When business owners lease commercial space for a franchise location, retail shop, office, restaurant, or service facility, one of the most confusing parts of the process is understanding rent per square foot (PSF) and determining whether a space is truly affordable.

Landlords often advertise rent using PSF pricing because it standardizes comparisons between spaces. But not all PSF numbers are equal. A space listed at “$25 per square foot” could be a great deal or a financial disaster depending on how the rent is structured, what additional expenses are included, and how much revenue the location can realistically produce.

This article explains how to interpret rent per square foot, the most common lease structures, how to calculate your true total occupancy cost, and how to decide whether a lease makes sense for your business.

1) What Does Rent Per Square Foot Mean?

Rent per square foot is simply the annual rent divided by the size of the leased space.

Basic formula

Annual Base Rent ÷ Square Feet = Rent PSF

If a 2,000 sq ft space has annual base rent of $50,000:

$50,000 ÷ 2,000 = $25 PSF

This is usually expressed as $25 per square foot per year.

2) The Most Important Detail: Is It Annual or Monthly?

Many first-time tenants make a mistake by assuming PSF rent is monthly. In almost all commercial leasing, the PSF number is annual.

So $25 PSF typically means $25 per sq ft per year, not per month.

To convert to monthly rent:

(PSF × Square Feet) ÷ 12 = Monthly Base Rent

Example:

• $25 PSF × 2,000 sq ft = $50,000/year
• $50,000 ÷ 12 = $4,166/month base rent

If you want a deeper guide on terms and leverage points, read our article on commercial lease negotiation strategies.

3) Why PSF Rent Alone Can Be Misleading

When you see rent PSF, it usually refers to base rent only, but your true occupancy cost may include:

• CAM charges (Common Area Maintenance)
• property taxes
• building insurance
• utilities
• management fees
• maintenance costs
• trash removal
• security
• repairs

That means you need to calculate all-in occupancy cost, not just the base rent.

A space with $20 PSF base rent + $12 PSF NNN charges is not $20 PSF. It’s $32 PSF all-in.

4) Understanding the Most Common Lease Types

Commercial rent is structured in a few main ways. Knowing your lease type is essential because it determines how much you actually pay.

A) Gross Lease (Full Service Lease)

In a gross lease, the tenant pays a fixed rent and the landlord covers most expenses like taxes, insurance, and maintenance.

You pay:

• one monthly rent amount

Pros

• easy budgeting
• fewer surprise costs

Cons

• base rent is usually higher
• landlord may increase rent over time to cover costs

Gross leases are more common in office buildings but sometimes seen in retail.

B) Modified Gross Lease

A modified gross lease splits expenses.

You might pay:

• base rent
• plus some utilities, janitorial, or shared expenses

This is common in office and mixed-use properties.

C) Triple Net Lease (NNN)

NNN is extremely common in retail and franchise leasing.

In a NNN lease, the tenant pays:

1. Base rent
2. Property taxes
3. Building insurance
4. Common area maintenance (CAM)

So your rent has two components:

• Base rent PSF
• NNN charges PSF

Example:

• Base rent: $25 PSF
• NNN charges: $10 PSF
• Total: $35 PSF (all-in)

Pros

• lower base rent
• landlord passes costs through

Cons

• costs can increase unexpectedly
• you pay a share of expenses you don’t control
• budgeting requires careful review

5) How to Calculate True Total Monthly Occupancy Cost

To decide if a lease makes sense, you must compute total monthly occupancy cost, not just advertised rent.

Step-by-step calculation:

1. Base rent PSF × square feet = annual base rent
2. NNN/CAM PSF × square feet = annual pass-through costs
3. Add together to get annual occupancy cost
4. Divide by 12 for monthly cost
5. Add utilities and other recurring costs

Example:

• Space: 2,000 sq ft
• Base rent: $25 PSF
• NNN: $10 PSF

Annual base rent: 2,000 × $25 = $50,000
Annual NNN: 2,000 × $10 = $20,000
Total annual rent: $70,000
Monthly rent: $70,000 ÷ 12 = $5,833/month

Now add:

• utilities ($600/month)
• internet/security ($200/month)

True monthly occupancy cost could be around $6,633/month.

This is the number you need to compare against revenue potential.

6) What Is a Good Rent Per Square Foot?

There isn’t one universal “good PSF.” It depends on:

• your industry
• location type (urban vs suburban)
• traffic value
• profit margin of your business
• ability to monetize square footage

For example:

• Restaurants may tolerate higher PSF if sales volume is high.
• Low-margin retail may struggle with high PSF.
• Service businesses can succeed in less expensive spaces because they don’t require premium foot traffic.

So the better question is:

Does the rent align with what the space can produce in revenue and profit?

If you’re building your numbers from scratch, this guide on writing a franchise business plan can help you model revenue and costs more realistically.

7) Use a Key Metric: Occupancy Cost Ratio

The best way to evaluate if rent makes sense is the occupancy cost ratio, which measures how much of your revenue goes to occupancy (rent + CAM + taxes + insurance).

Formula:

Total occupancy cost ÷ Gross revenue = Occupancy cost ratio

Typical healthy ranges (general benchmarks):

• Retail: ~8% to 12%
• Restaurants/QSR: ~6% to 10% (can vary widely)
• Service businesses: often lower, ~4% to 8%
• Medical/office: often 5% to 10%

These ranges vary by market, but they provide a useful framework.

Example:

If monthly occupancy cost is $6,000 and you expect $60,000/month revenue:

$6,000 ÷ $60,000 = 10% occupancy cost ratio

That may be acceptable depending on industry and margins.

If you expect only $35,000/month revenue:

$6,000 ÷ $35,000 = 17% occupancy cost ratio

That is usually too high unless margins are extraordinary.

8) How to Know If the Rent Makes Sense for Your Business

A lease makes sense when you can hit required revenue targets, the location supports visibility and customer acquisition, margins can absorb occupancy costs, buildout costs align with expected returns, and your business can break even within a reasonable timeline.

Here’s how to evaluate:

Step 1: Model revenue realistically

Estimate:

• average transaction value
• customer count per day
• days open per month

Then compare to your total fixed costs.

Step 2: Build a break-even model for your franchise investment

Calculate:

• monthly occupancy cost
• payroll
• insurance
• marketing
• supplies
• loan payments
• owner salary expectation

Then determine how much revenue you need to break even. If the break-even number feels unrealistic for the market, the rent is too high.

Step 3: Compare to similar businesses in the area

Ask:

• what are other businesses paying PSF in that plaza/market?
• what is the vacancy rate?
• what incentives are landlords offering?

A space might be overpriced relative to local norms.

Step 4: Consider buildout costs and tenant improvement allowance

A cheap space with massive buildout requirements can be more expensive than a higher-rent space that’s already built.

Evaluate:

• construction requirements
• permitting
• HVAC upgrades
• grease traps (restaurants)
• ADA compliance
• signage rules

Sometimes the correct decision is based more on total cost to open than rent PSF.

Step 5: Evaluate lease terms and escalations

Understand:

• lease length
• annual rent increases (often 2–4%)
• options to renew
• rent abatement (free rent months)
• CAM caps (if any)
• termination clauses
• personal guarantee terms

Even if rent is affordable now, escalations can push it beyond sustainability later.

9) Common Mistakes When Evaluating PSF Rent

Mistake 1: Looking at base rent only

Always calculate all-in occupancy cost (base + NNN + utilities).

Mistake 2: Overestimating revenue

Be conservative with your revenue assumptions.

Mistake 3: Underestimating buildout

Buildout can be the biggest cost in retail and food.

Mistake 4: Ignoring CAM increases

CAM and taxes rise over time.

Mistake 5: Not negotiating

Many landlords expect negotiation and may offer:

• free rent months
• TI allowances
• reduced rent during ramp-up
• flexible term options

10) Negotiation Tips to Improve Lease Economics

Even if a space feels expensive, negotiation can change everything.

What to negotiate:

• Lower base rent
• Free rent period during buildout and launch
• Tenant Improvement (TI) allowance
• CAM caps
• Exclusive use clause (prevents competitor next door)
• Option periods with defined renewal terms
• Assignment and transfer rights (important for franchises)
• Reduced personal guarantee (or burn-off guarantee after performance)
• Signage rights
• Repair obligations (roof, HVAC, structure)

A professional lease negotiation can protect hundreds of thousands of dollars over time.

Overall, lease negotiation is often one of the most important decisions you will make when opening a franchised business, and it must be handled with enormous care, time, and energy.

For more on the bigger-picture decisions that shape long-term franchise success, see these key business decisions in franchising.

11) Rent PSF in Franchise Selection and Franchise Success

For franchise investors, rent is a major driver of success. Many franchise systems provide site selection support and recommend occupancy benchmarks. The smartest franchisees build the lease into their business model early.

A franchise that needs premium locations must have premium revenue. A franchise that can operate in lower-cost markets can often scale faster.

Always align the franchise model with location economics.

12) Final Checklist: Does This Lease Make Sense?

Before signing, confirm:

• All-in occupancy cost (not just base rent)
• Occupancy cost ratio fits your industry
• Revenue assumptions are conservative and realistic
• Buildout costs and timeline are manageable
• Lease terms protect you and allow transfer/resale
• Escalations and CAM increases are understood
• You’ve negotiated incentives and protections
• The location supports traffic and customer access

Rent PSF Is Just the Starting Point, Total Occupancy Cost Determines Whether the Lease Works

Rent per square foot is a useful metric, but it’s only meaningful when you understand:

• whether the number is annual
• the lease structure (gross vs NNN)
• CAM, tax, and insurance pass-through costs
• how rent compares to revenue potential
• how the lease terms evolve over time

Ultimately, the right lease is the one where your occupancy cost is sustainable, your break-even is realistic, and the location supports the business model.

When you evaluate rent using all-in occupancy cost and occupancy ratio, you make a decision like an investor, not just a tenant.

For support in finding the right space for your franchise, contact FMS Franchise Real Estate via our contact page.