How we arrive at this price
Happy Builder developed its own methodology so every client can quickly get a realistic orientation of how much a renovation may cost. To show how this works, we took a real example apartment and used our public renovation calculator to generate an offer.
The offer is number S02234, issued on 18.05.2026. It is prepared for an apartment with an area of 60 m². The calculator assumes that 5 m² are bathroom, and the remaining 55 m² are rooms for floors, walls, and ceilings.
What assumptions the calculator makes
The unit prices are real prices for the relevant measurement units: m², m, or unit. The assumption is in the quantities. To give the client quick orientation, the calculator does not require the exact size of every wall, ceiling, corridor, and bathroom. Instead, it uses indicative quantities for this type of property.
In this offer, for example, the walls are calculated as 121 m², the ceilings as 55 m², the floors outside the bathroom as 55 m², and the bathroom is a package item. This is useful enough for an initial financial frame, but it does not replace a precise offer based on real measurements.
What is included in the example offer
The offer is for services: labor, coordination, and quality control. The prices below exclude VAT and are taken from the generated offer.
| Group | Service | Quantity | Unit price | Total |
|---|---|---|---|---|
| Floors | Porcelain tile installation on floor | 5.00 m² | 45.00 € | 225.00 € |
| Floors | Porcelain tile skirting installation | 5.00 m | 9.50 € | 47.50 € |
| Floors | Laminate flooring installation | 50.00 m² | 6.50 € | 325.00 € |
| Floors | Laminate skirting installation (PVC - classic) | 28.00 m | 5.50 € | 154.00 € |
| Walls | Primer before fine plastering compound on walls | 121.00 m² | 1.90 € | 229.90 € |
| Walls | Fine plastering compound (Sheetrock) on walls | 121.00 m² | 11.00 € | 1331.00 € |
| Walls | Machine sanding of walls | 121.00 m² | 1.90 € | 229.90 € |
| Walls | Primer before painting on walls | 121.00 m² | 1.90 € | 229.90 € |
| Walls | Latex paint on walls | 121.00 m² | 4.50 € | 544.50 € |
| Ceilings | Primer before fine plastering compound on ceiling | 55.00 m² | 1.90 € | 104.50 € |
| Ceilings | Fine plastering compound (Sheetrock) on ceiling | 55.00 m² | 11.00 € | 605.00 € |
| Ceilings | Machine sanding of ceiling | 55.00 m² | 1.90 € | 104.50 € |
| Ceilings | Primer before painting on ceiling | 55.00 m² | 1.90 € | 104.50 € |
| Ceilings | Latex paint on ceiling | 55.00 m² | 4.50 € | 247.50 € |
| Bathroom | Bathroom package price | 1.00 unit | 3379.00 € | 3379.00 € |
What the bathroom package includes
The bathroom package in this offer is one item for 3379.00 €. The description includes: deep-penetrating primer on walls and ceiling, plastering and wall leveling, concrete-contact primer on the floor, screed and floor slope formation, waterproofing with waterproofing tapes in the corners, porcelain tile installation on the floor with grouting, and porcelain tile installation on the walls with grouting.
Screenshots from the offer
Below are the first three pages of the real offer generated by the calculator. They show the parameters, items, quantities, and unit prices on which the calculation is based.
What is not included
Materials are not included in this offer. This matters because tiles, porcelain tiles, laminate, skirting boards, sanitary fixtures, mixers, doors, light fixtures, sockets, and switches depend on the client’s choice. Depending on the condition of the property, additional services may also be necessary, such as electrical installation, plumbing installation, demolition, or other activities that are not part of this example.
The correct way to read the amount is therefore: 7861.70 € excluding VAT for the services included in the example base offer, with the stated parameters and the indicative quantities used.
Check your apartment
If you want to see how much your renovation may cost, enter the parameters of your home in the calculator. You will receive a quick indicative value based on real unit prices and clear quantity assumptions.
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