Build-to-suit data centers: process, timeline and lease terms

What is a build-to-suit data center?

A build-to-suit is a data center developed for a single tenant on a specific site, built to the tenant's specification and leased to that tenant, usually before construction starts. The developer, or the developer's capital partners, buys or controls the land, secures power, finances and builds the facility, then owns it as a leased asset. The tenant commits to a long lease that makes that financing possible.

It differs from the other wholesale models in who designs the building and when you commit:

• Turnkey wholesale: you lease finished or planned halls in a building designed for many tenants. See turnkey data centers.
• Powered shell: the landlord delivers building and power, and you design, fund and install the inside. See powered shell data centers.
• Build-to-suit: the whole building is designed around your requirement, and the developer funds it.

When a build-to-suit makes sense

• The requirement is large and durable enough to fill a building for the whole term.
• The design is specialized: very high density, a specific liquid cooling architecture, unusual security or compliance needs.
• You want to control the design without putting capital into a building you would rather not own.
• You can commit to a long term and provide the credit a developer's lenders will require.
• Your timeline allows for development. If you need power within months, energized turnkey capacity is usually the only realistic option.

The build-to-suit process and timeline

A build-to-suit runs through the same phases as any data center development. What changes is that you are committed from the start, so every phase's risk touches your schedule.

How long it takes depends almost entirely on where the site starts:

• Power is the long pole. Cushman & Wakefield puts the average time to secure power for new large loads at 5.0 years in the Americas (Global Data Center Market Comparison, May 2026). CBRE says grid interconnection can take 24, 36 or 48 months or more when new transmission or generation is needed, and that the old 12 to 18 month schedules no longer apply to large campuses (CBRE, December 2025).
• Commitments come early. In Atlanta, CBRE reports build-to-suit capacity preleasing about 2.5 years before completion, against about 12 months for turnkey space (CBRE, H1 2026).
• It can be fast when power is already secured. Applied Digital broke ground on its Polaris Forge 2 campus in August 2025, signed a 200 MW lease that October, and expected first capacity in the second half of 2026 (Applied Digital 10-K).

How build-to-suit rent is set

The developer recovers its construction cost through rent, usually over a lease of 15 to 20 years (King & Spalding, April 2025). In practice rent is set so the project earns the developer a target yield on its total cost. datacenterHawk describes yield-based rents targeting 7 to 14% (datacenterHawk, 2026 deal trends).

Real contracts show the mechanism. CoreWeave's annual report describes a lease covering 393 MW at a single site with rent based on the landlord's construction cost up to a cap, totaling $13.5 to $14.4 billion over 16 years (CoreWeave 10-K). A cap like that is what keeps cost overruns from becoming your rent.

Your credit changes the developer's cost of money, and so your rent. JLL reports construction loans for top hyperscalers at spreads in the low 200s of basis points with up to 85% loan-to-cost, while projects without a credit tenant pay 200 to 300 basis points more at 70 to 80% loan-to-cost (JLL, August 2026). Tenants with less credit history can offset that with security, a parent guarantee or a third-party backstop.

Large build-to-suits also come as joint ventures. Meta's Hyperion campus is owned by a joint venture that is 80% Blue Owl and 20% Meta, with about $27 billion of development cost. Meta leases it with a four-year initial term, extension options and a residual value guarantee for the first 16 years (Meta, October 2025).

Lease terms that protect the tenant

Delivery date and remedies

A guaranteed delivery date, interim milestones you can monitor, rent credits or liquidated damages for each day of delay, and a right to terminate if delivery slips past an outside date.

Rent and the cost basis

How rent is derived from project cost, which costs count, and whether there is a cap. Cost overruns the developer controls should not flow into your rent.

Change orders

How design changes after the scope freeze are priced and how they move the schedule. Agree the method before construction, not during it.

Specification and acceptance

The basis of design, the commissioning standard and what "delivered" means. Acceptance should follow integrated systems testing, not a certificate of occupancy.

Expansion land and power

Rights to additional phases on the same campus, with the power reserved and the pricing method agreed.

Operations and maintenance

Who operates which systems, to what standard, and how operating costs are passed through under a net lease.

Assignment, sublease and sale

Your rights to assign or sublease, and what happens to your protections if the developer sells the building, which is common once it is leased.

Credit support

The security the developer needs, such as a parent guarantee or letter of credit, sized to the risk rather than to the whole term.

For the terms every wholesale lease shares, from power minimums to holdover, see what a data center lease agreement contains.

Questions to ask a build-to-suit developer

• Is the site under your control, and is it zoned for this use today?
• What does the utility commit to, in writing, on megawatts and energization date?
• Which long-lead electrical equipment is already reserved or on order?
• What have you delivered before, at this scale, and how close to schedule?
• Who are your capital partners, and is the financing committed or conditional on my lease?
• How is rent calculated from cost, and what happens to rent if costs overrun?

Frequently asked questions