What the survey produces
Two things. An inspection report for each asset, which is what a property manager or a contractor works from, and a register covering the whole portfolio, which is what asset management and the capital plan work from. Both come out of the same field work and use the same photograph record, so a row in the register can always be traced back to the building it describes.
The register is the point of the exercise. Individual roof reports already exist across most portfolios, written by different firms in different formats at different times, and they cannot be compared. Putting every roof through one protocol produces something that can be: a ranking, a concentration of expenditure and a sequence.
What it does not settle
It does not price the work. Scope and quantities are stated so that the register can be priced, and unit rates belong to contractors bidding in a market that moves.
It does not resolve what is under the membrane on every building. A walk establishes condition and detail failures. Layer count, deck condition and the extent of wet insulation require the roof to be opened or scanned, and across a portfolio that is normally applied to a subset chosen from the first pass rather than to everything.
It does not decide the sequence. The register shows where the condition and the money are. Hold periods, disposal plans and capital availability sit with the owner, and a survey that pretends otherwise is overreaching.
When a portfolio survey is commissioned
Usually when the existing record has stopped being usable. Buildings acquired at different times carry reports from different consultants in different formats, and nobody can say which roof is worst. A new owner or a new asset manager inherits a portfolio and needs a baseline. A capital plan is being built and the roof line is being estimated from installation dates. A lender or an investor has asked what condition the assets are in.
It is also commissioned on a cycle, where the point is direction rather than a baseline. The second round says which roofs held and which moved, and that is information a budget cannot get from age.
Common questions
How is one rating scale kept consistent across many buildings and inspectors?
By writing the scale down before field work begins and by controlling how it is applied. A scale is comparable only if every inspector means the same thing by each point on it, and instruction alone does not achieve that.
- Written definitions with examples, and what evidence moves a section up or down
- A fixed photograph standard, so every roof produces the same set of views
- Ratings checked later against images rather than against memory
- One person reviews ratings across assets before the register is issued, and looks at outliers again
The register is used comparatively, so a portfolio where one inspector was consistently harsher produces a ranking that reflects the inspectors rather than the roofs. Where a building genuinely does not fit the scale, it is recorded in the narrative and flagged rather than forced into a category that misrepresents it.
What does the register hold for each building?
One row per roof section rather than one per building, because a property with roofs of different ages has more than one answer and an average is wrong for all of them.
- Asset, section identifier as marked on the plan, roof system and approximate age
- Area, condition rating, current scope of work and the quantity behind it
- The year bracket the work falls in
- A basis field: whether age and layer count came from documents, a core or inference
- An open questions field, recording what could not be reached or tested
The basis field tells a reader which numbers rest on evidence and which rest on judgment. Rows should be updated when work is done, when a roof is replaced and when a building leaves the portfolio, and the report should say who owns that. A register nobody updates becomes a snapshot within a year.
How are buildings ranked once the survey is complete?
By consequence rather than by condition alone. The lowest rated roof is not automatically the first one to spend money on.
- A poor roof over a vacant warehouse near disposal is a different priority
- A fair roof over occupied space with sensitive contents can outrank it
- What is letting water in, and what is cheap now and expensive later
- Where the asset sits in the hold period, and what is underneath the roof
Wet insulation is cheap now and expensive later, and it is the item most often deferred into a much larger cost. The register supports the judgment by keeping condition data separate from the decision. We recommend a sequence, but the decision belongs to the owner, because hold periods, disposal plans and capital availability sit outside anything an inspection can see.
Can a survey be phased across a year rather than done at once?
Yes, and for larger portfolios phasing is normally the practical choice. Access alone makes a single sweep difficult, and waves grouped by geography cost less and schedule more easily.
- Tenant notice, escorts, lifts and site contacts are arranged building by building
- Every row carries its inspection date, and the portfolio view states the range
- A rating from early in the year and one from late are not the same currency
- The protocol has to hold across the whole period, including the photograph standard
Changing a rating definition partway through breaks the comparison the register exists to support, particularly either side of a storm season. Agree the order before starting. Assets with known problems, imminent capital decisions or an approaching disposal usually belong in the first wave.
What happens to the register when a roof is repaired or replaced?
It is updated, and the updating decides whether the survey keeps its value or becomes a historical document. A register is an asset record, not a report.
- On replacement the row changes: new system, new date, new rating, scope cleared
- The warranty and specification are filed against the asset
- On repair the scope line is closed with the invoice and completed work photographs
- The next inspection then checks the work rather than rediscovering the fault
Decide at the start who owns that maintenance. In most portfolios it sits with asset management or the property managers who commission the work, and it fails when it sits nowhere. Where a survey repeats on a cycle, each round starts from the existing rows and records what changed, which over several rounds produces direction.