Building Standard Improvements in Commercial Leases: What Tenants Need to Know

What Are Building Standard Improvements (BSI)?

Building standard improvements are the baseline construction and finish specifications that the landlord defines as the standard level for all tenant spaces in the building. Think of BSI as the landlord's "default build-out" — the minimum they'll provide (usually funded by TI allowance) to make a raw shell space usable.

BSI specifications are usually listed in a building standard exhibit or work letter attached to the lease. They describe exactly what the landlord considers "standard" for each element of the build-out. This matters because:

1. Your TI allowance is typically sized to cover BSI costs — anything above standard comes out of your pocket or from overages.
2. At lease end, the landlord typically has the right to keep all BSI improvements but may require you to remove above-standard items.
3. If you want finishes above the standard, you need to understand the cost difference and the exit obligations you're creating.

Common BSI Specifications (Office Leases)

How BSI Affects Your TI Allowance

The TI (tenant improvement) allowance is the landlord's contribution toward building out your space. In most commercial leases, this allowance is sized to cover a building-standard build-out for your square footage.

Typical BSI costs in major markets range from $35–$80 per square foot for office space in 2026 (higher in gateway cities like New York and San Francisco, lower in secondary markets). If the landlord's TI allowance is $50/SF and your actual build-out costs $80/SF, the $30/SF difference either comes from your own funds or is amortized into the rent.

The Overage Problem

When tenants want above-standard finishes, they typically have three options for covering the overage cost:

1. Pay directly: Tenant funds the overage out of pocket, either directly to the contractor or as a reimbursement to the landlord if the landlord is managing the build-out.
2. Amortize into rent: Landlord funds the overage cost and amortizes it into the base rent over the lease term. The tenant pays a higher monthly rent in exchange for nicer finishes. This is the most common approach for larger tenants with long leases.
3. Reduce scope: Tenant selects above-standard finishes in priority areas (reception, conference rooms, executive offices) and building-standard elsewhere to stay within allowance.

Landlord Recapture Rights

This is where BSI gets complicated at lease end. When your lease expires, what happens to all the improvements in the space?

Under standard commercial real estate law, improvements made to real property become fixtures — part of the building — and belong to the landlord. The landlord has the right to retain (recapture) them at no cost. This applies to:

• All construction work (walls, ceilings, floors)
• Mechanical and electrical improvements
• Built-in millwork and cabinetry
• Lighting fixtures and systems
• Most HVAC modifications

The items tenants typically get to take with them are trade fixtures — items installed for business use that can be removed without material damage to the property (manufacturing equipment, freestanding shelving, modular workstations, some signage).

Landlord Recapture: What It Means for You

Recapture is a financial reality you need to account for at the outset. If you invest $500,000 in above-standard finishes across 10,000 SF, that money stays in the building when you leave. You get no credit for it, no reimbursement, and no depreciation benefit unless you've negotiated otherwise.

This matters most when:

• You're doing a heavy custom build-out for a branded space (restaurant, gym, medical office)
• You install specialty infrastructure (server rooms, clean rooms, specialized power)
• You're uncertain about renewal and may leave before the lease ends
• Your business concept changes and the improvements don't suit your future use

Above-Standard Improvement: Removal vs. Recapture

The treatment of above-standard improvements at lease end falls into three categories. Your lease should specify which applies — if it doesn't, negotiate clarity before signing:

Depreciation and Amortization in TI Arrangements

When the landlord funds above-standard improvements (either as an enhanced TI allowance or as a loan amortized into rent), the cost is typically depreciated over the lease term for accounting purposes.

Straight-Line Amortization

The most common approach: divide the above-standard cost by the number of months in the lease term to get a monthly amortization amount. This becomes relevant in two scenarios:

1. Early termination: If the lease has an early termination option or you exercise a buyout right, you typically must pay the landlord the unamortized balance of any landlord-funded above-standard improvements as a termination payment.
2. Default: In some leases, if you default and the landlord terminates the lease, the unamortized TI balance becomes part of the landlord's damages claim.

Example: Amortized Above-Standard TI

Assume you're taking 10,000 SF for a 7-year term (84 months). Building standard TI is $50/SF ($500,000 total). You want $80/SF in finishes ($800,000 total). The landlord funds the full $800,000 and amortizes the $300,000 overage into rent at 7% annual interest:

• Monthly amortization payment: approximately $3,900/month added to base rent
• If you terminate in year 3 (after 36 months), you would owe the unamortized balance — roughly $209,000
• This is separate from any lease termination fee specified in the termination option clause

Negotiating BSI Provisions: What to Push For

1. Get a Detailed BSI Specification List

Before signing, ask for the full building standard specifications in writing. Without this, there's no way to know what your TI allowance actually covers. A vague "building standard finishes" reference in the lease creates enormous ambiguity.

2. Get Written Approval for Above-Standard Items

For every above-standard improvement, get the landlord's written approval specifying that the item is approved and whether the landlord will require removal at lease end. This should be in the work letter or an exhibit to the lease — not just an email.

3. Negotiate Removal Obligations at Signing

Don't wait until lease end to find out what you have to tear out. Negotiate a specific list of improvements the landlord agrees to keep (no removal obligation) and a specific list of items you agree to remove. This should be attached to the lease as an exhibit.

4. Cap Restoration Costs

If you have a removal obligation, try to cap the restoration cost requirement. Language like: "Tenant's restoration obligation shall not exceed the lesser of actual restoration cost or $[X] per rentable square foot."

5. Negotiate Ownership of Removable Items

If you're installing items the landlord doesn't need (custom manufacturing equipment, branded signage, specialty fixtures), explicitly designate them as tenant property and trade fixtures in the lease. This prevents disputes at move-out about what you're allowed to take.

• Obtain complete BSI specification list before signing — refuse vague "building standard" references
• Get written approval for every above-standard improvement before construction begins
• Negotiate which above-standard improvements require removal — get it in writing, attached to lease
• Clarify amortization schedule for landlord-funded above-standard TI
• Confirm unamortized balance payment formula for early termination scenarios
• Designate specialty equipment and branded items as trade fixtures / tenant property
• Cap restoration cost obligations if removal is required
• Confirm landlord approval process and timeline for above-standard construction
• Check whether above-standard improvements affect CAM costs (e.g., supplemental HVAC maintenance)
• Review indemnification provisions related to construction of above-standard improvements

Frequently Asked Questions