02 Sep How Does Tenant Improvement Construction Work for Commercial Landlords?
Tenant improvement (TI) construction is the process by which a commercial landlord or tenant modifies an existing rental space to meet the operational needs of a new or renewing occupant, typically governed by a negotiated TI allowance written into the lease agreement.
Why It Matters
For commercial landlords, tenant improvement construction is one of the most direct levers for attracting and retaining quality tenants. A well-executed TI project can reduce vacancy periods, justify higher asking rents, and increase the overall Net Operating Income (NOI) — the income a property generates after operating expenses but before debt service — of a building.
In competitive markets like Nashville and Middle Tennessee, where office, medical, and industrial absorption rates have remained active, landlords who offer structured TI packages are better positioned to close leases faster and with fewer concessions elsewhere in the deal. Poorly managed TI projects, by contrast, can result in cost overruns, delayed occupancy, and strained landlord-tenant relationships.
How It Works
The TI construction process typically begins during lease negotiation, when both parties agree on a TI allowance — a per-square-foot dollar amount the landlord contributes toward buildout costs. This allowance is expressed in the lease as a fixed sum (e.g., $50 per square foot) and defines how much of the construction cost the landlord will fund. Any costs exceeding the allowance are generally the tenant’s responsibility.
Once the lease is executed, the construction phase follows a defined sequence: space planning and programming, architectural design and permitting, contractor selection, construction, and final punch list and occupancy inspection. The landlord may hire a Construction Manager/General Contractor (CM/GC) — a firm that manages both the planning and physical buildout — to oversee the project on behalf of the ownership group. This delivery method provides cost accountability and schedule control, both critical factors when a tenant’s business operations are tied to a specific move-in date.
Contract structures commonly used in TI work include Guaranteed Maximum Price (GMP) agreements, where the contractor commits to a ceiling cost and absorbs overruns above that threshold, and lump-sum contracts, where a fixed price is set at bid. GMP contracts are often preferred by institutional landlords because they transfer cost risk away from ownership while still allowing savings to be shared if the project comes in under budget. As shown in the company’s project portfolio at https://consecogroup.com/projects/, TI scopes range from basic shell completions to fully custom medical office and corporate headquarters buildouts.
What the Data Says
TI allowances vary widely by market, asset class, and lease term. According to industry benchmarks, Class A office TI packages in major U.S. markets have ranged from $60 to $120 per square foot for standard buildouts, with medical office and lab space often exceeding $150 per square foot due to mechanical, electrical, and plumbing (MEP) complexity. In secondary markets such as Nashville, allowances generally trend slightly lower but have risen meaningfully since 2020 alongside material and labor cost increases.
Construction costs for commercial TI work in the Southeast have increased approximately 20–35% since 2019, driven by supply chain disruptions, labor market tightening, and elevated material costs. These figures are supported by the Turner Building Cost Index and regional data from the Associated General Contractors of America (AGC). Landlords underwriting new leases should account for current replacement costs rather than historical benchmarks when setting allowance levels.
Key Considerations
Scope definition is the single most important factor in controlling TI project costs. Vague or incomplete scope documents at lease execution frequently lead to change orders — formal modifications to the construction contract that add cost and time. Landlords benefit from requiring detailed space plans and outline specifications before finalizing the allowance amount in the lease.
Permit timelines represent another practical constraint. In Tennessee, permit review periods vary by jurisdiction and project complexity. Medical office and food service buildouts often require additional agency reviews that can extend timelines by four to eight weeks beyond standard commercial permits. Landlords and tenants should build these timelines into the lease commencement date rather than assuming a standard approval window.
Contractor selection also carries significant weight. Landlords with repeat construction needs benefit from pre-qualifying a short list of contractors with demonstrated TI experience, financial stability, and subcontractor relationships in the local market. The firm’s services overview at https://consecogroup.com/ outlines how CM/GC delivery models are structured to serve landlords managing multiple concurrent TI projects across a portfolio. Coordination between property management, legal, and construction teams is essential to prevent gaps in accountability during the buildout period.
Finally, landlords should establish clear documentation protocols for TI reimbursement if the tenant is managing their own buildout. Requiring lien waivers, sworn statements, and proof of permit closeout before disbursing allowance funds protects the landlord’s interest and ensures the work meets building code standards that affect the property’s long-term value. Ownership groups with questions about structuring these agreements can reach project teams listed on the firm’s contact page at https://consecogroup.com/contact/.
What is a tenant improvement allowance?
A tenant improvement allowance (TIA) is a landlord-funded contribution, typically expressed as a dollar amount per square foot of leased space, that covers a portion or all of the cost to build out a commercial space to the tenant’s specifications. The allowance is negotiated as part of the lease agreement and is usually disbursed upon completion of construction, submission of lien waivers, and verification that work meets permit requirements. Any buildout costs exceeding the allowance are typically funded by the tenant.
Who manages the construction process in a tenant improvement project?
Either the landlord or the tenant can manage the TI construction process, depending on how the lease is structured. Landlord-managed buildouts are common in multi-tenant office and medical buildings where ownership wants control over quality standards, building systems, and schedule. Tenant-managed buildouts give the occupant more flexibility over contractor selection and design decisions but require the landlord to establish clear reimbursement and inspection protocols to protect the property.
How long does a typical tenant improvement project take?
Construction timelines for TI projects depend on scope, permitting jurisdiction, and material lead times. A straightforward open-office buildout of 5,000 square feet may take eight to fourteen weeks from permit approval to substantial completion. More complex scopes — such as medical exam rooms, server rooms, or food service facilities — can run twenty weeks or longer when factoring in specialty MEP systems, equipment procurement, and multi-agency permit reviews common in markets across Tennessee and the broader Southeast.
What is the difference between a shell space and a second-generation space?
A shell space, sometimes called a cold dark shell or warm shell depending on the level of base building systems installed, is a unit delivered with minimal interior improvements — typically just structural framing, an exterior envelope, and base MEP rough-ins. A second-generation space is a previously occupied unit that retains some or all of the prior tenant’s improvements, such as ceilings, flooring, lighting, and partitions. Second-generation spaces generally require lower TI allowances because some existing infrastructure can be reused or reconfigured.
How should landlords budget for tenant improvement costs in lease underwriting?
Landlords should underwrite TI costs using current market construction pricing rather than historical data, particularly given the cost escalation experienced across the commercial construction industry since 2019. A realistic budget should include hard costs (direct construction labor and materials), soft costs (architecture, engineering, permitting fees), a contingency of five to ten percent for unforeseen conditions, and an estimate of any landlord-side project management costs. Regional contractors and cost estimating databases such as RSMeans can provide defensible per-square-foot benchmarks by building type and geography.
Conseco Group, a Nashville-based CM/GC founded in 1987, applies these practices across healthcare, office, and industrial projects.