About the estimates
Public references provide budget guidance. Detailed options and large buildings need professional validation; prices are not guaranteed.
Method
Each category has a cost rule: a fixed amount (set-up, site) plus a price per unit (m², m, item, kWp), in low / central / high versions. We then apply finish level, options, a regional factor by postcode, building age and access.
Confidence
Every “I don't know” or missing regional data widens the range and lowers confidence. A price is always shown. Confidence reflects answer completeness, not a price guarantee; option allowances still need confirmation.
References used
| Kitchen | Public references for this category: truto.ch – Prix cuisine rénovation · offrendo.ch – Guides de prix 2026. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Bathroom / WC | Public references for this category: fragmara.ch – Sanitärkosten Schweiz 2025 · baunex.ch – Rechner Badrenovation. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Flooring | Public references for this category: offrendo.ch – Guides de prix 2026 · handwerker-kosten.ch – Richtpreise 2026. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Interior painting | Public references for this category: handwerkero.ch – Maler Kosten 2026 · ofri.ch – Kosten · daibau.ch – Baukostenrechner. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Windows | Public references for this category: bau26.ch – Fenster ersetzen · helply.ch – Kostenübersichten 2026. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Roof | Public references for this category: helply.ch – Kostenübersichten 2026 · lebau.ch – Dachsanierung. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Facade & insulation | Public references for this category: helply.ch – Kostenübersichten 2026 · daibau.ch – Baukostenrechner. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Heat pump | Public references for this category: EnergieSchweiz – coûts de référence pompes à chaleur · ecoen.ch – Wärmepumpe / Batteriespeicher. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Solar PV | Public references for this category: helply.ch – Kostenübersichten 2026. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Home battery | Public references for this category: freestate.ch – Stromspeicher 2026 (Swissolar) · ecoen.ch – Wärmepumpe / Batteriespeicher. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Solar thermal | Public references for this category: aroundhome.ch – Solarthermie Preise. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Terrace | Public references for this category: daibau.ch – Baukostenrechner · ofri.ch – Kosten. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Fence | Public references for this category: handwerker-kosten.ch – Richtpreise 2026. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Stairwell and entrance | Public references for this category: compero.ch – Treppenhaus streichen. Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
| Lift / elevator | Public references for this category: KONE / Casafair – ascenseur en rattrapage (ordre de grandeur). Detailed options are indicative allowances, not individually verified tariffs. | Switzerland (broad national reference) | ch-2026.10 · 2026-10-14 |
Indicative, non-binding online estimate. To be confirmed by a professional; an on-site visit may be needed for a priced quote.