Build-to-Suit Lease Explained

A build-to-suit lease is a real-estate arrangement in which a developer or landlord constructs a property—or improves an existing building—to the specific requirements of a single anchor tenant, then leases it to that tenant under a long-term net lease. The tenant typically commits to a multi-decade occupancy, and the developer often retains ownership or grants a long-duration lease. The structure is common in industrial, retail, office, and office-warehouse segments where a major user wants a facility tailored to its operations.

The build-to-suit (BTS) model solves a problem: a large user—a warehouse operator, a pharmaceutical manufacturer, or a big-box retailer—needs a facility that doesn’t yet exist or would require major renovation. Existing stock won’t work. Rather than develop the property speculatively, the landlord builds to the tenant’s spec, confident of occupancy and cash flows because the user is already signed on.

The transaction structure

A typical BTS transaction unfolds in phases:

Leasing phase: The prospective tenant (or their broker) identifies a site or negotiates with a developer. They outline space, ceiling heights, electrical loads, dock configurations, HVAC requirements, and any special features. The developer and tenant agree on a long-term lease (often 15–25 years), a rent schedule, and who pays for what.

Development phase: The developer obtains financing (usually a construction loan) based on the lease as an anchor. The construction loan is non-recourse to the developer (contingent on the lease; if the tenant walks, the deal typically terminates). The developer hires architects and contractors to build out the property exactly to spec.

Stabilization phase: Once construction completes and the tenant takes occupancy, the developer usually refinances the construction debt with a permanent mortgage (based on the lease cash flows and the property’s net operating income) or sells the property to an investor.

Long-term phase: The tenant occupies for the lease term, paying rent and operating costs. The landlord (developer or subsequent owner) collects rent and holds the real estate.

Tenant improvements and the TI allowance

“Tenant improvements” (TI) are the build-outs and customizations unique to the tenant’s use. These can be substantial: a pharmaceutical facility might require specialized HVAC, wet labs, and containment; a fulfillment center might need heavy-duty dock equipment and specific floor loading.

The TI allowance is the cash the landlord provides (or agrees to fund) toward these improvements. If the allowance is $500/sq ft and the space is 50,000 sq ft, the landlord funds $25M in TI costs. Any overages are the tenant’s responsibility, or the landlord deducts them from the lease rent.

The allowance is a form of concession or incentive—the tenant is paying a below-market rent in exchange for the landlord funding customization. This is more favorable to the tenant than a market-rate lease on a generic building, where the tenant must pay for improvements themselves.

Lease economics: net leases

Most BTS deals are structured as triple-net (NNN) leases, meaning the tenant pays:

• Base rent
• Real-estate taxes
• Insurance on the building
• Common-area maintenance (CAM) or building operating costs

The landlord’s role is purely to own the real estate and collect rent. The tenant bears nearly all operating risk. This structure makes sense for BTS: the tenant’s specialized use means the landlord wouldn’t want to manage operations anyway, and a NNN lease produces highly predictable income for the landlord’s lender and future buyers.

Some BTS deals are double-net (NN) (tenant pays taxes and insurance but not all maintenance) or even gross leases (landlord manages). The net-lease structure is more common.

Risk allocation

BTS divides risk distinctly:

Tenant risks:

• Operational/business risk: If the tenant’s business declines, it still pays rent (absent default). The lease is a fixed obligation.
• Maintenance and capital (in NNN): If the roof or HVAC fails, the tenant funds repairs.
• Vacancy risk: The tenant is locked in; if it must relocate, it’s still liable for rent (barring termination clauses).

Landlord risks:

• Real-estate risk: Market values change; the property may appreciate or depreciate.
• Refinancing risk: At maturity, the landlord refinances based on lease rates and cap rates. If rates have risen, refinancing is expensive.
• Tenant default: If the tenant fails to pay or goes bankrupt, the landlord loses income and must re-let.
• Lease expiration risk: At lease end, the property may need costly renovation to attract a new tenant, or the market may have shifted.

Why developers pursue BTS

Developers favor BTS for several reasons:

1. Reduced speculative risk: A signed lease is a commitment. The developer isn’t betting on finding tenants post-completion.
2. Financing advantage: Lenders love an anchored lease. Loan terms are better, rates lower.
3. Reduced operational risk: Once the lease is signed and construction complete, the developer can exit via refinancing or a sale.
4. Predictable exit: The developer can sell the income-producing property to a real-estate investment trust (REIT), insurance company, or other investor with strong proceeds.

Why tenants pursue BTS

Tenants benefit from:

1. Customization: The space is built to their exact specs. No retrofits, no compromise.
2. Long-term certainty: A 20-year lease locks in a location and cost. Useful for capital-intensive operations.
3. Below-market rent: The TI allowance and custom build are financed by a favorable lease rate, typically 10–20% below market for generic space.
4. Favorable terms: The developer is eager to sign and may offer break-even rent in year one, escalations later, or renewal options.

Financing the BTS deal

Construction financing is critical. A developer might:

• Secure a construction loan for the building shell and base systems.
• Have the tenant (or third party) fund the TI allowance separately, or include it in the construction loan.
• Use a “mezzanine” structure where the tenant’s TI portion is a subordinated loan.

Once complete, the permanent financing is based on the lease cash flow. A 20-year, $100M annual rent lease might support $1.2–1.4B in permanent debt (at a 7–8% cap rate). The developer refinances the construction loan and pockets the spread.

Examples across sectors

Industrial/Warehouse: A third-party logistics (3PL) provider needs a 1M sq ft fulfillment center. It leases from a developer on a 15-year triple-net basis. Rent is $8/sq ft/year ($8M/year). The developer obtains a $100M construction loan, builds it, then refinances to permanent debt of $115M (based on a 7% cap rate), pocketing the $15M spread (and ongoing property appreciation).

Pharmaceutical Manufacturing: A biotech firm needs a specialized manufacturing facility with cleanroom, cold storage, and waste treatment. It commits to a 25-year lease with a tenant improvement allowance of $3,000/sq ft on 100,000 sq ft ($300M). The developer builds it, leases it back, and secures permanent financing of $400M (or sells to an institutional investor). The tenant owns a property perfectly suited to its operations and locked-in costs.

Retail: A major automotive dealership needs a custom showroom and service facility. It enters a 20-year triple-net lease with the developer. Rent is below market (the developer accepted a lower rate to fill the deal quickly), and the customization (service bays, parts warehouse, showroom layout) is funded via the TI allowance.

Lease terms and exit

BTS leases typically include:

• Renewal options: A tenant might have the right to renew at fair-market rent or a pre-agreed rate.
• Relocation rights: Occasionally, a tenant can move to a different building owned by the same landlord.
• Termination clauses: Some allow early exit under specific circumstances (e.g., casualty loss, breach by landlord).
• Expansion rights: If successful, the tenant might have an option to lease adjacent space.

At lease expiration (year 20 or year 25), the landlord and tenant renegotiate, the tenant relocates, or the landlord retakes the space and re-leases it (often at a higher rent, though the property may need updating).

Risks and considerations

For developers:

• Tenant credit is paramount. A marginal borrower can default mid-lease, stranding the landlord.
• Market obsolescence: A specialized facility might be difficult to re-let if the original tenant exits.
• Interest-rate risk: If permanent rates rise, refinancing becomes painful.

For tenants:

• Inflexibility: A long-term lease is a long-term obligation, even if the business changes.
• Residual value risk: The tenant has no equity in the property; if markets boom, the landlord captures all appreciation.
• Renovation cost at exit: Customized buildings are hard to re-lease; the landlord may require costly restoration.

See also