Life Sciences Real Estate: The Buildout Premium First-Time Buyers Underestimate

Life sciences real estate is priced like premium office and built like a factory, and first-time buyers underwrite the rent before they understand the buildout. A lab commands a rent premium over office, so the pro forma looks generous. Then the tenant improvement bill arrives. Cushman & Wakefield put average life sciences fit-out cost at roughly $846 per square foot in 2025, against $110 to $315 for standard office. The difference is not decoration. It is mechanical, electrical, and plumbing infrastructure that a lab requires and an office does not, and it is the line that turns a headline yield into a real one. Buyers who model the rent and skip the buildout are pricing the wrong asset.

Key Takeaways

Life sciences fit-out averaged roughly $846 per square foot in 2025, per Cushman & Wakefield, versus $110 to $315 for standard office, and that gap is the buildout premium buyers underestimate.
MEP systems account for roughly half of lab construction cost, per Skanska and Cushman & Wakefield benchmarks, because ventilation, redundancy, and utilities are the product, not the finishes.
The U.S. life sciences vacancy rate reached 23.9% in Q2 2025, up 520 basis points year over year, per CBRE, so the buildout is being spent into a soft leasing market.
Average life sciences lease terms fell from 83 months in 2021 to 69 months in Q1 2025, per Cushman & Wakefield, shortening the window to amortize a buildout that costs multiples of office.
Specialized lab space rarely reuses cleanly for the next tenant, so a first-time buyer underwrites reuse risk on top of build cost, not one or the other.

Why Is Life Sciences Buildout So Much More Expensive Than Office?

Life sciences buildout costs multiples of office because a lab is an infrastructure product, not a finished space. An office needs lighting, HVAC for human comfort, and standard power. A lab needs high air-change ventilation, fume exhaust, redundant utilities, vibration control, backup power, and often specialized gas and water systems. Those requirements sit in the building's bones, and they are expensive.

The numbers frame the gap. Cushman & Wakefield reported average life sciences fit-out at roughly $846 per square foot in 2025, up 4.3% year over year, with high-containment and gene-therapy manufacturing labs exceeding $1,230 per square foot. Standard office fit-out runs $110 to $315. A buyer converting or delivering lab space is not paying a premium for nicer finishes. As one life sciences project executive put it: "In a lab you are not building rooms, you are building the machine the rooms sit inside." The machine is what costs. The finishes are almost an afterthought against the systems that make the space usable for research at all.

How Much of the Cost Is Mechanical and Electrical?

Mechanical, electrical, and plumbing systems account for roughly half of lab construction cost, which is where the office analogy breaks entirely. In an office, MEP is a modest share of the fit-out. In a lab, ventilation alone can dominate the budget because research spaces demand high air-change rates, single-pass air, fume hoods, and redundancy that human-occupancy buildings never require.

Skanska and Cushman & Wakefield benchmarks put MEP at roughly 50% of lab construction cost, with mechanical and HVAC often the single largest line at 25% to 35% of the total project. Complex lab HVAC can exceed $50 per square foot on its own. This is why a first-time buyer who tours a shiny lab and prices it like Class A office misses the point: the value and the cost both live in systems that are invisible on a walkthrough. It is the same lesson that separates a data center from an office, where the deal is the power and cooling, not the floor area. The finished surfaces are the smallest part of the bill.

Cost element	Standard office fit-out	Life sciences fit-out	Driver
Typical cost per sq ft	$110 to $315	Roughly $846 average (2025)	Systems, not finishes
MEP share of build	Modest	Roughly 50% of total	Ventilation, redundancy, utilities
HVAC intensity	Human comfort	High air-change, single-pass, exhaust	Research air requirements
High-containment / gene therapy	Not applicable	$1,230+ per sq ft	Biosafety and process systems
Reusability for next tenant	High	Often low without rework	Specialized process fit

Does the Rent Premium Cover the Buildout in Today's Market?

The rent premium does not automatically cover the buildout, and 2025 conditions make that gap worse. Life sciences rents carry a premium over office, but the buildout costs multiples of office, and the recovery depends on high occupancy and long leases. Both are under pressure. CBRE reported U.S. life sciences vacancy at 23.9% in Q2 2025, up 520 basis points year over year, with a supply wave still delivering.

A softening market attacks the buildout math from three sides. First, vacancy near 24% means longer lease-up and more downtime before the fit-out earns anything. Second, Cushman & Wakefield reported average lease terms falling from 83 months in 2021 to 69 months in Q1 2025, compressing the window over which an $846-per-foot buildout amortizes. Third, tenant improvement allowances have climbed as landlords compete for scarce tenants, so more of the buildout cost lands on the owner rather than the tenant. A buyer who assumed office-length leases, office-speed lease-up, and a tenant-funded fit-out has three assumptions working against a cost base that is already five to eight times office. The premium rent is real. Whether it clears the buildout is a function of occupancy and term, and in 2025 both moved the wrong way. Buyers should stress this in the pro forma rather than trust the headline lab rent.

What Reuse Risk Comes With Specialized Lab Space?

Reuse risk is the buildout premium's second bill: a highly specialized lab rarely transfers cleanly to the next tenant, so the owner may pay to rebuild between users. A chemistry lab, a vivarium, and a gene-therapy suite are not interchangeable. When one tenant leaves, the fit-out that cost a fortune may not fit the next research program at all.

This is the difference between generic and specialized lab space, and it maps to tenant type. Cushman & Wakefield noted that startups often take smaller generic labs while established firms require large build-to-suit facilities, and that most tenants cannot simply drop into space configured for someone else's process. Generic wet-lab shells reuse reasonably. Purpose-built process space does not. A first-time buyer who underwrites a specialized lab at a single buildout cost is missing the recurring exposure: every rollover may trigger another partial rebuild, funded by the owner, in a market where CBRE already reports vacancy near 24% and venture funding to biotech has thinned. The buildout is not a one-time capital event. For specialized space, it is a cost that can repeat at each turn, which is why reuse risk belongs in the underwrite alongside the first fit-out, not after it. A disciplined highest and best use read asks not just whether the space works for today's tenant but whether it works for the next three.

Frequently Asked Questions

How much does it cost to build out life sciences lab space? Life sciences fit-out averaged roughly $846 per square foot in 2025, per Cushman & Wakefield, up 4.3% year over year, with high-containment and gene-therapy manufacturing labs exceeding $1,230 per square foot. Standard office fit-out, by comparison, runs $110 to $315 per square foot.

Why is lab space more expensive to build than office? Lab space is more expensive because it is an infrastructure product. Mechanical, electrical, and plumbing systems account for roughly half of lab construction cost, driven by high air-change ventilation, fume exhaust, redundant utilities, and backup power that human-occupancy office space never requires.

Can specialized lab space be reused by the next tenant? Often not without rework. Generic wet-lab shells reuse reasonably, but purpose-built space such as a vivarium or gene-therapy suite rarely transfers cleanly to a different research program, so the owner may fund a partial rebuild at each rollover, adding recurring cost to the initial buildout.

Conclusion

Life sciences real estate rewards buyers who underwrite the buildout, not the rent. The premium rent is real, but it sits on top of a cost base that runs five to eight times standard office, concentrated in mechanical and electrical systems that a walkthrough never reveals. In 2025 that buildout is being spent into a market with vacancy near 24% and lease terms shortening, so the recovery window is tighter than the pro forma assumes.

The first-time buyer's error is treating a lab as premium office with a better rent line. It is a factory with a rent line, and the factory is most of the cost. Price the fit-out, price the MEP load, and price the reuse risk that specialized space carries at every rollover. Do that and the yield you underwrite is the yield you get. Skip it and the headline rent finances a buildout it was never sized to cover.