What’s the average TI allowance per square foot for Class B office space in 2027?

Options compared: turnkey buildout, TI allowance, and as-is space

Every Class B office deal resolves into one of three delivery structures, and the per-square-foot allowance number you fixate on only matters in one of them. Understanding which structure you are actually negotiating is more important than the headline dollar figure, because the three shift risk in completely different directions.

Turnkey (landlord-delivered). The landlord builds the space to an agreed plan and delivers it finished. You sign off on a space plan and a finish schedule; the landlord's construction manager runs the job; you take occupancy when the certificate of occupancy issues. There is no per-foot allowance in the lease at all — instead there is a plan, a spec, and a delivery date. Turnkey is the lowest-risk option for a tenant with no construction expertise, and it is common in Class B when the landlord has an in-house construction arm or a repeat general contractor working the building. The trade-off: you lose control over material selection and you have no visibility into the actual cost. If the landlord builds it for less than they budgeted, you never see the savings. And "turnkey" in a Class B work letter almost always means turnkey *to building standard* — the landlord's cheapest compliant finish — so any upgrade you want becomes a tenant change order priced without competitive bidding.

TI allowance (tenant-managed). The landlord commits a dollar figure, usually expressed as $X per rentable square foot, and you manage the buildout. You hire the architect, you hire the general contractor, you approve the change orders, and you submit draw requests against the allowance as the work completes. This gives you real control: you can spend the money where it matters to your operation and skip the finishes nobody notices. It also gives you real exposure. You own the schedule, you own the permit risk, and you own every dollar of overrun. In a Class B building with unknown conditions above the ceiling — abandoned conduit, undersized panels, ductwork that does not match the as-builts — overruns are the norm rather than the exception.

As-is (with or without rent concessions). You take the space in its current condition. This is the structure for second-generation space where the prior tenant's buildout roughly matches your needs, and it dominates the sublease market. There is typically no allowance whatsoever. What you negotiate instead is free rent, a reduced base rate, or a modest "refresh" credit for paint and carpet. As-is is the fastest path to occupancy — sometimes thirty days versus six months — and for a company that cares more about a start date than a floor plan, it is frequently the best commercial outcome even though the allowance line reads zero.

The comparison that matters: turnkey converts capital risk into schedule and spec risk. An allowance converts spec control into capital risk. As-is eliminates both risks and eliminates the improvement. Class B landlords, who are generally more capital-constrained than their Class A peers, increasingly push tenants toward as-is or a capped turnkey precisely because those structures bound their exposure.

How to choose the right delivery structure

The decision is not about which structure sounds most generous. It is about matching the structure to your organization's actual capacity to absorb risk, your occupancy deadline, and how much the physical space affects how your teams work.

Start with the *fit gap*: how far is the existing condition from what you need? Walk the space with your architect before you trade term sheets. If the prior tenant was a similarly-sized professional services firm and the layout is 80% right, you are an as-is candidate and you should be negotiating rent abatement, not allowance dollars. If you need a lab, a call floor with dense power and cooling, a SOC with controlled access, or anything involving demolition of permanent walls, you are in allowance or turnkey territory and the gap will be substantial.

Then assess *internal capacity*. Managing a commercial buildout is a genuine job. Somebody has to review submittals, sign change orders within 48 hours to avoid schedule slippage, coordinate the furniture install against the punch list, and chase the AHJ for inspection dates. If nobody on your team has done that before and you are not hiring an owner's representative, take turnkey and accept building standard finishes. The most expensive Class B fit-outs are the ones where a tenant took an allowance to "save money" and then let the project run for eleven months because no internal decision-maker was available.

Third, weigh *credit and term flexibility*. A well-capitalized tenant with audited financials can push for a larger allowance because the landlord's underwriting risk is lower. A three-person startup with a personal guarantee will get a smaller number, and should probably take as-is space and spend the capital on the business instead. There is a real strategic argument that any dollar you spend on leasehold improvements in a Class B building is a dollar you can never recover — the improvements belong to the landlord at lease end.

Fourth, consider *the downstream effects on adjacent budgets*. Every fit-out decision ripples into furniture, AV, network cabling, security systems, and the moving budget. Structured cabling and AV are frequently excluded from the allowance entirely, which means a "generous" allowance can still leave a six-figure hole in a mid-sized office project. Map the full occupancy cost before you compare structures. The same logic applies in neighboring asset classes: retail tenants comparing a landlord's vanilla-box delivery against a cash allowance run precisely this calculus, and industrial tenants weighing an office-warehouse fit-out face the same question about who owns the schedule risk.

The output of this decision tree should be settled before you exchange a letter of intent. Reversing it later — deciding mid-negotiation that you want to manage the work after the landlord already priced a turnkey — costs weeks and signals disorganization to a landlord who is reading your seriousness as a counterparty.

Concrete numbers, timelines, and what drives the spread

Because there is no reliable single average for Class B office in 2027, the useful exercise is understanding the *variables* that determine your number, and the timeline attached to each path. Do the arithmetic on your own deal rather than importing a headline figure from a national report.

The underwriting formula landlords actually use. A landlord funds a TI allowance out of the net effective rent they expect to collect. The mechanics: take the annual base rent per square foot, multiply by the lease term in years, subtract free rent, subtract leasing commissions, subtract their required return on the capital, and what remains is the pool available for improvements. This is why term length is the single most powerful lever a tenant controls. Doubling a lease from five years to ten roughly doubles the rent stream the landlord is amortizing against, and a landlord who could not justify a meaningful allowance on a short deal will often find the money for a long one. It is also why a mid-lease expansion into contiguous space frequently carries a weaker allowance than the original deal — there are fewer remaining years to amortize.

Where the money goes in a Class B fit-out. The cost stack is fairly consistent regardless of market. Demolition and general conditions come first. Then framing and drywall, which scales directly with how many private offices and conference rooms you build — an open plan is dramatically cheaper per square foot than a heavily walled plan. Then mechanical, electrical, and plumbing, which is where Class B buildings punish you: older HVAC distribution often cannot serve a new floor plan without added VAV boxes, and older electrical panels may lack capacity for modern density. Then ceilings, flooring, paint, doors and hardware, millwork, and finally low-voltage cabling. Millwork — a reception desk, a real kitchen, custom casework — is the most common source of budget surprise because it is quoted late and it is entirely discretionary until somebody sees the rendering.

Soft costs are the silent overrun. Architectural and engineering design, permit fees, expediting, testing and inspections, and project management typically add a meaningful percentage on top of hard construction cost. Many Class B work letters exclude soft costs from the allowance entirely, or cap the reimbursable portion. Negotiating soft costs *into* the allowance is often easier than negotiating the allowance itself upward, because it does not change the landlord's headline number.

Realistic timelines. As-is space with a light refresh: two to six weeks. A cosmetic refresh — paint, carpet, LED retrofit, no permit-triggering work — commonly runs four to eight weeks. A moderate reconfiguration requiring a building permit: expect design to take four to eight weeks, permitting anywhere from three weeks to several months depending on the jurisdiction, and construction twelve to twenty weeks. A full-floor gut of Class B space with new MEP distribution can easily run nine to twelve months end-to-end. Long-lead items are the usual schedule killers: electrical switchgear, custom glass, and certain HVAC equipment have carried extended lead times, and a single delayed rooftop unit can hold up a certificate of occupancy.

The gap and how to close it. In most markets a full Class B fit-out costs more than the allowance offered, so plan for a gap rather than being surprised by one. Four ways to bridge it, roughly in order of tenant preference: negotiate additional free rent, which is pure cash flow relief and costs the landlord less than writing a check; negotiate a landlord over-allowance amortized into base rent at a stated interest rate — get the rate in writing, because an unstated rate defaults to whatever the landlord claims their cost of capital is; extend the term in exchange for more dollars; or reduce scope, which is the honest answer more often than anyone admits. Value-engineering an open plan, keeping the existing ceiling grid, and reusing serviceable doors and frames can absorb a large share of a gap without anyone noticing in daily use.

Watch the escalation clauses too. In deals signed well ahead of occupancy, construction cost escalation between signing and permit issuance is a live risk. If your allowance is a fixed dollar figure and your buildout is eighteen months out, inflation erodes the real value of that allowance. A sophisticated tenant asks for an escalation adjustment tied to a published construction cost index, or at minimum a shorter window between lease execution and construction start.

Contract language, draw mechanics, and the handoff

The commercial terms live in the work letter, which is an exhibit to the lease and is frequently drafted with far less care than the lease body. Read it as closely as you read the rent schedule, because it governs whether you actually receive the money.

Define the measurement. An allowance quoted "per square foot" must specify rentable versus usable square feet. In a Class B building with a load factor, the difference between rentable and usable can be more than ten percent of the total dollars. The lease should state the rentable area as a fixed number, not a formula the landlord can re-measure.

Define what is reimbursable. List the categories explicitly: hard construction costs, architectural and engineering fees, permit and plan-check fees, project management, low-voltage cabling, and — if you can get it — furniture, signage, and moving costs. Anything not listed will be contested at draw time. Where the landlord refuses to fund FF&E from the allowance, ask whether unused allowance can be applied to rent credit; the default is that unused allowance is forfeited, and that default costs tenants real money every year.

Define the draw process. The standard mechanic is progress draws: the tenant submits an application for payment with lien waivers from the general contractor and subcontractors, the landlord's representative inspects, and funds release within a stated number of days. Push for a defined turnaround — thirty days is common, and anything longer means you are float-financing the landlord's improvement. Also negotiate the retainage: landlords often hold back a percentage until final completion and lien waiver delivery, which can strand a meaningful sum for months after occupancy.

Tie rent commencement to substantial completion, not lease execution. This is the single most valuable clause in the document. If the landlord controls the construction and the delivery slips, rent should not start running. Where the tenant controls construction, negotiate a fixed outside date with a tenant delay carve-out — you accept responsibility for delays you cause, the landlord accepts responsibility for base-building delays and permit issues arising from existing conditions.

Address existing conditions and code compliance directly. Class B buildings carry legacy conditions: non-compliant restrooms, path-of-travel issues, undocumented asbestos-containing materials in older ceiling tile or floor mastic, and electrical service that predates current code. Trigger provisions matter enormously — in many jurisdictions a permitted alteration above a cost threshold obligates accessibility upgrades to common areas. Those upgrades should be a landlord obligation funded outside the allowance, not a surprise line item that consumes a quarter of your improvement budget. Get a hazardous-materials representation and a landlord obligation to abate at its own cost.

Approval rights and the contractor question. Landlords typically retain approval over plans, the general contractor, and any subcontractor touching base-building systems. Approval should be "not to be unreasonably withheld, conditioned, or delayed," with a deemed-approval period — if the landlord does not respond in ten business days, the submission is approved. Where the landlord mandates its own contractor for MEP work, negotiate the right to see the bid and to require competitive pricing; a sole-source mechanical subcontractor with no competitive pressure is an open invitation to inflated pricing against your allowance.

Restoration and removal obligations. Buried near the end of most work letters is a clause requiring the tenant to remove specialty improvements at lease end. A vault, a raised floor, an internal stair, a data center's supplemental cooling — all can trigger six-figure removal costs years later. The time to negotiate this is now: get a written schedule of improvements that do *not* require removal, signed at the time the plans are approved.

The handoff itself deserves a checklist. At closeout you want as-built drawings, the operations and maintenance manuals, warranty documentation with start dates tied to substantial completion rather than equipment delivery, keys and access credentials, and a written punch list with completion dates. Missing warranty paperwork on a new rooftop unit is the kind of omission nobody notices until the compressor fails in month fourteen.

Where this shows up beyond the Class B office lease

The allowance-versus-turnkey question is not unique to commercial office, and looking at the adjacent cases sharpens the office negotiation.

In retail, landlords commonly deliver a "vanilla box" — demised walls, a finished ceiling, basic lighting, HVAC, and a restroom — and then offer a separate allowance for the tenant's trade fixtures and branding. The vanilla box is functionally a turnkey base with an allowance layered on top, and office tenants can borrow the structure: negotiate a landlord-delivered base condition *plus* an allowance, rather than one or the other.

In medical office, allowances run materially higher than general office because the buildout is genuinely more expensive — medical gas, lead-lined walls for imaging, additional plumbing, and stricter mechanical requirements. Medical leases also run longer, which feeds the amortization math. If you are a general office tenant looking at a building with medical tenancy, the landlord already has a construction program and approved contractors, which can work in your favor on pricing.

In industrial and flex space, the office component of a warehouse is priced almost as a separate project, and landlords frequently quote a fixed dollar amount for the office finish rather than a per-square-foot allowance across the whole premises. That "lump sum, not per-foot" framing is often the better structure for an office tenant too, because it removes any argument about measurement.

And in coworking or managed-office arrangements, the entire question disappears — the operator has already spent the capital and recovers it through a higher all-in monthly rate. For a company under about twenty people, or one with genuine uncertainty about headcount in two years, the fully-loaded coworking rate frequently beats the true cost of a conventional lease once you add improvement gap, furniture, cabling, and the internal time cost of running a construction project. Run that comparison honestly before assuming a direct lease is cheaper.

The common thread across all of these: the allowance is never a gift. It is landlord capital advanced against your rent stream, priced into the deal one way or another. The tenant who negotiates well is not the one who extracts the biggest per-foot number — it is the one who understands what the number is buying, what it excludes, and what the total occupancy cost looks like after the last invoice clears.

Related questions

Is a TI allowance taxable income to the tenant?

Treatment depends on structure and jurisdiction. A landlord-funded improvement the landlord owns is generally not tenant income; a cash payment to the tenant may be. Qualified lessee construction allowances have specific safe-harbor rules. Confirm with your tax advisor before choosing the structure.

Can I keep unused TI allowance?

Usually not. Most work letters make unused allowance forfeit at a stated deadline. Negotiate either a rent credit for the unused portion or the right to apply it to furniture, cabling, and moving costs — landlords concede this more often than tenants ask.

Do sublease deals include a TI allowance?

Rarely. Sublessees typically inherit the existing buildout as-is. Any improvement money must come from the sublandlord, who has little incentive to fund it. Price your required modifications into the sublease rate, and confirm the master landlord will consent to alterations.

How does tenant credit affect the allowance offered?

Substantially. The allowance is landlord capital at risk against your future rent payments. Strong audited financials, a parent guaranty, or a letter of credit all reduce that risk and support a larger number. Weak credit typically means a smaller allowance and a larger security deposit.

Should I hire an owner's representative?

If the project exceeds a few thousand square feet of real construction and nobody internally has run a buildout, yes. An owner's rep manages bidding, schedule, and change orders, and their fee is often reimbursable from the allowance as a project management cost.

FAQ

What is the difference between rentable and usable square feet for allowance purposes?

Rentable square footage includes your pro-rata share of common areas; usable is the space inside your demising walls. Allowances quoted per rentable foot yield more total dollars than the same figure quoted per usable foot. Always confirm which basis applies and fix the rentable number in the lease so it cannot be re-measured later.

Does the allowance cover furniture, cabling, and moving costs?

By default, no. Standard work letters fund construction and sometimes design fees. Low-voltage cabling is negotiable and often included. Furniture, AV equipment, signage, and moving are usually excluded, though landlords will sometimes permit a capped portion of the allowance to be applied to them — ask explicitly and get it in the document.

What happens if construction costs exceed the allowance?

The tenant pays the difference, typically by depositing the projected overage with the landlord before construction starts or by funding draws directly once the allowance is exhausted. Negotiate in advance whether the landlord will fund an over-allowance amortized into rent, and pin down the interest rate applied to that amortization.

Can I negotiate a higher allowance instead of free rent?

Yes, and the trade is common. Landlords generally prefer giving allowance dollars over free rent because improvements add lasting value to their asset while abated rent is a pure loss. Tenants often prefer free rent because it is unrestricted cash. Price both against your actual buildout gap before choosing.

When does rent start if the buildout runs late?

That depends entirely on the lease language. Tie rent commencement to substantial completion with a tenant-delay carve-out, so you only absorb delays you cause. Without that clause, rent starts on the stated date regardless of whether the space is usable — a costly default in a market where permits routinely slip.

Who owns the improvements at the end of the lease?

The landlord, in almost every case. Leasehold improvements become part of the building. That is why a tenant should treat improvement spend as an occupancy expense rather than an asset, and why negotiating a written list of improvements exempt from end-of-term removal obligations matters before construction begins.

Sources

• https://www.cbre.com/insights
• https://www.us.jll.com/en/trends-and-insights
• https://www.cushmanwakefield.com/en/united-states/insights
• https://www.boma.org/
• https://www.ifma.org/
• https://www.colliers.com/en/research
• https://www.nar.realtor/commercial
• https://www.irs.gov/pub/irs-drop/rp-04-12.pdf
• https://www.ada.gov/resources/title-iii-primer/

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