Remember the scene in Ferris Bueller where the economics teacher drones “anyone, anyone” to a room full of glazed-over faces? That’s how most people feel reading a commercial listing. $2.25 NNN. 1,850 RSF. CAM est. $0.72. Anyone?
Here’s the thing. Every one of those abbreviations is a line item on your monthly bill. These are the eight money questions we hear most from business owners in Ventura and Santa Barbara County, with the math shown.
Question 8 of 50
How is commercial rent quoted in California?
Short answer: In Southern California, commercial rent is usually quoted in dollars per square foot per month, such as $2.25 per square foot NNN. Multiply the rate by the square footage for monthly base rent. Some markets and property types quote annual rates instead, so always confirm which one you’re looking at.
Example: 1,800 square feet at $2.25 per square foot per month = $4,050 per month in base rent. The same space quoted annually would read $27.00 per square foot per year. Same rent, very different looking number.
The letters after the rate matter as much as the rate itself. “NNN,” “MG,” and “FSG” each change what you owe on top of base rent (see Question 9).
Question 9 of 50
What's the difference between NNN, gross, and modified gross leases?
Short answer: In a NNN (triple net) lease, you pay base rent plus your share of property taxes, insurance, and common area maintenance. In a full service gross lease, those costs are included in the rent. A modified gross lease splits them, with some expenses included and others billed to you.
NNN (triple net)
Base rent + share of taxes, insurance, and CAM
Retail, restaurants, industrial, many medical
Modified gross (MG)
Base rent + some expenses (often utilities, janitorial)
Smaller office, older multi-tenant buildings
Full service gross (FSG)
Base rent; most operating costs included
Class A and B office
Absolute net
Nearly everything, including roof and structure
Single-tenant buildings
A gross lease isn’t automatically cheaper. It just moves the operating costs inside the rent. Compare total cost, not labels. Our NNN guide goes deeper.
Question 10 of 50
What are CAM charges and how are they calculated?
Short answer: CAM (common area maintenance) charges cover the cost of operating shared parts of a property, such as parking lots, landscaping, lighting, and shared restrooms. Tenants typically pay a pro rata share based on their square footage divided by the building’s total square footage, billed monthly as an estimate and reconciled once a year.
If your suite is 2,000 square feet in a 20,000 square foot center, your pro rata share is 10 percent. If the center’s annual CAM budget is $120,000, your share is $12,000 a year, or $1,000 a month.
Things worth negotiating:
- A cap on annual increases in controllable CAM (often 3 to 5 percent)
- Exclusions for capital improvements, management fees above a set percentage, and costs from other tenants’ use
- Audit rights to review the landlord’s reconciliation
Qualified small businesses and nonprofits in California also have new rights to operating cost documentation under SB 1103 (see Question 36).
Question 11 of 50
What's the difference between rentable and usable square feet?
Short answer: Usable square feet is the space you actually occupy. Rentable square feet adds your share of common areas like lobbies, hallways, and shared restrooms. The difference is called the load factor, often 10 to 20 percent in multi-tenant office buildings. You pay rent on rentable square feet.
A 2,000 usable square foot suite with a 15 percent load factor is billed as 2,300 rentable square feet. At $2.50 a foot, that’s $750 a month for space you walk through but never use.
When comparing spaces, compare cost per usable square foot. It’s the only apples-to-apples number.
Question 12 of 50
What is total occupancy cost?
Short answer: Total occupancy cost is everything you pay to occupy a space: base rent, NNN or CAM charges, property tax and insurance pass-throughs, utilities, maintenance and repairs you’re responsible for, and your own business insurance. It is the only number that tells you what a space really costs each month.
A simple monthly worksheet:
Base rent
$____
NNN / CAM estimate
$____
Utilities (electric, gas, water, trash, internet)
$____
HVAC service contract and repairs
$____
Janitorial
$____
Tenant insurance
$____
Total occupancy cost
$____
Full breakdown in What Your Commercial Space Really Costs.
Question 13 of 50
How much is a security deposit on a commercial lease?
Short answer: There is no legal cap on commercial security deposits in California. One to two months of total rent is common for established businesses, while startups and tenants with limited financial history are often asked for three to six months or a letter of credit. Deposit size is negotiable.
Ways to reduce a large deposit:
- Offer a burn-down, where the deposit reduces after 12 to 24 months of on-time payments
- Trade a slightly larger deposit for removing or limiting a personal guarantee
- Share stronger financials, a business plan, or proof of liquidity up front
Question 14 of 50
How much does commercial rent go up each year?
Short answer: Most commercial leases include fixed annual increases, commonly around 3 percent per year, or increases tied to the Consumer Price Index (CPI), often with a floor and a ceiling. On a five-year lease, 3 percent annual bumps add roughly 12.6 percent to your rent by the final year.
The escalation is part of the negotiation. Options include a lower fixed percentage, a flat rate for the first two years, or CPI with a cap. Also check whether increases apply to NNN charges separately, because those rise on their own too.
Question 15 of 50
What upfront costs should I expect before opening in a new space?
Short answer: Expect first month’s rent and NNN, a security deposit, architectural and engineering fees, permit and plan check fees, buildout costs above any tenant improvement allowance, signage, furniture and equipment, utility deposits, insurance, and business licenses. For restaurants and medical users, buildout is usually the largest line item.
A checklist to price before you sign:
- Deposit and first month’s rent plus NNN
- Design, architecture, and engineering
- City permits and plan check (and county environmental health for food)
- Construction above the landlord’s TI allowance
- Signage, low voltage, internet, and security
- Furniture, fixtures, and equipment
- Insurance certificates the lease requires before you get keys
- A contingency of 10 to 20 percent
Negotiating free rent during buildout (see Question 27) is one of the easiest ways to protect your cash in this stretch.
Frequently asked questions
Is NNN always cheaper than gross?
Not necessarily. A NNN rate looks lower because expenses are billed separately. Add the NNN charges back in before comparing.
Can CAM charges go up during my lease?
Yes. CAM is usually reconciled annually, and it can rise with taxes, insurance, and maintenance costs unless you negotiate caps.
What does 'plus NNN' mean on a listing?
It means the quoted rate is base rent only, and you’ll also pay your share of taxes, insurance, and common area costs.
When you look at your current budget, do you know your true occupancy cost, or just the rent?
