Rooftop restaurants have higher costs than regular restaurants - think rent, heating and logistics. This means you need to approach your cost price calculation differently. You need to account not only for ingredients, but also for the extra operational costs that come with a rooftop location.
The unique cost factors of rooftop restaurants
A rooftop restaurant has specific costs that you need to include in your cost price calculation. These extra costs can significantly affect your food cost percentage if you don't calculate them properly.
⚠️ Note:
Rooftop restaurants often have 20-30% higher operational costs than street-level restaurants. You need to factor this into your menu prices.
Extra costs you need to include
In addition to your normal ingredient costs, rooftop restaurants have extra expenses:
- Logistics costs: Everything needs to go up - deliveries, waste, staff
- Energy costs: Heating/cooling at height costs more energy
- Rent costs: Rooftop locations are often more expensive per m²
- Weather-resistant facilities: Covers, windscreens, heating
- Seasonality: Lower revenue in winter, same fixed costs
Calculate your adjusted food cost percentage
For rooftop restaurants, a food cost of 25-30% is often more realistic than the standard 28-35%. You have higher fixed costs that you need to compensate for.
💡 Example:
Pasta carbonara in a rooftop restaurant:
- Ingredients: €7.50
- Extra operational costs per portion: €2.50
- Total cost price: €10.00
- Selling price (at 25% food cost): €40.00 excl. VAT
- Menu price: €43.60 incl. 9% VAT
Seasonal cost price adjustment
Rooftop restaurants often have a seasonal pattern. In winter you earn less, but your fixed costs remain the same. That's why you need to make enough margin during peak season.
💡 Example seasonal calculation:
If you do 40% less revenue in winter:
- Summer months: 28% food cost is acceptable
- Winter months: 22% food cost needed to break even for the year
- Or: winter prices 15-20% higher than summer prices
Weather resistance in your cost price
Bad weather means fewer guests, but you've already done your mise-en-place. Therefore, calculate with a waste percentage of 8-12% instead of the standard 5-8%.
⚠️ Note:
Always check the weather forecast when ordering. A rainy weekend could mean you get 50% fewer guests than expected.
Pass through logistics costs
Everything that needs to go to your rooftop costs extra time and energy. Calculate on average €0.50 to €1.00 extra logistics costs per dish, depending on how high you are and how easy access is.
How do you calculate the cost price for a rooftop restaurant?
Calculate your basic ingredient costs
Add up all ingredients as you normally would: main ingredient, garnish, sauces, oil, butter. This is your standard food cost calculation without the rooftop-specific surcharges.
Add the rooftop-specific costs
Calculate per dish €0.50-€1.00 extra for logistics, €0.30-€0.50 for extra energy, and 8-12% waste instead of 5-8%. These costs vary by location and season.
Adjust your food cost percentage
Aim for 25-30% food cost instead of 28-35%. Due to higher fixed costs, you need more margin on your food to remain profitable, especially in the winter season.
✨ Pro tip
Use an app like KitchenNmbrs to track your rooftop-specific costs per dish. This way you can immediately see if your prices match your actual costs.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Why is food cost lower at rooftop restaurants?
Because you have higher fixed costs (rent, energy, logistics), you need to make more margin on your food. A food cost of 25-30% is more realistic than 30-35%.
How do I factor seasonality into my cost price?
Calculate your annual revenue and divide it over 12 months. If you earn 40% less in winter, you need to run lower food cost in summer or charge higher prices.
What are typical extra costs per dish on a rooftop?
Calculate on average €1.00-€2.00 extra per dish for logistics, energy and weather-related waste. This varies by location and season.
Should I charge different prices for summer and winter?
You can, but many rooftop restaurants keep prices the same and compensate with lower food cost in peak season. Choose what fits your concept.
How do I prevent too much waste in bad weather?
Check the weather forecast when ordering and adjust your mise-en-place accordingly. Keep flexible menus that you can quickly adapt to the expected number of guests.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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