The Renewal Math
A tenant who renews slightly below your asking rate is usually worth more to you than a new tenant at full asking rate. That’s not sentiment about good tenants — it’s arithmetic. Every month a suite sits empty, every dollar of tenant improvement, and every commission on a replacement lease comes out of the same income stream a buyer will one day capitalize into your building’s price.
What a rollover actually costs
Take a 10,000 SF suite in a Concord multi-tenant park leasing at $1.20/SF NNN. That’s $12,000 a month, or $144,000 a year. If the tenant leaves and the space sits six months, you’ve given up $72,000 in rent before you sign anybody. Then add the rest of it:
- Leasing commissions on the replacement deal, typically a percentage of the total gross lease value across the new term.
- Tenant improvements and turn costs — paint, flooring, office reconfiguration, dock levelers, roll-up repairs, power upgrades for the next user.
- Operating expenses you now absorb, since there’s no tenant to reimburse taxes, insurance, and common-area maintenance on a vacant suite.
- Free rent to win the replacement tenant, which is standard in most negotiated deals.
Stack those and a single small-bay rollover routinely costs the better part of a year’s rent on that suite. The concession it takes to keep a good tenant in place is almost always a fraction of that.
Vacancy doesn’t just cost rent — it costs value
The larger number is what a rollover does to your building’s price. Value on an income property is net operating income divided by a cap rate. At a 6.5% cap, every $12,000 of annual NOI carries roughly $185,000 of value. Lose a $144,000-a-year tenant and you’ve taken about $2.2 million off the capitalized value of that income until it’s replaced.
That gap matters most at exactly the wrong time. Buyers underwrite in-place income, not pro forma. Going to market with a vacant suite means either discounting your price or asking a buyer to trust your lease-up assumptions — and they rarely pay full value for someone else’s projection.
Start the conversation 12 to 18 months out
Most industrial leases require notice six to nine months before expiration. By then, a tenant weighing a move has already toured alternatives and may have a proposal in hand. You’re negotiating from behind.
Build a simple expiration calendar for the whole rent roll and open renewal conversations a year to eighteen months ahead. Early is cheap: you learn whether the tenant is growing, shrinking, or content, and you have room to solve for expansion space, a dock door, or added power before they start looking elsewhere.
Know what the tenant’s alternative really looks like
Industrial tenants move less often than office tenants because moving is genuinely expensive — racking, forklifts, three-phase power, air lines, permits, and downtime that shuts revenue off for days. A tenant who has been in your building eight years has real switching costs.
That’s leverage, but only if you know the market. Before you send a renewal proposal, pull current asking rates for comparable small-bay space in your submarket — Concord and Pleasant Hill price differently than Fairfield or Sacramento, and clear height, loading type, and yard drive real spreads within the same city. A renewal priced blind is either leaving money on the table or pushing a good tenant to shop.
Structure the renewal to protect value, not just occupancy
Occupancy is the point, but the terms are what a buyer reads:
- Annual escalations. Fixed yearly bumps compound your NOI and price better than a flat rate with a bigger day-one number.
- Expense structure. A true NNN structure passes rising taxes and insurance through; a gross lease leaves you absorbing them. See our guide to NNN lease structures for how each one lands on your bottom line.
- Renewal options. A fixed-rate option signed today at below-market pricing can cap your value for years. Fair-market-value options with a defined mechanic are safer.
- Staggered expirations. In a multi-tenant park, avoid stacking several leases in the same twelve months. Concentrated rollover risk is one of the first things a buyer discounts for.
Pro Tip: Read your rent roll the way a buyer will
Sort your leases by expiration date and look at the next 24 months. If more than a third of your income rolls in one year, that’s a pricing issue, not just an operations issue — and it’s fixable now by renewing early at staggered terms.
When not to renew
Retention isn’t automatic. If a tenant is well below current market and won’t come up, a short-term extension or a planned turnover can be the better move — that’s the same calculation behind the sell-or-reposition decision. The same goes for a tenant with chronic payment issues or a use that’s wearing the building down faster than the rent justifies. The point isn’t to keep everyone. It’s to make the choice deliberately, with the numbers in front of you, well before the clock forces it.
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