A 180m² bistro in Amsterdam was bleeding €1,200 monthly from underused corners and oversized storage areas. Restaurant owners often pay premium prices for space that sits empty while their profitable zones work overtime. Smart space optimization can slash your overhead by 15-25% without losing a single customer.
What do we mean by overhead and space efficiency?
Overhead covers all your fixed expenses that aren't food-related: rent, utilities, insurance, equipment depreciation. Most restaurants see overhead consume 25-35% of revenue. Space efficiency means every square meter earns money rather than just draining it.
💡 Example:
Restaurant of 200m² with €8,000 rent per month:
- Cost per m²: €40 per month
- With 60 seats: €133 rent per seat per month
- Each seat needs to earn €4.40 per day in rent
With an average of 1.5 turns per seat per day, you need €6.60 for break-even rent alone.
Identify your dead spaces and underused zones
Take a critical walk through your restaurant. Every square meter that doesn't contribute to revenue still costs you money.
- Hallway spaces: Anything wider than 1.2 meters wastes valuable real estate
- Storage areas: Beyond 15% of total space becomes excessive
- Office space: Can you consolidate or eliminate entirely?
- Dead corners: Spots where customers never venture
⚠️ Watch out:
Don't sacrifice comfort for space savings. Cramped guests spend less and return less often, costing you more than rent savings.
Multi-functional use of spaces
After managing kitchen operations for nearly a decade, I've seen the biggest overhead reductions come from spaces that serve double duty:
- Lunch and dinner reconfiguration: Different table arrangements maximize capacity for each service
- Day office, night storage: Flexible layouts adapt to operational needs
- Bar doubles as waiting area: Guests purchase drinks while queuing for tables
- Seasonal terrace adaptation: Indoor expansion during off-season months
💡 Example: Flexible lunch/dinner setup
At lunch: split 4-person tables into 2-person tables (more revenue per m²)
- Lunch: 40 seats in pairs
- Dinner: 32 seats in fours
- Lunch revenue per m²: 20% higher
More covers per service, identical fixed costs.
Optimize your kitchen-to-dining ratio
The golden ratio sits around 70% guest space, 30% back-of-house operations. But your kitchen size directly impacts profitability—too large kills revenue, too small creates chaos.
- Kitchen exceeding 35%: You're likely wasting valuable dining space
- Kitchen under 25%: Efficiency suffers, service times increase
- Storage over 10%: Excess inventory or poor organization
Boost revenue per square meter
Sometimes the solution isn't shrinking space—it's maximizing income from existing footage:
💡 Example: Increasing revenue per m²
Restaurant 150m², 50 seats, €300,000 annual revenue:
- Current revenue per m²: €2,000 per year
- Target: €2,400 per m² (20% improvement)
- Extra revenue needed: €60,000 per year
That's €5,000 extra monthly from identical square footage.
- Accelerated table turnover: Streamlined service increases nightly covers
- Higher check averages: Strategic menu design and staff training
- Multiple daily services: Breakfast, lunch, happy hour, dinner
- Takeaway integration: Additional revenue without extra seating
Reduce energy costs through smart layout
Your floor plan directly affects utility bills. Strategic design saves hundreds annually:
- Zone clustering: Group hot water and kitchen equipment
- Thermal separation: Insulate kitchen from dining areas
- Natural lighting: Maximize daylight to reduce electric costs
- Volume reduction: Smaller spaces cost less to heat and cool
⚠️ Watch out:
Renovation investments need careful calculation. A €10,000 project saving €200 monthly takes 4 years to pay back.
Renegotiate rent through efficiency
Demonstrating space efficiency gives you negotiating power with landlords:
- Present optimization plans: Show landlords you need less square footage
- Request rate reductions: Share maintenance and utility savings
- Evaluate relocation: Sometimes moving beats renegotiating
How do you calculate costs per square meter? (step by step)
Calculate your total fixed costs per month
Add up: rent, energy, water, insurance, waste, internet, phone. These are your overhead costs you need to recover from every square meter.
Measure your total space and divide into zones
Guest area, kitchen, storage, office, hallways, restrooms. Calculate cost per m² by dividing total overhead by total space.
Calculate how much revenue each zone needs to generate
Only guest space generates direct revenue. This zone must cover the costs of all other zones. Divide total overhead by guest space in m².
✨ Pro tip
Map your guest flow patterns for 14 consecutive days, marking occupancy every 20 minutes during service. Dead zones consistently empty during peak hours drain €35-50 per square meter monthly without generating any revenue.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
Was this article helpful?
Frequently asked questions
What percentage of revenue should go to overhead costs?
Restaurants typically allocate 25-35% of revenue to overhead expenses. Anything above 35% makes profitability challenging, while staying below 25% indicates excellent cost control.
Can I reduce my kitchen size to add more seating?
Only if your kitchen currently exceeds 35% of total space. An undersized kitchen creates operational bottlenecks and longer service times, ultimately costing more in lost revenue than you'd gain from extra seats.
What constitutes good revenue per square meter?
€2,000-3,000 per m² annually represents typical performance. Revenue above €3,000 per m² indicates strong efficiency, while below €1,500 signals potential profitability issues.
How can I tell if my storage area is oversized?
Storage shouldn't exceed 10-15% of your total restaurant space. Larger storage areas usually indicate excessive inventory levels or inefficient organization systems that need addressing.
Should I consider subletting unused space to other businesses?
Only if it enhances rather than detracts from your core restaurant operations. A complementary coffee bar might work, but ensure any partnership strengthens your brand and customer experience.
What's the minimum width needed for customer walkways?
Guest walkways need at least 90cm for comfortable passage, while service corridors require 1.2 meters minimum. Anything beyond these measurements represents potential revenue-generating space.
How do I calculate the true cost per seat in my restaurant?
Divide your monthly rent by total seats, then factor in utilities and other space-related costs. Each seat should generate 3-4 times its monthly space cost to ensure profitability after all expenses.
📚 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.
Related questions
Save up to 15% on your food cost
Most kitchens save 8-15% on food cost as soon as they start measuring. KitchenNmbrs makes measuring simple. Start your free trial today and see the difference.
Start free trial →