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The space you lease is rarely move-in ready — and who pays to fix that is worth real money.

Few commercial spaces are ready to use as-is; most need a build-out — construction and improvements to fit the tenant’s needs. Who performs that work, who pays for it, who owns the result, and what happens to it at move-out are all governed by the lease’s tenant improvement provisions. These terms can involve significant money and are highly negotiable, yet tenants often underestimate them. This guide explains how build-out and tenant improvement provisions work and what to negotiate to protect your investment.

We help businesses get this right from the start. This is general information, not advice on a specific situation.

The space you lease is rarely move-in ready — and who pays to fix that is real money.

What build-out and tenant improvements are

Build-out, or tenant improvement (TI) work, is the construction and modification needed to make a commercial space usable for the tenant’s business — walls, flooring, fixtures, electrical, plumbing, and finishes. The lease governs this work as part of the overall contract between the parties; as the law.cornell.edu concept reflects, the lease allocates these rights and responsibilities. Build-out can represent a major cost, sometimes rivaling months of rent, and the terms determine who bears it. Because the amounts are significant and the terms negotiable, TI provisions deserve careful attention rather than being treated as boilerplate.

Improvements you pay for may belong to the landlord at move-out.

Who pays: the tenant improvement allowance

A central question is who funds the build-out. Often the landlord provides a tenant improvement allowance — a set amount contributed toward the work — with the tenant covering costs beyond it. The size of the allowance, what it can be spent on, and how it’s disbursed are all negotiable and materially affect the tenant’s out-of-pocket cost. Sometimes the landlord performs the work; sometimes the tenant does. The Small Business Administration’s guidance on sba.gov underscores how build-out costs factor into occupancy expense. Negotiating a strong allowance and clear terms can save a tenant substantial money.

Who does the work and who owns it

The lease should specify who performs the build-out, who controls the design and contractor selection, timelines, and approval rights. It should also address ownership of the improvements — often, improvements become the landlord’s property, meaning the tenant may pay for work that it doesn’t own at lease end. Understanding this is important: a tenant funding significant improvements is often enhancing the landlord’s asset. Clarity on control, quality, timing, and ownership prevents disputes during construction and at the end of the term, and factors into whether the deal makes financial sense for the tenant.

Restoration and end-of-lease obligations

A frequently overlooked provision governs what happens to the improvements at move-out. Some leases require the tenant to restore the space to its original condition — removing improvements and repairing — which can be a substantial, unexpected cost at lease end. Others let improvements remain. Clarifying restoration obligations up front, and negotiating to limit or waive them where possible, prevents a costly surprise when the lease ends. Combined with the allowance and ownership terms, the restoration provision completes the picture of the true cost of building out a space — a picture every tenant should have clearly before signing.

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