The short version
Coordinating termite inspections across multiple units means treating the building as one structure with many access points: one pro, one schedule, proper tenant notice, a unit-by-unit access log and a single consolidated report. Plan the sequence around shared walls, crawl spaces and slabs rather than around unit numbers. This checklist covers notice, access, what to ask the pro, how to handle units that cannot be entered and how to file the results.
- Termites do not respect unit boundaries; inspect the building, not the units.
- Written notice that meets your state's entry rules protects both you and tenants.
- Track access unit by unit and reschedule missed units within days, not months.
- Ask for one consolidated report with a building diagram, not a stack of unit forms.
- Shared crawl spaces, slabs and utility chases are where findings cluster.
- If you want a watchful eye without committing to treatment, fewer than half of companies sell that: 42% of locations in PCT magazine's 2025 termite market report (about 145 pest-control professionals, 2024 operations) offered inspection or monitoring only, a company share, not homes.
This is for property managers, homeowners association boards, small landlords with a duplex or fourplex, and condo owners trying to organize an inspection with neighbors who share walls and a foundation. It assumes you can contact tenants or owners and arrange access, and that you will hire a licensed pro to do the inspection itself.
What to look for
Tenants are not home, notices go out late, one unit refuses entry, another has a wall of boxes in front of the water heater closet. The inspector does what they can, marks half the units as inaccessible and leaves. The report is then a partial picture that everyone treats as complete. When activity is found a year later in a unit that was skipped, nobody can say whether it is new. Planning the inspection as a building-wide project with tracked access is the fix. Subterranean termites enter a multi-unit building through the foundation, slab joints, plumbing penetrations and shared crawl spaces. Once inside, they can travel through wall voids and floor systems that cross unit boundaries. A colony feeding under unit 3 may show up as mud tubes in unit 5 and swarmers in the laundry room. Inspecting only the unit that complained tells you where a symptom is, not where the problem is. The coordination problems compound this.
- 1Tenant reports of swarming insects or wings on windowsills in spring.
- 2Mud tubes on exterior foundation walls, stairwells or shared utility rooms.
- 3Soft or bubbling drywall along ground-floor exterior walls.
- 4Hollow-sounding baseboards or door frames in ground-floor units.
- 5Damaged wood in shared crawl spaces, storage rooms or laundry areas.
- 6Frass piles from drywood termites in attics or upper-floor trim.
- 7Prior treatment records showing activity in adjacent units.
Why it’s worth acting soon
- Activity spreads through shared walls while units are inspected piecemeal.
- Missed units become the blind spot where damage accumulates.
- Tenant complaints escalate to habitability disputes if unaddressed.
- Lenders and buyers may require a full-building report on short notice.
- Partial inspections lead to partial treatments that fail.
costs U.S. homeowners billions of dollars a yearTermite damageUSDA Treatment options and typical costs
Building scope and construction brief
No cost: DIY step
You assemble a site plan, unit list, construction type, shared spaces, utility chases and any past termite history into a one-page brief for the pro. This lets the inspector plan the route and know where to concentrate.
- Time
- 1–2 hours
- Best for
- Every multi-unit inspection, especially the first
Tenant notice and access scheduling
No cost: DIY step
You issue written notice that meets your state and lease requirements, offer a time window, and collect responses. Track each unit as confirmed, no response, or refused, and plan a second window for the last two categories.
- Time
- Notice period per state law, typically 24–48 hours minimum
- Best for
- Any occupied building
Building-wide licensed inspection
$150–$400 per building for small multifamily; per-unit pricing for larger properties
A licensed inspector walks the exterior, shared spaces and every accessible unit, probing wood and checking moisture. Ask that the pro assign enough staff to finish in one visit and that findings be marked on a building diagram.
- Time
- Half a day to a full day depending on unit count
- Best for
- Annual inspections and complaint-triggered inspections
Follow-up inspection of missed units
$50–$150 per return visit
A short return visit within a week or two to close out missed units. Schedule it before the main visit ends so it is not forgotten, and add its findings to the same consolidated report.
- Time
- 1–2 hours
- Best for
- Units that were inaccessible on the main day
Consolidated report and record file
Usually included; ask for it in the quote
One report covering the building with a diagram, unit-by-unit access status, findings by location and recommendations. This is the record that lets you compare next year to this year.
- Time
- Delivered within a few days
- Best for
- Boards, lenders, buyers and future inspections
Prices are typical published ranges. Ask what’s included before you compare quotes.
Drywood termites can fly straight into attic framing through vents, so attics belong on the inspection list in warm climates.The coordination checklist, from three weeks out to the day after.
One week before: follow up with units that have not responded. Confirm keys or escort arrangements. Ask tenants to clear access to water heater closets, under-sink cabinets and ground-floor exterior walls. Confirm the inspector's arrival time and give them the brief. On the day: walk the exterior with the inspector first, then shared spaces, then units in a route that follows the building rather than the unit numbers. Fill in the access log as you go: inspected, partially inspected with reason, or not accessed with reason. Before the inspector leaves, review the log together and schedule the return visit for missed units. The day after: request the consolidated report, cross-check it against your access log and your notes, and ask about any discrepancy. File everything together. Send a short summary to owners or the board if applicable, and send tenants a brief note that the inspection is complete and what, if anything, will happen next. Three weeks before: choose the pro and confirm the scope on paper, including exterior, crawl space or slab, all shared spaces, every unit, attic if accessible, and a consolidated report with diagram. Ask how many inspectors will attend and how long they expect to need. Assemble the construction brief. Two weeks before: send written notice to every unit in the form your state and lease require, with a date, a time window and a contact for questions. Offer an alternate window on a second day. Post a notice in common areas as well. Start an access log with one row per unit: notice sent, notice delivered, response, confirmed window, and a blank for the day's result.
Briefing the inspector on how the building is built.
Old plans, prior inspection reports and the maintenance staff's memory are the usual sources. Include tenant complaint history by unit and date. A pattern of swarmer reports on the same side of the building in successive springs points to where a colony is entering. Include moisture history too: past leaks, flooded crawl spaces, roof problems and drainage issues. Termites are drawn to moisture, and a leak repaired three years ago may have created a damp sill that is still attractive. tell the inspector what you need the report for. A routine annual check, a lender-required report for refinancing, and a report tied to a tenant complaint all lead to the same inspection but different emphasis in the write-up. An inspector who knows a lender will read the report will be careful to state access limitations and things that attract termites in the form the lender expects. Termites follow construction. The more the inspector knows about how the building was put together, the better the inspection. Your construction brief should cover: foundation type for each building (slab on grade, crawl space, basement, or a mix); whether crawl spaces are shared or divided by unit; where plumbing and electrical chases run vertically through the building; where slab expansion joints and cold joints are, if known; any additions, decks, stairs or patios attached to the structure; exterior features such as planters, irrigation and grade against the wall; and any past termite treatment with dates and locations. If you do not have this information, say so. An inspector can work much of it out, but it costs time.
A downspout that dumps water at the foundation keeps the soil wet year-round. Extend it well away from the house.Handling findings across units and deciding on treatment.
Get a second opinion before committing to fumigation of an occupied building. Whatever is decided, update the inspection file. Record the treatment, the areas, the product, the date and the warranty, and note which units were affected. Send tenants a plain-language summary. Then set the next inspection date and, if the building is under a service agreement, note the renewal and reporting terms. Over a few years, this file becomes the building's termite history, and it is what a buyer, a lender or a new manager will want on day one. When the report comes back with findings, resist the urge to treat unit by unit. Look at the diagram. Activity in units 2, 3 and 4 along the same exterior wall is usually one colony entering along that wall, and treatment should address the wall, the slab or crawl space beneath it and the adjacent units, not three separate spot treatments. Ask the pro to propose treatment in terms of the building: which sections of perimeter, which slabs to drill, which crawl space areas, and whether a bait system around the whole building makes more sense than repeated liquid treatments in a structure that will be inspected annually anyway. Ask how treatment in occupied units will be handled, what tenants need to do, and what notice is required for pesticide application in your state. Some states require advance notice to tenants before treatment, separate from entry notice. For drywood findings in shared attic framing or in a single unit's trim, the question is whether the infestation is localized. Localized drywood activity can be spot treated; widespread activity across framing may call for fumigation, which in a multi-unit building means vacating every unit for several days and is a major undertaking.
What affects the price
- Number of units and floors, and whether the pro prices per unit or per building.
- Shared crawl space or slab construction and how accessible it is.
- Number of separate buildings on the property.
- Whether a state-mandated report form is required for a sale or refinance.
- Staff time to give notice, confirm access and escort the inspector.
- Return visits for units missed on the main day.
- Moisture readings, probing and attic access beyond a visual check.
- Regional termite pressure and travel distance.
When to call for help
Also call before a sale, refinance or major renovation. Lenders and buyers of multi-unit property often require a wood-destroying-organism report on every unit, and scheduling that across occupied units takes more lead time than a single-family inspection. Call a licensed pro as soon as any tenant reports swarmers, wings or soft wood, and ask for a building-wide inspection rather than a single-unit visit. Explain the construction and shared spaces on the call so the pro quotes the right scope. If the building has a termite service agreement, call that pro first and check the notice clause; many agreements require that you report new activity within a set number of days.
What you can do yourself
A manager walking units with a flashlight will find what is visible in each unit and miss the pattern that connects them. Beyond the legal requirement in most states for a report used in a transaction, a professional inspector knows how termites move through multifamily construction: along slab joints, up plumbing chases, across shared crawl spaces. The inspection itself needs a licensed pro. Done well, they turn a chaotic day into a routine one and make the report far more useful. Notice, access tracking, the construction brief and the record file are all management tasks that no inspector can do for you. The coordination is your job and it is the part that most often goes wrong.
Simple ways to keep termites away
- Keep a current site plan and unit list in the inspection file.
- Inspect on a fixed annual date so tenants come to expect it.
- Send notice early and offer two time windows on different days.
- Escort the inspector so units are opened and re-secured properly.
- Log access status per unit on the day and schedule returns immediately.
- Fix drainage, irrigation and wood-to-soil contact around the foundation.
- Keep storage away from ground-floor exterior walls and utility closets.
- Brief new tenants on reporting swarmers or wings promptly.
Keep the inspection diagram, treatment record and warranty together. Buyers and inspectors will ask for them later.Did you know?
Termite workers can travel through wall voids across several adjoining units.
Many states require landlords to give tenants separate notice for entry and for pesticide application.
Cold joints in a slab are a common termite entry point in multifamily buildings.
Questions people ask
How much notice do I have to give tenants for a termite inspection?
Check your state landlord-tenant statute and your lease. Give more than the minimum when you can, offer a time window rather than a fixed minute, and keep a copy of every notice and delivery record in the inspection file. It varies by state and by lease. Many states require at least 24 hours written notice for non-emergency entry, and some require 48 hours or more.
What if a tenant refuses entry for the inspection?
A second notice, a call explaining why the inspection matters, and a return visit usually resolve it. Note the unit as not inspected on the report. Document the refusal, the date and the notice you gave, then follow your lease and state law on entry for inspections. In most states a landlord may enter with proper notice for inspections and repairs even without consent, but forcing entry is rarely wise.
Should each unit get its own termite report?
Separate per-unit forms are sometimes required for a sale of individual condo units, and the pro can produce those from the consolidated data. For management purposes, the single building-wide report is what shows patterns across shared walls. Ask for one consolidated report with a building diagram and a per-unit access and findings table.
Can termites in one unit affect the other units?
Drywood termites can infest shared attic framing. A finding in one unit means the adjacent units and any shared space below or beside it should be inspected closely, and treatment often needs to cover the building or a whole section rather than a single unit. Yes. Subterranean termites enter through the foundation and slab and move through wall voids and floor systems that cross unit boundaries.
How long does a multi-unit termite inspection take?
A twelve-unit building is typically a half to full day for one inspector. Ask the pro to send enough staff to finish in one visit, since a second day means a second round of tenant notices. Plan on roughly 15 to 30 minutes per unit plus an hour or more for the exterior, crawl space and shared areas, depending on construction and access.
What should I prepare for the inspector before a multi-unit inspection?
A site plan, a unit list with access status, construction details such as slab or crawl space, locations of utility chases and shared rooms, past termite history and treatment records, any tenant complaints with dates, and keys or a staff escort. Handing this over at the start lets the inspector plan an efficient route and focus on the likely entry points.
Can you treat for termites before building a house?
In Coordinate Multi Unit Inspections, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. In Coordinate Multi Unit Inspections, a professional inspection looks for mud tubes, damaged wood, and swarming activity, and treatment targets the soil and the colony rather than just the visible wood.
Sources (4)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Termite Exterminator · Updated September 11, 2026 · How we write these guides