Metodologia

Jak obliczamy kosztorysy

Każdy kosztorys tworzony jest na podstawie wymiarów Twoich pomieszczeń, stanu powierzchni, wyboru materiałów i regionalnych stawek robocizny. Oto dokładnie, jak to działa.

The estimation formula

Room total = (
Materials
+ Labor
+ Surface preparation
+ Supporting materials
) × Regional multiplier
Each component is calculated as a range (min–max), so the final estimate is also a range. This reflects real-world variability in contractor pricing and material availability.

Area calculations

Floor areawidth × length
Ceiling areawidth × length
Wall area2 × (width + length) × height − windows − doors
Window deduction1.5 m² per window
Door deduction2.0 m² per door

Material costs by quality tier

EconomyBasic, functional, widely available
StandardMid-range, good quality-to-cost ratio
PremiumHigh-end, luxury finishes, branded products
Wall paint — Economy12–18 PLN/m²
Wall paint — Standard22–35 PLN/m²
Wall paint — Premium40–65 PLN/m²
Floor tile — Economy40–60 PLN/m²
Floor tile — Standard75–110 PLN/m²
Floor tile — Premium140–220 PLN/m²
Laminate — Economy22–32 PLN/m²
Stretch ceiling — Std90–130 PLN/m²

Labor rates (2024 Polish market)

Wall painting22–38 PLN/m²
Wallpaper32–52 PLN/m²
Decorative plaster48–78 PLN/m²
Laminate flooring22–38 PLN/m²
Tile installation55–95 PLN/m²
Vinyl flooring18–32 PLN/m²
Ceiling paint18–32 PLN/m²
Stretch ceiling75–140 PLN/m²
Drywall ceiling55–90 PLN/m²
Labor is priced per m² of surface area and does not change with quality tier.

Regional pricing adjustments

Warsaw×1.20 (+20%)
Kraków×1.10 (+10%)
Wrocław×1.10 (+10%)
Gdańsk×1.05 (+5%)
Poznań×1.05 (+5%)
Other city×1.00 (baseline)

Supporting materials

Consumables (adhesives, grout, primer, tape, etc.) are estimated at 10–15% of total material cost.

What is NOT included

✕Structural work — Load-bearing walls, foundations
✕Electrical — Rewiring, new circuits
✕Plumbing — Pipe replacement, boiler
✕Design fees — Interior designer or architect
✕Permits — Planning permission, building control
✕Furniture & appliances — Kitchens, bathrooms, wardrobes
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