# What is a tenant improvement, and who pays for it?

**Short answer:** A tenant improvement is the interior build out that turns a shell or a previous occupant's space into something a new business can operate in. Who pays depends entirely on the lease. Most deals split it: the landlord funds an allowance toward the work, and the tenant pays for everything the allowance does not cover.

## Key facts

| Fact | Value | Source |
| --- | --- | --- |
| What TI usually covers | Interior partitions, finishes, systems distribution, fixtures |  |
| How an allowance is quoted | A dollar figure per rentable square foot |  |
| Who funds the overage | The tenant, in cash or amortized into rent |  |
| Usual disbursement trigger | Reimbursement after completion and lien releases |  |
| Where schedule risk sits | With whoever controls the construction contract |  |

## What the term actually covers

Tenant improvement is the construction work that makes a leased commercial space
usable by a specific occupant. Partitions, ceilings, flooring, lighting,
distribution of heating, cooling and electrical to where the tenant needs it,
plumbing for a break room, data infrastructure, millwork, doors, hardware and
finishes. On a restaurant or a medical suite it extends into grease
interceptors, exhaust, medical gas or lead lining, and the number climbs
accordingly.

What it usually does not cover is the building itself. The structure, the roof,
the exterior envelope, the base building systems and the common areas are the
landlord's, and work on them is a different category with a different budget and
a different party responsible.

The line between the two matters more than it sounds. A space that needs a new
rooftop unit because the existing one cannot serve the tenant's use is arguably
base building work, arguably tenant work, and entirely a matter of what the
lease says. Deals fall apart over exactly this item, late, after the drawings
exist.

## The allowance and how it gets negotiated

A tenant improvement allowance is a sum the landlord contributes toward the
work, almost always expressed as a dollar figure per rentable square foot. It is
not a gift. It is a leasing cost the landlord underwrites against the rent
stream, which is why the size of the allowance moves with the things that make
the rent stream more valuable.

Four factors drive it.

**Term length.** A longer lease amortizes the landlord's contribution over more
years of rent. Ten year deals attract meaningfully larger allowances than three
year deals for the same space.

**Tenant credit.** A tenant with a strong balance sheet or a corporate guarantee
is a safer place to put capital. A startup with no operating history is not, and
the allowance reflects it.

**Condition of the space.** A raw shell requires more work than a second
generation space with usable partitions and systems. Landlords generally
recognize that in the allowance, though not always dollar for dollar.

**Market conditions.** In a soft leasing market allowances rise, along with free
rent. In a tight one they compress. This is the factor tenants have the least
control over and the one that moves the number the most.

## Three delivery structures, and who carries what

| Structure | Who holds the construction contract | Who absorbs an overrun | Who controls selections |
| --- | --- | --- | --- |
| Landlord work letter | Landlord | Landlord, within the defined scope | Landlord, to a base specification |
| Turnkey build out | Landlord | Landlord, to the agreed plans | Tenant input at design, then fixed |
| Allowance with tenant-managed construction | Tenant | Tenant | Tenant |

The middle row is where most misunderstanding lives. Turnkey sounds like the
landlord absorbs everything, and within the agreed plans and specifications it
does. The moment the tenant changes something after those documents are fixed,
the change is a tenant cost, and the pricing of that change is not competitive
because the contractor is already on site and already selected.

The third row gives the tenant control over quality, contractor selection and
sequencing, and hands the tenant the risk that comes with control. For a tenant
whose space is central to its business, that trade is usually worth making. For
a tenant taking a small suite, it rarely is.

## When the build costs more than the allowance

This is the normal case, not the exception. Allowances are calibrated to a
reasonable build, and most tenants want something better than reasonable.

The overage gets handled in one of three ways.

The tenant pays cash at the end. Simple, and it hits working capital at the
worst possible moment, right when the business is also paying for furniture,
equipment, moving and a period of double rent.

The landlord funds the overage and amortizes it into rent. The additional cost
is spread across the lease term with interest, which shows up as a higher rent
figure. This is common and reasonable, and the two terms worth attention are the
interest rate and what happens to the unamortized balance on an early
termination or a default.

The scope gets cut. Value engineering after pricing comes in high is a
legitimate response, though it works best when the drawings anticipated it. A
project designed with a clear hierarchy of what matters can absorb a cut. One
designed as a single indivisible vision cannot, and the cut lands somewhere
visible.

## How the money actually reaches the contractor

Allowance disbursement is a reimbursement mechanism, not a deposit. Understanding
this early prevents a cash flow problem that surprises tenants regularly.

**The work generally gets paid for first.** In most leases the tenant funds
construction and submits for reimbursement, either progressively against
approved draws or in a single payment after completion.

**Documentation gates the payment.** Signed final approvals, unconditional lien
releases from the general contractor and subcontractors, a certificate of
occupancy or its local equivalent, and often as-built drawings.

**There is usually a deadline.** Many leases require the work to be complete and
the reimbursement requested within a defined window, after which the allowance
expires. A permitting delay can consume that window without anyone noticing
until it has.

**The landlord approves the plans.** The tenant designs, the landlord consents,
and that consent is a review step with its own duration in the schedule.

## What to settle before the lease is signed

**Define the delivery condition in writing.** What the tenant receives on day
one, described specifically enough that a contractor could price against it.
"Broom clean shell" and "warm lit shell" are different deliveries.

**Assign responsibility for base building deficiencies.** Roof, structure,
existing systems at end of life, and any accessibility upgrade triggered by the
work. Name who pays, in the document.

**Fix the amortization terms.** Rate, term and treatment on early exit.

**Confirm the allowance deadline and the disbursement documents.** Then compare
that deadline against a realistic permitting duration in the relevant
jurisdiction, not an optimistic one.

**Settle the restoration obligation.** What has to be removed at the end of the
term is a cost that arrives years later and is easy to agree to carelessly.

Lease terms are a legal matter, and every point above belongs in front of the
tenant's own counsel before signature rather than after. A builder can tell you
what the work will cost and how long it will take. Only an attorney should tell
you what the lease obligates you to.

## Reading a deal by who holds the risk

Strip away the language and every tenant improvement arrangement answers two
questions: who signs the construction contract, and who pays when the number
moves. Everything else is detail arranged around those answers.

A tenant who signs the contract controls the outcome and owns the risk. A
landlord who signs it owns the risk and controls the outcome. Allowances,
amortization and work letters are the mechanisms for splitting the difference,
and the split is negotiable in a way most tenants do not test.

The most useful thing a tenant can do before negotiating is get a real
construction estimate against a real space plan, early enough that the allowance
conversation is grounded in a number rather than a hope. That estimate is
inexpensive relative to the lease it informs, and it is the work that sits at
the front of most [commercial development](/commercial-development)
engagements. Related questions about delivery and underwriting are collected
under [commercial insights](/insights/topics/commercial).

## Frequently asked questions

### What is the difference between a turnkey build out and an allowance?

In a turnkey deal the landlord delivers the finished space to an agreed set of plans and specifications, and carries the cost and schedule risk of getting there. With an allowance the landlord contributes a fixed sum and the tenant manages the work, which means the tenant absorbs overruns and delays. Turnkey trades control for certainty, and the tenant gives up input on selections.

### Can unused allowance money be taken as free rent instead?

Sometimes, if the lease says so. Some leases allow a portion of an unused allowance to be applied as a rent credit, and many do not, treating anything unspent as forfeited to the landlord. This is a negotiated point rather than a market default, and it should be settled in the lease document rather than assumed. Have counsel confirm the language before signing.

### Who owns the improvements when the lease ends?

Usually the landlord, since fixed improvements generally become part of the building. Trade fixtures and equipment a tenant installs often remain the tenant's property and may have to be removed. Many leases also include a restoration obligation requiring the tenant to return the space to a defined condition, which can be a meaningful end-of-term expense. The lease language controls, so read it early.

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Source: https://www.tricanagroup.com/insights/what-is-a-tenant-improvement-and-who-pays-for-it
Topic: Commercial & Investment
Author: Hagop Sargisian, Tricana Group
Area served: Los Angeles County, CA; Orange County, CA
Published: 2026-06-09T09:00:00-07:00