 2026, expect roughly €600 to €1,400 per m² of living space — depending on condition, year of construction and specification. A 140 m² detached house therefore falls roughly between €85,000 and €195,000. Subsidies can reduce the burden considerably: the heating replacement alone is subsidised by up to 70 %. No figure becomes reliable until the building has been inspected.
What makes up the cost?
A full renovation consists of three large packages of work — the same structure by which it is planned and built (explained in detail here): building services, envelope and interior fit-out. The ranges below are benchmarks from our project practice for existing buildings in Baden-Württemberg:
| Package of work | Typical scope | Benchmark |
|---|---|---|
| Building services | New wiring, water and waste pipes, heating system (a heat pump, for example) | €150–350/m² |
| Building envelope | Roof, windows, external doors, façade insulation | €200–450/m² |
| Interior fit-out | Floors, bathrooms, non-load-bearing walls, doors, decorating | €250–600/m² |
Benchmarks from Lidstein project practice, 2026; comparable ranges are published by co2online and the German consumer advice centre. Special cases — contaminants, structural work, listed buildings — can exceed these ranges.
What drives the cost most?
- Condition of the building services: Fabric-sheathed wiring, lead pipes or a boiler from the nineties almost always means: all of it out. That affects every wall — which is why services are the most frequent cost driver.
- Bathrooms: A fully renovated bathroom typically costs between €15,000 and €40,000, depending on size and specification.
- Surprises in the existing fabric: Damp cellars, rotten joists, asbestos or dry rot often only appear after the strip-out. A contingency of 10 to 15 % of the build cost is a necessity, not a luxury.
- Specification level: The price gap between DIY-store quality and manufacturer quality is smaller than most people assume — once the middleman is removed (more on that below).
What subsidies are available in 2026?
- Heating replacement (KfW, programme 458): 30 % base subsidy, plus a 20 % speed bonus for replacing old oil or gas boilers, plus a 30 % income bonus (taxable household income up to €40,000) — capped at 70 % of a maximum €30,000 in eligible costs for the first dwelling unit — up to €21,000 in grants.
- Individual envelope measures (BAFA/BEG EM): 15 % grant for insulation, windows and doors, plus a 5 % bonus with an individual renovation roadmap (iSFP).
- Tax relief under § 35c of the German Income Tax Act: As an alternative to the grants — 20 % of renovation costs (up to €40,000) deductible from tax over three years.
As at early 2026; conditions change regularly — check the current terms at kfw.de and bafa.de. Grants and tax relief cannot be combined for the same measure.
How does Lidstein keep costs in check?
Three levers make the difference on our projects in Reutlingen and the Stuttgart region:
- Materials straight from the manufacturer: We source materials, doors, flooring, furniture and kitchens without a middleman. The wholesaler's margin stays in your budget — at equal or better quality.
- In-house trades, one chain of dates: No idle time between subcontractors, no duplicated call-outs (why the procurement model matters so much).
- An honest first estimate: A quote that prices in surprises instead of deferring them into variations.
Frequently asked questions
What does a full renovation cost per square metre?
As a 2026 benchmark: roughly €600 to €1,400 per m² of living space for a complete full renovation — depending on condition, year of construction, specification and region.
Is a full renovation cheaper than a new build?
Usually yes: shell construction, site servicing and land costs fall away, and the existing fabric — foundations, load-bearing walls, often the roof structure — is reused. Where the fabric is very poor, demolition and a new build can still be more economical; only an inspection will show which.
How long does a full renovation take?
For a detached house, four to eight months is realistic depending on scope — the sequence of phases is explained in our article on the renovation process.
Does Lidstein provide a free quote?
The initial assessment after an inspection is without obligation. Tell us the property, location and rough scope — by WhatsApp, phone or e-mail.
What will your project cost?
Send us the key facts about your property — you will get a realistic first assessment instead of a teaser figure.