What Drives Industrial Property Value in Ontario? The Key Factors an Appraiser Weighs

Why Is Industrial Appraisal Different From Other Property Types?

Industrial buildings are valued primarily as functional assets. Unlike retail, which is valued on traffic and visibility, or office space, which is valued on user experience and building systems, industrial space is valued on what it can do — how much it can move, store, process, or manufacture, and how efficiently it can do it. The fundamental question an appraiser is answering is whether the building can accommodate modern industrial operations, and if so, for which uses and tenants.

This functional lens is critical because it means two industrial buildings of identical size and age can carry very different values. A 50,000-square-foot warehouse built in 1995 with 18-foot clear height, a handful of grade-level doors, and 400-amp electrical service is a materially different asset than a 50,000-square-foot facility with 32-foot clear height, eight dock-level doors, and 1,200-amp three-phase power. The market treats them differently because tenants treat them differently — and where demand differs, price per square foot follows.

When a building cannot accommodate modern industrial operations, it loses value relative to purpose-built competition, even if it is structurally sound. The appraiser's job is to quantify that gap through comparable market evidence and, where appropriate, functional obsolescence deductions in the cost approach.

What Physical Characteristics Drive Industrial Property Value?

Clear Height

Clear ceiling height — measured to the lowest point of the structure above the floor — is the single most commonly cited physical factor in industrial demand conversations in Ontario. The reason is straightforward: clear height determines how a tenant can use the space. Higher ceilings allow taller racking, more pallet positions per square foot of floor area, and compatibility with modern automated storage and retrieval systems.

Market requirements vary by use type. Large-format distribution and logistics facilities — the kind Amazon, third-party logistics providers, and big-box retail supply chains occupy — typically require 36 to 40 feet of clear height as a minimum. Mid-bay facilities servicing general warehousing and light distribution look for 28 to 32 feet. Small-bay units used for trades, service businesses, and light manufacturing can function at 24 to 26 feet, though demand is thinner at the lower end of that range.

Ontario's existing industrial stock skews lower. Much of the pre-2000 inventory that makes up the base of the London-area and Windsor-area industrial market was built at 20 to 24 feet clear, sometimes less. A building with 18-foot clear height is considered functionally inferior for almost all modern distribution uses — it restricts the tenant pool to users who can operate with limited vertical storage. The appraiser will note the actual clear height, compare it to what the current market requires for the likely tenant base, and reflect the differential in how they weight and adjust their comparables.

Loading Configuration

How product enters and exits the building is fundamental to a logistics or distribution tenant's operating model. There are two primary loading types, and each serves different market segments.

Dock-level doors allow direct trailer access at dock height — typically 48 to 52 inches above grade. This is the standard for cross-dock and end-loading configurations in distribution, logistics, food and beverage, and retail supply chain operations. Without dock loading, a building cannot serve the broad swathe of Ontario's industrial tenant demand that is oriented around inbound and outbound trucking.

Grade-level doors provide drive-in access at floor level. They are well-suited for smaller truck access, manufacturing operations that require material to move directly onto the production floor, and trade and service users. Many buildings have a combination of both types, which widens the tenant pool.

The number of doors relative to floor area also matters. A loading ratio of approximately one dock door per 8,000 to 10,000 square feet is standard for modern distribution facilities. A 100,000-square-foot warehouse with only four dock doors is under-serviced for logistics tenants, which restricts throughput and therefore restricts who will pay full market rent for the space. The appraiser will note the loading count and compare it to what the market expects for a facility of that size and probable use.

Trailer parking — the number of trailer stalls available on site — is directly related to loading efficiency. A logistics tenant with multiple inbound and outbound trailer moves per day needs on-site staging area. Limited trailer parking is a functional deficiency that reduces both the depth of demand and the rent a logistics tenant will offer. The appraiser will assess trailer parking as part of the site analysis.

Electrical Service

Modern industrial and manufacturing operations are power-intensive. The electrical service available to an industrial building — measured in amperage, voltage, and phase — affects what kind of tenant can occupy the space and at what level of productivity. The appraiser will note the service specifications and compare them to what the market requires for the building's probable use.

For most general industrial and light manufacturing uses in Ontario, 600 volts and 1,200 amps of three-phase service provides adequate capacity. Heavier manufacturing — automotive component production, food processing at scale, or high-density cold storage — may require significantly more. Buildings with inadequate power face functional obsolescence: the tenant who needs more service will not pay market rent unless they can upgrade, and that cost may not be feasible or may be prohibitively expensive relative to the lease term.

Upgrading electrical service is not trivial. It requires coordination with the local utility, panel and transformer upgrades, and potentially site work if infrastructure capacity is limited. In some parts of Ontario, grid capacity constraints mean that meaningful service upgrades are difficult to secure regardless of cost. Buildings that already carry high-capacity service are increasingly valued for that reason.

Ontario's industrial demand for EV supply chain manufacturing, data centre support, and large-scale food processing has made power capacity an increasingly prominent factor in industrial valuations. Where a building carries more service than its current tenant requires, that excess capacity may represent a value premium — particularly in markets where utility upgrades are constrained.

Column Spacing and Bay Configuration

The structural column grid defines how the interior space can be used. Columns interrupt racking rows, restrict fork truck travel paths, and limit the flexibility with which a tenant can lay out a production or storage floor. The wider the bay — the distance between column lines — the more flexibility the building offers and the broader the range of uses it can accommodate.

Modern industrial construction targets bay sizes of 50 by 50 feet or 50 by 60 feet, which provide the open floor spans that high-throughput racking systems, wide fork truck aisles, and automated logistics equipment require. Older buildings — particularly those built before 1990 — may have column spacing of 20 by 20 feet or 25 by 30 feet. At those intervals, the column grid creates meaningful operational inefficiencies: narrower racking bays, more interruptions to material flow, and constraints on automation that require clear floor runs.

The appraiser compares the subject's bay configuration to what the current market requires for the likely tenant base. For most distribution and warehousing uses, older column grids represent a functional deficiency — not a fatal one, but one that limits the pool of tenants willing to pay the top of the market range.

Office Component

Industrial buildings typically include some office space — for administrative functions, dispatch, quality control, or site management. The proportion of the building that is office space, expressed as a percentage of total floor area, affects the market pool in both directions.

Most industrial tenants prefer an office ratio of 5% to 15% for general industrial use. That range provides enough space for operational management without consuming excessive floor area that would otherwise be productive warehouse or production space. Higher office ratios — 30% or more of total area — in an industrial building can be a negative. They reduce the effective warehouse floor, add HVAC and finishing costs per square foot, and impose a conversion cost on any future tenant who does not need that level of office build-out. The appraiser notes the office ratio, assesses its alignment with market norms, and may apply an adjustment for excess or deficient office space where comparable evidence supports it.

What Location Factors Do Appraisers Consider?

Highway and Freeway Access

For most industrial uses — particularly distribution, logistics, and manufacturing with frequent inbound and outbound freight — highway proximity is the dominant location factor. Quick access to a major freight corridor reduces transportation time and cost, which translates directly into operating efficiency for the tenant and therefore into rent-paying capacity.

In Ontario, the relevant corridors include Highway 401 (the backbone of Southwestern Ontario freight), Highway 402 (connecting London to Sarnia and the U.S. border at Port Huron), Highway 403, and Highway 6. London's position at the intersection of the 401 and 402 is a direct competitive advantage for manufacturers and logistics operators serving Southwestern Ontario — it provides east-west access to Toronto and Windsor and northwest access to Sarnia without backtracking. The appraiser will note the time-distance to the nearest 400-series highway interchange as part of the location analysis, and will reflect this in adjustments where location quality differs between the subject and its comparables.

Proximity to Labour Markets

Industrial operations require people — skilled trades, fork truck operators, production workers, logistics coordinators. Proximity to residential areas, public transit routes, and workforce concentration affects a tenant's ability to recruit and retain employees, and it has become a more prominent location consideration in Southwestern Ontario as the industrial labour market has tightened.

The appraiser considers labour access as part of the location analysis, particularly for large-footprint industrial facilities where headcount is meaningful. A distribution centre employing 300 people is more sensitive to transit access and residential proximity than a 10,000-square-foot manufacturing cell with a small specialized workforce. Where the subject's labour access position differs materially from comparables, an adjustment may be warranted.

Rail Access

Direct rail siding — a connection from the building to an active rail line — is rare and valuable for specific industrial uses: resource extraction, bulk commodity handling, automotive component manufacturing, and agricultural processing, among others. For most suburban and light industrial properties in the London and Windsor markets, rail access is not relevant to value. But where it exists and the subject use can take advantage of it, rail access is a significant premium-driver that the appraiser must account for in the sales comparison analysis.

Airport Proximity

Air freight-dependent tenants — certain specialty manufacturers, pharmaceutical distributors, and e-commerce operations with time-sensitive fulfillment requirements — may weigh proximity to London International Airport or Pearson International Airport in their site selection. This is generally a secondary consideration in Ontario's industrial market, but for specific assignments where the highest-and-best-use analysis points to air-freight-dependent users, airport proximity becomes relevant to the location analysis.

What Market Conditions Affect Ontario Industrial Property Value?

The value an appraiser assigns to any industrial property is anchored in what the market is currently paying — through lease rates and sale prices — for similar assets. Market conditions in Ontario's industrial sector have been dynamic, and understanding the current context is essential to interpreting how the appraiser weighs the evidence.

Southwestern Ontario industrial vacancy has remained tight by historical standards through the mid-2020s, driven in part by large-format logistics demand that accelerated through the pandemic period and has since moderated but has not reversed. The region's proximity to U.S. markets via the 401–402 corridor and its established manufacturing base have kept demand for functional industrial space above historical norms.

The EV supply chain investment cycle — anchored by Stellantis NextStar Energy in Windsor and LG Energy Solution in Windsor-Essex — has generated substantial demand for large-format industrial space and specialized manufacturing facilities in that market. That demand has spilled into the broader Southwestern Ontario region, with suppliers and logistics providers seeking space in London and along the 401 corridor to support Windsor-area production. For appraisers working in those markets, this context shapes how they interpret vacancy, absorption, and comparable lease evidence.

The London-area industrial market presents a mix of older stock — much of it pre-2000 and carrying the functional limitations described above — and newer suburban product in the city's east and north industrial parks. New supply has been limited relative to demand for modern large-format space, which has kept lease rates on newer product firm. The appraiser will establish market rent through comparable lease analysis based on actual arm's-length transactions, not based on what the owner believes the space should be worth or what was achieved in a prior cycle.

For sale comparables, the appraiser uses recent arm's-length sales of functionally similar industrial properties to calibrate value. In submarkets where sale volume is thin — as it can be in smaller Ontario markets or for specialized property types — the appraiser must be transparent about the weight they can place on available evidence and may rely more heavily on the income approach or cost approach where the sales comparison approach is limited by data constraints.

What Is Functional Obsolescence in an Industrial Building?

Functional obsolescence is one of the most important value-affecting concepts in industrial appraisal, and one of the most commonly misunderstood. It occurs when a building can no longer adequately accommodate modern operational requirements — not because of physical deterioration, but because the market has moved beyond what the building was designed to do.

The distinction from physical deterioration is important. A building with a leaking roof has physical deterioration — a condition problem. A building with 18-foot clear height in a market where the minimum functional requirement is 28 feet has functional obsolescence — a design problem that no amount of maintenance will correct. Both reduce value, but they require different analytical treatment.

Common examples of functional obsolescence in Ontario industrial buildings include: clear height below current market minimums for the subject's size and probable use; inadequate electrical service for the tenant profile the building can attract; obsolete column spacing that restricts racking and automation; insufficient dock loading relative to floor area; and inadequate trailer parking for logistics operations.

The appraiser distinguishes between curable and incurable functional obsolescence. If a deficiency is economically feasible to correct — for example, upgrading electrical service where the utility can provide the additional capacity — the cost to cure becomes the measure of the obsolescence. If the correction costs more than the value it adds, or if it is physically not feasible, the obsolescence is incurable and the value deduction reflects the market evidence for the premium that functional properties command over functionally obsolete ones.

In the cost approach, functional obsolescence is quantified as a deduction from the replacement cost of the improvements. In the sales comparison approach, the appraiser applies market evidence — comparables of similar functional profile — to calibrate the value differential without an explicit obsolescence calculation. Both methods should converge on a consistent treatment of the functional shortfall.

How Do Appraisers Approach Industrial Property Valuation?

AACI appraisers in Ontario apply three recognized approaches to value and reconcile them to a final opinion. The weight given to each approach depends on the data available, the type of property, and the intended use of the report.

The Sales Comparison Approach compares the subject to recent arm's-length sales of similar industrial properties in the market area. Adjustments are made for differences in size, age, clear height, loading configuration, electrical service, location, and physical condition. This approach is most reliable when there is an adequate volume of comparable sales with confirmed terms, making it the primary indicator for owner-occupied and single-tenant industrial buildings with good comparable availability.

The Income Approach is applied to income-producing industrial properties. The appraiser estimates what a typical tenant would pay in market rent for the subject property — based on comparable lease transactions, not the subject's actual rent if that rent is above or below market. From the market rent, the appraiser deducts a vacancy and credit loss allowance and estimated operating expenses to arrive at net operating income, which is then capitalized at a rate reflecting the market's risk-return expectations for that property type. For investment-grade industrial properties being valued for financing or sale, the income approach typically carries the most weight.

The Cost Approach estimates the value of the land plus the depreciated replacement cost of the improvements. Depreciation includes physical deterioration, functional obsolescence, and external obsolescence. The cost approach is particularly useful for newer or specialized buildings where comparable sales are limited. It is also used as a check on the other approaches, since a well-developed cost approach provides a ceiling on value under normal conditions — buyers will not pay more for an existing building than what it would cost to build a comparable one new.

After developing all applicable approaches, the appraiser reconciles the indications to a final value opinion, considering the quality and quantity of evidence supporting each approach and the nature of the assignment.

What Should Industrial Property Owners Know Before Ordering an Appraisal?

1. Know your building specs. The appraiser will ask for clear height, loading door count, electrical service specifications, site area, gross building area, and year built. Having these figures ready — particularly the electrical service amperage and voltage — avoids delays and ensures accuracy.
2. Provide your lease documentation if the building is tenanted. For income-producing properties, the appraiser needs the current lease, including rent, term, renewal options, and tenant responsibilities for operating costs. Operating statements for the last two to three years are also useful.
3. Disclose any known environmental, structural, or mechanical issues. Environmental contamination, foundation concerns, roof condition, and mechanical system status must be addressed in the scope of work assumptions. Undisclosed issues that surface after a report is completed can require amendments or reassignments.
4. Understand that the appraiser's value opinion reflects the market. The appraiser's number is anchored to what comparable properties have actually sold or leased for, not to the owner's asking price, the purchase cost, or the replacement cost of improvements alone. If the market evidence does not support the owner's expectations, the appraiser's obligation is to report what the market evidence indicates.
5. Confirm report type with your lender before ordering. For financing purposes, confirm with your lender or broker whether they require a full narrative appraisal report or whether a short-form report meets their requirements. Most institutional lenders require a full narrative for commercial and industrial properties above a certain value threshold.

FAQs

Does clear height have that big an impact on value?

Yes. In the current Ontario industrial market, a building with 28 or more feet of clear height rents and sells at a meaningful premium over 20-foot clear product. The difference can be 15 to 30 percent in lease rate and sale price per square foot, depending on the market and property size. The gap is widest in larger-format buildings where the tenant base is most sensitive to racking capacity and logistics throughput. For smaller-bay properties where the tenant pool is primarily trades and light manufacturing, the spread is narrower but still present.

How is industrial property valued if it is owner-occupied with no tenants?

The appraiser uses the sales comparison approach as the primary method and may apply the income approach using market rent — the rent a typical tenant would pay, rather than actual rent. The cost approach may also be applied, particularly for newer buildings or specialized improvements where comparable sales are limited. Owner-occupied industrial buildings are valued as if vacant and available for lease to a typical market tenant, which is how lenders and the market price them when they change hands.

Does contamination always affect value?

If contamination is known or suspected and no remediation has occurred, the appraiser will note it in their scope of work assumptions and will typically value the property as if the environmental condition does not exist — flagging that value may be affected and that a Phase I or Phase II Environmental Site Assessment should be obtained. If a Phase II ESA and remediation report are available confirming clean status, the appraiser can work from that basis. Unresolved contamination typically depresses value and marketability, and most institutional lenders will not advance on a contaminated property until remediation is confirmed.

Does the age of an industrial building matter?

Effective age matters more than chronological age. A 1985 building that has been well-maintained, has adequate clear height, and has been mechanically updated may have a lower effective age than a 2005 building that has been neglected. Appraisers assess the physical condition of the improvements, estimate the remaining economic life of the building and its major components, and assign an effective age that reflects actual condition rather than the calendar year of construction. The effective age feeds into the physical depreciation estimate in the cost approach and informs the adjustments applied in the sales comparison approach.