Strata Depreciation Reports — The Role of Leak Surveys

Since December 2013, BC strata corporations have been required to obtain a depreciation report (also known as a reserve fund study) every three years, unless the owners vote to waive this requirement. A depreciation report documents the physical condition of the building's major components — including the roof, building envelope, plumbing, electrical, and mechanical systems — and forecasts when these components will need repair or replacement. The accuracy of this report depends heavily on the quality of the underlying physical inspection data.

Leak surveys and moisture assessments play a critical but often overlooked role in creating accurate depreciation reports. Many depreciation reports rely primarily on visual inspections and age-based assumptions about component lifespans. But for water-related building systems — roofing, building envelope, waterproofing, and plumbing — visual inspections alone are insufficient. Moisture can be present for years before it becomes visible, meaning a component that appears sound may be nearing failure. This is where specialized leak detection and moisture survey data adds essential value to the depreciation report process.

For roof systems, an infrared roof scan conducted by a certified thermographer reveals the true condition of the roof assembly. Wet insulation beneath the membrane — invisible from the surface — dramatically reduces thermal performance and accelerates membrane deterioration. The extent of wet insulation detected by infrared scanning directly impacts the remaining service life estimate and the reserve fund allocation for roof replacement. Without this data, depreciation reports may underestimate the urgency of roof renewal.

Building envelope assessments for depreciation reports should include thermal imaging of exterior walls to detect insulation gaps, missing or damaged air barriers, and moisture within wall assemblies. For buildings from the leaky condo era (1980-2000), this is particularly important. A building envelope that appears sound from the exterior may have advanced moisture damage hidden behind cladding. Drone-mounted thermal cameras can survey multi-storey buildings quickly, providing data that would be prohibitively expensive to gather through scaffolding or swing stage access.

Plumbing system condition is another area where leak surveys inform depreciation planning. The age and material of plumbing risers, branch lines, and shut-off valves determine their expected remaining life. But actual condition may vary significantly from age-based estimates due to water quality, installation quality, and maintenance history. Pressure testing of representative plumbing circuits, coupled with video inspection of common drain and sewer lines, provides objective condition data that supports more accurate reserve fund projections.

A comprehensive leak survey for depreciation report purposes typically includes: infrared roof scan to document membrane and insulation condition, thermal imaging spot checks of the building envelope on multiple elevations, moisture meter baseline readings in common area basement and parkade walls, video pipe inspection of main drain and sewer lines if accessible, and pressure testing of representative domestic water risers. The resulting data is compiled into a condition report that plugs directly into the depreciation report's component inventory and condition assessment.

Investing in professional leak surveys as part of the depreciation report process is cost-effective. A typical building-wide moisture assessment costs a fraction of the total depreciation report fee but provides critical data that can identify emerging issues before they become emergency repairs. For strata councils, having objective moisture data supports defensible reserve fund planning and helps justify special levies when needed. For owners, it provides confidence that the depreciation report accurately reflects the building's true condition and that reserve funds are being allocated appropriately.