Why a 2020 Build Vintage Changes the Underwriting

Two listings landed on my desk last week. Same submarket — Northland medical office. Same NOI per square foot. Same tenant mix. One was built in 2020, the other in 1985. The seller of the 1985 building was confused why his cap rate quote came back 75 basis points wider. The answer is vintage — and once you understand what vintage actually signals to a lender and an appraiser, the spread stops feeling unfair and starts feeling like math.

Vintage is year built plus last major renovation. It is shorthand for the remaining useful life of every system in the building. A 2020 roof has 25 to 28 years of remaining life on a 30-year membrane. A 1985 roof is on borrowed time even if it was patched five years ago. HVAC runs 15 to 20 years before replacement, which means a 1985 building has been through two full mechanical cycles — and a buyer is betting on whether the seller did it right the second time. Electrical service amperage matters too: older buildings often top out at 400 amps when a modern medical or light industrial tenant wants 800 to 1,200. Plumbing is cast iron versus PVC, which is the difference between a maintenance call and a wall demo. ADA compliance has a hard line at 1991 — anything older may carry retrofit exposure on a change of use. Fire suppression code shifted around 2003 in most KC jurisdictions, which means pre-2003 buildings without sprinklers are a tenant-improvement headache waiting to happen.

In the current Kansas City market, an otherwise-identical Class A medical office trades roughly 50 to 75 basis points inside its 1985 counterpart — sometimes 100 bps if the older building has deferred capex visible at inspection. That spread is not sentiment. It is three things stacked: lower capex reserve requirements (which flow directly into underwritten NOI), a lower lender risk premium (which flows into debt cost and therefore yield-to-equity), and a longer hold runway before the next major system replacement (which flows into terminal value assumptions). A buyer underwriting a 7.5 cap on the 2020 vintage is looking at the same risk-adjusted return as a buyer underwriting an 8.25 on the 1985 — they are not getting a better deal on the older building, they are getting paid for risk they will eventually have to spend on.

Appraisers and lenders model capex reserves directly into NOI. The going numbers I see: $0.20 to $0.50 per square foot per year on a 2015-or-newer Class A asset, $0.50 to $0.75 on a well-maintained 2000s building, and $0.75 to $1.50 on 1980s product. On a 50,000 sf building, that is the difference between a $15,000 reserve hit and a $75,000 hit — which at a 7 cap is roughly $850,000 of value. PSA terms shift too. Sellers of newer product push for 21-day inspection periods and minimal capex credits. Sellers of older product accept 45- to 60-day inspections and routinely give back $50,000 to $200,000 at closing for roof, HVAC, or parking lot work the buyer PCA flags. If you are underwriting an older asset and the seller will not entertain a capex credit, you are either overpaying or buying a problem the seller already knows about.

Not every older building is a worse deal. Heavy-timber and brick industrial from the 1920s through 1940s is irreplaceable — you cannot build that frame today at any price, and creative-office and brewery tenants pay a premium for it. Infill retail on a corner with grandfathered parking ratios beats a new build in a worse location every time, because parking is the constraint, not the vintage of the box. And low basis matters: a fundamentally sound 1985 warehouse at $45 per square foot gives a value-add buyer room to put $30 per foot into systems and still be at $75 all-in against $120 replacement cost. The rule I use: older vintage wins when the building has something that cannot be replicated — frame, location, parking, basis — and loses when it is just an aged version of a commodity asset.