What Sets Lab and R&D Space Apart
Life sciences buildings require substantially more specialized infrastructure than standard office space, including enhanced air exchange and filtration rates, backup generator power, vibration control for sensitive equipment, reinforced floor loading, and specialized plumbing and gas lines. Space is generally categorized as wet lab (requiring water, gas, and chemical infrastructure for hands-on experimentation) or dry lab/office (computational or administrative work), and most buildings contain some mix of both.
Why Life Sciences Real Estate Clusters
Life sciences activity concentrates heavily in a small number of cluster markets — most notably Greater Boston/Cambridge, the San Francisco Bay Area, and San Diego — where proximity to leading research universities, deep scientific talent pools, and concentrated venture capital create self-reinforcing advantages. Because relocating a lab is disruptive and talent is difficult to replace elsewhere, tenants strongly prefer to stay within an established cluster even as rents rise.
Tenant Credit Risk from Early-Stage Biotech
A significant share of life sciences tenants are early-stage, pre-revenue companies funded by venture capital, grants, or partnership payments rather than product sales, meaning their ability to pay rent depends on continued fundraising success or clinical trial progress rather than steady operating income. Landlords commonly mitigate this by requiring larger security deposits or letters of credit and by closely tracking a tenant's funding stage and cash runway.
Underwriting and Conversion Considerations
Because lab build-outs are expensive and highly specialized, underwriters pay close attention to tenant improvement costs, the building's flexibility for re-tenanting if a lab tenant vacates, and the submarket's supply pipeline, since lab construction often surges during biotech funding booms and can lead to oversupply when funding tightens. A strong life sciences underwrite weighs both the durability of the cluster market and the credit quality and funding stability of the specific tenant roster.
Typical Tenants
- Biotechnology and pharmaceutical companies
- Academic and research institute spinouts
- Contract research organizations (CROs)
- Venture-backed early-stage life sciences startups
Key Underwriting Metrics
- Tenant funding stage and cash runway (months of operating capital)
- Weighted average lease term
- Tenant improvement allowance per square foot
- Mix of wet lab versus dry lab/office space
- Security deposit or letter-of-credit coverage
- Submarket lab vacancy and new supply pipeline
Major Risks
- Tenant credit risk from pre-revenue, early-stage companies
- High tenant improvement and re-tenanting costs if a lab tenant vacates
- Cluster-market concentration and cyclical biotech funding swings
- Limited alternative uses for highly specialized lab infrastructure
- Regulatory and permitting complexity for lab operations
Typical Lender Fit
- Banks and life insurance companies for stabilized, credit-tenant assets in established clusters
- Debt funds and bridge lenders for lab conversions or spec lab construction
- Life insurance companies favor long-leased large pharma/biotech credits
- Construction lenders for ground-up lab development in core clusters
How It Makes Money
- Base rent, often triple-net, on lab and office space
- Tenant reimbursements for specialized utilities and systems
- Premium rents versus standard office due to build-out cost and scarcity
- Renewal and expansion income as successful tenants scale within the cluster
Lab Space Build-Out Classes
| Class | Description | Typical Use |
|---|---|---|
| Wet lab | Full plumbing, gas, ventilation, and chemical infrastructure | Hands-on experimentation, biology/chemistry research |
| Dry lab / flex | Computational or bench work with limited wet infrastructure | Data analysis, device development, light R&D |
| Shell/warm space | Base building systems installed, lab fit-out not yet built | Speculative space awaiting tenant-specific build-out |
| GMP manufacturing suite | Highly controlled environment meeting manufacturing standards | Clinical or commercial-stage drug production |
Underwrite the Tenant's Runway, Not Just the Lease Term
A long lease term is only as reliable as the tenant's ability to keep paying rent. For early-stage biotech tenants, track funding stage, recent capital raises, and estimated cash runway alongside the lease itself, since a strong lease with a tenant that runs out of funding still results in vacancy and costly re-tenanting.
Module Check
Which factor most distinguishes life sciences lab space from standard office space?