A tenant improvement inspection in San Diego is a visual, non-invasive assessment of a leased commercial space tied to its build-out: a baseline before you sign or take possession, and a verification after the contractor finishes. It documents existing condition, flags defects, and clarifies what the landlord versus the tenant is responsible for maintaining.
What a tenant improvement inspection actually covers
Tenant improvements (TIs) are the alterations a tenant makes to fit a leased space to their use: new partition walls, ceilings, lighting, HVAC distribution, restrooms, electrical circuits, flooring, storefront, and finishes. A TI inspection is not the construction itself. It is an independent record of condition at two key moments, so that when something fails or a dispute arises, there is documentation instead of memory.
At The Real Estate Inspection Company, this is a visual inspection of accessible, installed systems and components. We observe and photograph; we do not open finished walls, perform engineering calculations, or certify code compliance. For a leased suite, that typically means documenting the condition of the structure, roof access points, the HVAC unit(s) serving the suite, the electrical panel and visible circuits, plumbing fixtures and supply/waste where visible, lighting, ceiling grid, flooring, and the storefront or entry. Pricing depends on square footage, age and access, so see our fee schedule for how we scope a commercial walk-through.
Baseline (pre-TI) inspection: protect yourself before the work starts
The single most valuable inspection happens before any demolition. A baseline establishes the condition of the space on the day you accept it. In San Diego’s commercial corridors, that matters more than people expect. A 1970s retail box in El Cajon, a converted warehouse in Barrio Logan, and a coastal office in Carlsbad each carry different baggage: aging single-ply roofs, undersized electrical service, dated rooftop package units near the end of their life, and slab moisture in older tilt-up buildings.
A pre-TI baseline gives you leverage on several fronts:
- Lease negotiation. If the existing HVAC is at the end of its service life or the panel can’t support your intended load, that is a point to raise before signing, not after you’ve spent on build-out.
- Restoration clauses. Many San Diego leases require the tenant to “return the premises in the condition received, ordinary wear excepted.” Without a documented baseline, “received” is whatever the landlord remembers at move-out. Photos and notes end that argument.
- TI allowance scope. When a landlord offers a TI allowance, knowing the true starting condition helps you and your contractor budget realistically instead of discovering surprises mid-project.
If the building is older or you’re taking the whole property, a baseline often pairs naturally with a broader commercial property condition assessment, which looks at the building envelope, structure, and major systems beyond your individual suite.
Post-TI inspection: verify the build-out before you accept it
Once the contractor finishes, a post-TI inspection confirms what was actually delivered against the scope and that installed systems are operating. We’re not the city inspector and we don’t sign off on permits, but we provide an independent set of eyes that catches the everyday issues a busy tenant misses on a final walk: HVAC zones that don’t reach the back of the suite, exhaust fans that aren’t ducted to the exterior, outlets that test as open-ground or reverse-polarity, missing GFCI protection at wet locations, plumbing leaks under new fixtures, doors that don’t latch, and ceiling tiles left out around new mechanical work.
For a post-TI walk, ask the contractor to leave the suite reasonably clean with utilities energized and water on. We can run thermal imaging to spot moisture intrusion, missing insulation behind new walls, or overheating electrical connections that aren’t visible to the naked eye. None of that replaces the city’s permit inspections; it supplements them with a condition record you control.
Landlord vs. tenant: who maintains what
This is where most commercial disputes start, and a TI inspection helps draw the line clearly. The lease type drives the answer. Under a gross or modified-gross lease, the landlord typically retains more responsibility for structure, roof, and base-building systems. Under a triple-net (NNN) arrangement common in San Diego retail and industrial, the tenant often shoulders far more, sometimes including the rooftop HVAC unit serving their suite.
Generally, the division falls along these lines, but always read your specific lease:
- Usually landlord: roof and structure, exterior walls and foundation, common-area systems, primary building service entrance, and the parking lot.
- Usually tenant: interior finishes, the TIs themselves, suite-level plumbing fixtures, suite lighting, and frequently the HVAC unit(s) dedicated to the leased space.
- Gray zone: rooftop package units, water heaters, and the point where base-building electrical hands off to tenant circuits. These are exactly the items a baseline inspection should document so each side knows the starting condition.
Because the financial exposure under NNN can be significant, many tenants pair a TI baseline with full lease-condition documentation. Our guide to triple-net lease due diligence in San Diego walks through what to verify before you accept HVAC and structural maintenance obligations you may not have priced in.
Permits and scope: what to confirm
In the City of San Diego and the county’s incorporated cities, most TI work requiring structural, electrical, mechanical, or plumbing changes needs a permit through the local building department. A change of occupancy classification can also trigger accessibility upgrades. As your inspector, we observe and document conditions; we do not pull permits, perform plan check, or provide code or CASp/ADA-compliance certification. Those are determinations for the city, your design professional, a licensed CASp specialist, and your contractor.
That said, a few practical scope questions are worth confirming before and after a TI:
- Is the work being permitted, and does the permitted scope match what was built? Unpermitted TIs can become the next tenant’s, or buyer’s, problem.
- Did an occupancy or use change occur that may require accessibility, exiting, or fire-life-safety upgrades? Confirm with the building department.
- Were structural alterations made? Anything touching load paths, roof framing, or shear walls is the domain of a licensed structural engineer, not a home inspector.
- Does the as-built condition match the lease’s TI exhibit and the contractor’s scope of work?
How to use a TI inspection in your deal
Sequence it deliberately. Order the baseline as soon as you have access and before demolition. Order the post-TI walk after the contractor calls the job complete but before you sign the acceptance certificate or start paying full rent. Bring both reports to your broker and, for anything involving lease obligations or unpermitted work, your real estate attorney. We provide observations and documentation, not legal advice.
The Real Estate Inspection Company is led by Joseph Romeo, an InterNACHI Certified Professional Inspector and CSLB-licensed General Contractor (#1113143) based in San Marcos and serving all of San Diego County. To scope a baseline or post-build-out walk for your leased space, learn more about our commercial building inspections or contact us at (619) 752-4399.
