The buildout that keeps a medical tenant for 20 years is the same buildout that makes the space unsellable empty

Managing medical space, the stickiness is real and it shows up in small ways. Medical tenants call about the HVAC in the exam rooms, they don't call about looking around. Across a range of suites, voluntary departures are uncommon, and when one happens it's usually because the practice sold to a system that consolidated multiple offices. That's also the vacancy case in one sentence. When a medical tenant leaves it's usually not because they shopped the market, it's a practice event with little outside visibility. So the vacancy is rare and the cause is outside the landlord's control, which makes it hard to underwrite.

I've done the diligence on four medical LP deals and passed on three. The question I ended up asking every sponsor was how many suites in the building could be re-let without demolition. Not how nice they were. How many could a different practice of a different specialty walk into and use.

One building had six suites and the real count was two. Four were built so specifically for the sitting tenant that a new tenant would gut them. That's a building where four of six suites carry a six figure re-tenant cost, and the sponsor was reserving as if all six were generic. @renee_dubois your loop resolves when you count suites that way instead of thinking about the building as one thing.

This pattern shows up often. Take a two-suite building with a 1,900 sf dental suite, five operatories built out by a prior tenant. The tenant sells the practice, the buyer wants to be closer to a different school district, and the space goes empty at expiration. It sits 14 months. Every dentist who tours wants the operatories moved, because chair vendor and preferred layout rarely match what is already plumbed, and moving operatories is a real job. The usual resolution is leasing to a new dentist at close to the old rent, with something like $70k going into repositioning the plumbing and cabinetry. The specialization earns a rent that general office never would, and it also costs months of vacancy and real dollars of reposition work. Both are true at once. Over a full hold, the trade still tends to work, but a specialized suite should never be underwritten at general office downtime.

Lenders see this the way @marcus_hale41 describes and it shows up in structure rather than in conversation. What they require on a single-tenant medical building versus multi-tenant tends to put more emphasis on remaining lease term, guarantor strength, and sometimes a funded reserve or holdback tied to rollover. Terms vary by lender and change, so get the actual quote in writing. The part relevant to @renee_dubois's question: if the debt market prices specialization as risk, that's a signal about resale liquidity independent of what any report says about stickiness.

@carlos_nunez's $70k is the number I'd point at. On the renovation side, medical is where scope creep lives. You go in to reconfigure two operatories and you find the vacuum lines run somewhere nobody documented, the panel is at capacity, and now you're pulling a permit that triggers accessibility work in the restroom you weren't touching. Whether that trigger applies depends on your local code and how the jurisdiction reads the scope, so ask the building department before you budget.

So I'd say net negative unless you buy at a price that already assumes one full suite gut in your hold period.

@omar_haddad that's a pricing answer rather than a yes or no, which I think is right. If a full suite gut is a known cost you can estimate, it belongs in the underwriting like a roof does. The problem is timing. A roof you can schedule. A practice sale you can't.

What I haven't seen anyone in this thread put a number on: how much rent premium does the specialization actually get you? @carlos_nunez said close to old rent after $70k, which sounds like the premium is in the renewal rather than in the re-let.

@stephen_ok9 that's the split worth holding onto. The stickiness pays at renewal with the sitting tenant, and it costs at re-let with a new one. So the whole thing turns on renewal probability per suite, and renewal probability is mostly about the practice, not the building. Which means the useful reading is practice-level information that's usually hard to get.

@luis_carrera more can be learned than expected without financials. Ask how long the practice has been at that location, how many providers, whether they own or lease their equipment, whether the principals are near retirement, whether they've expanded once already in the building. None of that is confidential and all of it moves renewal odds.

@aaron_fitz10's expansion question is the one that would decide this. A practice that has already grown into adjacent space in its building has told you everything. Moving costs it the whole appointment book for a month, and it has already voted with a construction check. A practice that's been flat at the same square footage for twelve years with owners in their late fifties is a different tenant at the same rent.

How specialized a building is changes a lot with era, at least in terms of construction. Buildings from the last fifteen years or so were often designed with generic exam module layouts and central corridors that reconfigure reasonably. Older ones were built one suite at a time around whoever signed, and those are the four-of-six situations @marcus_hale41 found. @renee_dubois for a cheap read before spending money on diligence, get the as-built drawings and look at where the plumbing chases are. Suites where wet walls line up on a repeating grid re-tenant well. Suites with plumbing scattered wherever the last dentist wanted a sink cost more.

@gregpowell66 that's the most useful test in the thread and it's free. Reading back through, the case for buying isn't that specialization is good or bad, it's that it can be measured suite by suite before committing. Between @marcus_hale41 and @gregpowell66, the how-specialized framing edges out the pool-size one on reflection.