When is the right time to start a buildout before my lease begins in 2027?

The commercial deal in plain terms

A commercial lease and a buildout are two separate transactions that people habitually treat as one. The lease governs who occupies the space, for how long, at what rent, and under what conditions. The buildout — sometimes called tenant improvements, TI, or fit-out — governs who physically alters the space, who designs those alterations, who pays for them, and who owns them when the lease ends. Getting the sequencing right between these two documents is the single largest determinant of whether your 2027 opening lands on schedule.

The critical concept is rent commencement versus lease commencement. Lease commencement is typically the date you take possession of the space. Rent commencement is when you start paying. In a well-negotiated deal these are different dates, and the gap between them is your free-rent or construction period. If you get 90 days of abated rent to build and your buildout takes 150 days, you are paying rent on an empty shell for two months before you can generate a dollar of revenue. On a 3,000-square-foot retail space at $30 per square foot annually, that is roughly $7,500 per month burning with no offsetting income.

The second concept is the tenant improvement allowance. Landlords in most markets contribute capital toward the buildout, expressed as dollars per square foot — commonly somewhere between $10 and $60 per square foot depending on market, asset class, lease term, and how badly the landlord wants your credit on their rent roll. A 10-year lease on second-generation office space will pull a materially larger allowance than a 3-year lease on prime retail. That allowance is not a gift; it is capital the landlord amortizes into your rent. A larger TI package almost always comes with a higher base rent, a longer term, or both. Model the total cost of occupancy across the full term rather than fixating on the allowance number in isolation.

Third: how the allowance is disbursed. This is where the timing question gets sharp. Most allowances are reimbursement-based. You pay your general contractor, you submit lien waivers and paid invoices, and the landlord reimburses within 30 to 45 days — often only after substantial completion and delivery of a certificate of occupancy. That means you float the entire buildout cost out of your own working capital for weeks or months. If you assumed the landlord's money would fund the work in real time, you will discover the gap at the worst possible moment. Negotiate progress draws — monthly disbursements against percentage of completion — if you have any leverage at all.

Fourth: delivery condition. A lease will specify what the landlord hands you. "Cold dark shell" means bare concrete, no HVAC, no electrical distribution, no plumbing beyond a stub, sometimes no demised walls. "Warm shell" typically includes the building envelope, HVAC to the space, electrical service, and a restroom. "Second generation" means the previous tenant's improvements are still standing and you inherit them. The difference between cold shell and second generation can be $60 or more per square foot in your own cost. Read this clause before you build any budget, because the entire timeline scales off it.

Finally, understand who owns the improvements. In almost all commercial leases, permanent improvements become the landlord's property at lease expiration. Your trade fixtures and removable equipment stay yours. The lease should say so explicitly, and it should also specify whether you have a restoration obligation — a requirement to return the space to its original condition at your cost. A restoration clause on a heavily built-out space can represent a five-figure liability sitting quietly at the end of your term. Strike it or cap it during negotiation, when you still have leverage, not in 2037 when you have none.

How the buildout process flows

The sequence below is where the timing answer actually lives. Each stage has a realistic duration, and the stages that gate everything else are permitting and long-lead equipment procurement. Working backward from a target 2027 open date is the only reliable way to know when to start.

Typical durations for a modest commercial space — call it 2,000 to 5,000 square feet of office, retail, or light service use:

• Test fit and preliminary pricing: 2–4 weeks. An architect produces a rough layout; a contractor prices it at a conceptual level. This exists to tell you whether the space works before you commit to lease terms.
• Lease negotiation: 4–10 weeks for a straightforward deal, longer if the landlord is institutional or the space needs subdivision. Letter of intent to executed document rarely moves faster than a month.
• Construction documents: 4–8 weeks. The architect and engineers produce the drawing set that gets submitted for permit. Restaurants and medical uses run longer because of the additional consultants involved.
• Permitting: 4 weeks to 6 months, wildly jurisdiction-dependent. Some municipalities offer over-the-counter approval for simple tenant improvements. Others take three months for first comments alone. Health department review for food service and state licensing review for medical add independent, parallel tracks that do not run on the building department's clock.
• Construction: 8–20 weeks for straightforward office or retail. Restaurants, labs, and clinics run 16–30 weeks because of mechanical and plumbing complexity.
• Inspections and certificate of occupancy: 1–4 weeks after substantial completion, assuming you pass. Failed inspections add a week each in most jurisdictions.

Add those up honestly and a simple buildout consumes 6 to 9 months from LOI to open. A restaurant or clinic pushes 10 to 14 months. That is why the answer to "when should I start" is 9 to 12 months before you want to open, with the front half of that window spent on paper and the back half on construction.

The critical path deserves specific attention. Permitting and long-lead procurement are the two items that can sit on your schedule for months while nothing visible happens. Rooftop HVAC units, electrical switchgear, custom millwork, and specialty commercial kitchen equipment have all carried extended lead times in recent years, and in some categories quoted lead times still run well beyond what they did before 2020. Order these the moment your drawings are stable, even if permits are still in review — the deposit at risk is far smaller than the cost of a finished space waiting on a rooftop unit.

Costs per square foot, timelines, and ranges

Budget in dollars per square foot and you can sanity-check any contractor's number in about ninety seconds. These are broad national ranges and vary substantially by metro, labor market, and building age — a buildout in a high-cost coastal city can run double a secondary market for identical scope.

Basic office refresh — paint, carpet, minor reconfiguration on second-generation space: roughly $25–$60 per square foot. Fast, 6–10 weeks of construction, often permit-light.

Standard office buildout on warm shell — new walls, doors, ceilings, lighting, HVAC distribution, data cabling: roughly $75–$150 per square foot. Twelve to eighteen weeks.

Retail buildout — storefront, flooring, fixtures, lighting package, point-of-sale infrastructure: roughly $80–$200 per square foot. Fixtures and millwork drive most of the variance, and they are often carried outside the construction contract entirely.

Restaurant buildout — the expensive one. Hood systems, grease interceptors, upgraded electrical service, walk-in coolers, additional restrooms, gas service: commonly $200–$500 per square foot, and higher for full-service concepts in cold-shell space. Equipment alone frequently runs six figures for a modest full-service kitchen.

Medical and dental — lead-lined walls for imaging, specialized plumbing, vacuum and compressed air lines, ADA-compliant clinical layouts: commonly $150–$400 per square foot with long permitting because of state health department involvement.

Light industrial and warehouse — often the cheapest per foot because so much square footage stays as-is: office portions price like office, warehouse portions might be $15–$40 per square foot for lighting, racking prep, and dock work.

Layer these additional costs on top of the construction contract, because contractors quote construction and nothing else:

• Architecture and engineering: typically 6–12% of construction cost, sometimes a flat fee for smaller projects.
• Permit fees: often 1–3% of construction value, plus impact fees in growing municipalities that can be substantial for use changes.
• Furniture, fixtures, and equipment: varies enormously. Office FF&E commonly runs $15–$40 per square foot; restaurant equipment prices as a separate capital line.
• Technology: low-voltage cabling, network gear, security, and audiovisual commonly run $8–$25 per square foot and are frequently forgotten until framing is complete.
• Signage: exterior signage often requires its own permit on its own timeline, and in some jurisdictions that timeline is longer than the building permit.
• Contingency: 10–15% of hard costs, non-negotiable. Projects that skip contingency do not come in under budget; they come in over budget with an angry conversation attached.

For a concrete example: 3,000 square feet of warm-shell office at $110 per square foot in hard costs is $330,000. Add 8% design ($26,400), 2% permits ($6,600), $25 per square foot FF&E ($75,000), $12 per square foot technology ($36,000), and 12% contingency on hard costs ($39,600). Total project: roughly $513,000. If the landlord offers $40 per square foot in TI allowance, that is $120,000 — meaningful, but it covers well under a quarter of the real number. Tenants who budget only against the construction contract routinely discover a six-figure shortfall around week eight.

Where budgets and schedules slip

The failures are predictable and repeat across markets, industries, and project sizes. Knowing them in advance is most of the defense.

Building the wrong space. The most expensive mistake is signing a lease on a space that fights your use. A 20-foot ceiling with no gas service becomes a punishing restaurant conversion. A second-floor space with a single stairwell fails occupancy math for assembly use. Have your architect and contractor walk the space before the lease is executed — not after. A $2,500 feasibility review has saved tenants six-figure change orders more times than anyone can count.

Assuming existing conditions are code-compliant. They usually are not. Triggering a permit often triggers upgrade requirements: ADA restrooms, accessible path of travel from the parking lot, fire sprinkler modifications, updated egress lighting. These are not optional, they are not in your contractor's original bid, and they surface during plan review when your schedule is already committed. Budget for the possibility explicitly.

Underestimating permit timelines. Contractors quote construction duration; they do not control the building department. Adding 4–8 weeks of buffer to whatever the jurisdiction publishes is realistic. Health department and state licensing reviews run in parallel and on their own schedules. If a use change is involved — retail to restaurant, office to medical — add zoning review, and possibly a public hearing, which can add months on its own.

Change orders. The industry pattern is unmistakable: change orders arrive at rates that regularly reach 10–20% of the original contract on tenant improvement work. Some are legitimate discoveries in an existing building — asbestos in floor tile, undersized electrical service, structure not where the as-builts said it was. Others are scope you added mid-stream. The discipline is freezing design before construction starts. Every decision deferred into the field costs multiples of what it costs on paper.

Long-lead item denial. Ordering a rooftop HVAC unit after permits are issued rather than when drawings stabilize can add many weeks to a schedule, sometimes months. The same applies to electrical gear, custom storefront glass, and commercial kitchen equipment. Ask your contractor for a written long-lead list during bidding — not after contract signing.

Landlord-side delays. If the landlord's scope includes delivering HVAC, a demising wall, or utility service, their contractor's schedule becomes your critical path with none of your control. The lease should contain an outside delivery date with a remedy: additional free rent per day of delay, or a termination right past some threshold. Without it you have a grievance and no leverage.

Cash-flow mismatch on the TI allowance. Reimbursement lags substantially. Plan working capital as if the allowance arrives 60–90 days after substantial completion, because it frequently does. Some tenants finance the gap with a construction line of credit; others negotiate progress draws. Assuming the money shows up on time is how otherwise-healthy projects hit a liquidity wall in month four.

Adjacent operational timing that nobody schedules. The construction schedule is not the opening schedule. Occupancy permit in hand still leaves you needing a business license, a health permit, a liquor license where applicable, merchant processing, utility accounts in your name, insurance certificates the landlord must approve, staff hired and trained, inventory delivered, and — for anything customer-facing — a marketing runway. Liquor licensing in particular can run several months and is largely outside your control. Run these as a parallel track starting the day the lease is signed, not the week the contractor finishes. A space that is physically complete and legally unable to open is the most demoralizing outcome in the whole exercise.

Insurance and lender requirements. Landlords typically require specific coverage before construction begins — builder's risk, general liability at stated limits, sometimes a waiver of subrogation. If you are financing the buildout through an SBA 7(a) or 504 loan, the lender's underwriting and disbursement schedule adds weeks and imposes its own documentation requirements. Start the lender conversation at LOI, not at lease execution.

Decision framework

Working backward from your target open date is the only method that produces a defensible start date. The flow below converts a 2027 opening into a specific month for each upstream commitment.

Applied concretely: a retail concept targeting a September 2027 opening in second-generation warm-shell space with no use change should have an executed letter of intent around December 2026 and a signed lease by roughly February 2027, with construction starting in spring. A restaurant targeting the same September 2027 date, in cold shell, with a use change from retail, should be in active lease negotiation in the summer of 2026 — more than a year ahead.

Three decision rules are worth holding firmly.

Do not spend meaningful money before the lease is executed. A test fit and a preliminary budget are reasonable pre-lease expenditures, typically a few thousand dollars. A full construction document set is not. Tenants who commission complete drawings during negotiation and then lose the space on a term disagreement have paid $20,000-plus for paper they cannot use. Wait for signatures on the substantive items.

Do not sign a lease before you have a real budget. The mirror-image error. Signing on the assumption that the buildout "runs maybe a hundred a foot" and then discovering the actual number is $180 leaves you holding a ten-year obligation on space you cannot afford to finish. Get a contractor's conceptual estimate from a test fit before the lease is final. It costs almost nothing and it is the highest-leverage two weeks in the entire process.

Negotiate the construction period explicitly, not implicitly. Do not accept "rent commences 60 days after possession" when your contractor says the work takes 120. Ask for free rent covering the realistic construction duration plus buffer, and ask for the meter to start on permit issuance rather than possession — that shifts permit-delay risk to a party that can absorb it better than you can. Landlords grant these concessions more readily than tenants expect, particularly on longer terms and in softer submarkets. The right time to ask is during the letter of intent, when you still have alternatives.

One broader consideration: buildout timing interacts with the rest of your capital plan. Money spent on improvements is money not spent on inventory, payroll runway, or marketing at launch. Many operators would be better served taking a second-generation space with 80% of the ideal layout and preserving $150,000 of working capital than building the perfect space and opening undercapitalized. The buildout is a means to an operating business, not the point of it. Second-generation space in your exact use — a former restaurant for a restaurant, a former clinic for a clinic — is the single largest cost lever available, frequently cutting both budget and schedule roughly in half.

Related questions

Can I start construction before the lease is fully signed?

Technically yes with a landlord-issued early access or license agreement, but it is risky. You would be improving property you have no right to occupy. If negotiations collapse, you have no recourse for the spend. Limit pre-execution work to design and pricing.

What happens if my buildout runs past the free-rent period?

You start paying rent on an unopened space. Most leases contain no relief for tenant-caused delay. Negotiate a longer abatement period upfront, or tie rent commencement to certificate of occupancy rather than a fixed calendar date.

Does the landlord's TI allowance cover furniture and equipment?

Usually not. Most allowances are restricted to permanent improvements — anything that stays with the building. Furniture, removable fixtures, and equipment typically fall outside. Some landlords permit a portion, often 10–20%, to be applied to soft costs. Ask explicitly and get it written into the work letter.

Should I hire the landlord's recommended general contractor?

Sometimes. A contractor who knows the building, the property manager, and the local inspectors can move faster. But bid it against two independent contractors anyway. The convenience is real; so is the pricing risk when there is no competitive tension.

How does this change if I am buying the building instead of leasing?

You control the schedule and keep the asset value of the improvements, but you also carry the full cost with no allowance and take on financing timelines. SBA 504 loans commonly fund owner-occupied purchases with renovation, though underwriting adds 60–90 days to your front end.

FAQ

How far before my 2027 lease begins should I start planning the buildout?

Begin planning 9–12 months before your target open date for standard office or retail, and 12–18 months for restaurants, clinics, or anything requiring a use change. The planning phase — space selection, test fit, budgeting, lease negotiation — consumes roughly half that window before a single wall goes up. Starting the process early costs almost nothing; starting late costs rent on a space you cannot open.

What is a work letter and why does it matter for timing?

The work letter is the lease exhibit governing the buildout. It defines delivery condition, who designs what, who builds what, how the allowance is disbursed, what the approval turnaround times are, and what happens when either party is late. It is where the schedule is actually built. Negotiate specific deadlines into it — landlord plan approval within 10 business days, allowance disbursement within 30 days of documentation — because vague language becomes weeks of dead time later.

Is it cheaper to take a second-generation space than to build from shell?

Almost always, and it is faster. Inheriting functional restrooms, HVAC distribution, ceilings, and electrical infrastructure can cut both cost and schedule dramatically, particularly when the prior use matches yours. The trade-off is layout compromise. For most small businesses that compromise is worth taking, because preserved working capital is more valuable at launch than an ideal floor plan.

What should I put in the lease to protect my schedule?

An outside delivery date with a real remedy, rent commencement tied to certificate of occupancy or permit issuance rather than a fixed date, defined landlord approval turnaround times, a clear delivery-condition definition, progress-based allowance disbursement, and an early-access period for fixture and equipment installation before rent starts. Each of these converts schedule risk from your balance sheet to the landlord's.

How much contingency should I carry?

Ten to fifteen percent of hard construction costs at minimum, and toward the upper end in older buildings where existing conditions are unknown. Renovation work in an existing structure reliably produces surprises — undersized panels, unexpected structure, code upgrades triggered by the permit. A contingency you do not spend becomes working capital. A contingency you did not budget becomes a financing emergency.

Can I negotiate a larger TI allowance instead of lower rent?

Yes, and the trade is common. Landlords generally prefer contributing capital over cutting base rent, because rent drives building valuation. Expect to pay for a larger allowance through a longer term, higher base rent, or amortization of the excess at an agreed interest rate. Run both scenarios against your own capital position — if cash at opening is tight, taking the allowance and paying more rent over time is frequently the correct choice.

Sources

• https://www.sba.gov/business-guide/manage-your-business/buy-assets-equipment
• https://www.ada.gov/resources/small-business-primer/
• https://www.irs.gov/publications/p535
• https://www.osha.gov/construction
• https://www.iccsafe.org/
• https://www.energy.gov/eere/buildings/commercial-buildings-integration
• https://www.uschamber.com/co/start
• https://www.score.org/resource/business-planning-financial-statements-template-gallery
• https://www.nfpa.org/codes-and-standards
• https://www.usgbc.org/leed

Related on PULSE

• How do I negotiate a tenant improvement allowance on a commercial lease?
• What does a commercial lease work letter actually cover?
• How much working capital should I hold at opening?
• What is the difference between cold shell, warm shell, and second-generation space?
• How do I budget FF&E separately from construction costs?
• When should I apply for a liquor license relative to my opening date?