Seasonal checks across a portfolio

Some building risks are tied to the calendar in a way that others are not. Gutters fill in autumn, pipes freeze in winter, ventilation strains in summer, and the weeks of heavy rain that test a flat roof come round at roughly the same time each year. None of this is a surprise, and yet seasonal failures keep happening, usually because the work that would have prevented them was not scheduled until the season was already underway. Across a single building that is a nuisance. Across a portfolio it is a pattern, and patterns can be planned for.

Why seasonal work slips

Seasonal maintenance has a particular failure mode. It is predictable but not urgent until suddenly it is both. A blocked gutter is a five-minute job in September and a flooded top-floor flat in November, and the cost of doing it changes by an order of magnitude across that gap. Because it is not urgent in September, it competes with reactive work that is, and reactive work tends to win. The job slips, the season turns, and the cheap preventable task becomes an expensive emergency.

Across a portfolio the slippage compounds. A team managing forty buildings cannot rely on remembering that this one has a vulnerable flat roof and that one has external pipework, so the knowledge lives unevenly. Some buildings get their seasonal attention because someone happens to remember; others do not, and those are the ones that fail.

A seasonal cadence worth holding

The fix is to write the seasonal work down as a recurring cadence, the same way the statutory checks are, so that it surfaces before the season rather than during it. The exact tasks vary by building, but the shape is consistent.

The point of the table is not the specific tasks, which any competent team knows, but the timing. Each item belongs to a season, and each should appear on the schedule before that season starts, so the work is done in the calm window rather than the crisis one.

The risks that the calendar makes worse

Two areas deserve particular attention because the season actively raises the stakes.

The first is damp and mould, which is no longer only a maintenance issue but a regulatory one for social landlords. Awaab's Law came into force in its first phase on 27 October 2025, covering damp and mould and all emergency hazards (CIH; Kennedys). It sets defined timescales: investigate a potential damp or mould hazard within 10 working days, provide a written summary within 3 working days of concluding the investigation, and begin to act within 5 working days of finding a significant hazard, with emergency hazards made safe within 24 hours (Housing Ombudsman; RPC). Damp and mould peak in the colder, wetter months, which means the season that produces the hazard is also the season the clock is most likely to start. A landlord who treats condensation as a winter inevitability rather than a hazard to investigate is on the wrong side of that law. Our note on managing damp and mould before it manages you covers the duty in more detail.

The second is the firefighting equipment that taller residential buildings must check monthly. The Fire Safety (England) Regulations 2022, in force 23 January 2023, require responsible persons of high-rise residential buildings to carry out monthly checks of firefighters' lifts and key firefighting equipment (NFCC; gov.uk). That cadence is fixed regardless of season, but winter weather can affect access to roof-level plant and external equipment, so the seasonal schedule and the statutory one have to coexist on the same calendar rather than compete.

Holding it across the whole portfolio

The defining challenge is scale. One building's seasonal needs fit in a head; a portfolio's do not. The buildings that fail seasonally are rarely the ones nobody thought about; they are the ones somebody meant to get to and ran out of time for. The cure is to make the seasonal work visible across every building at once, so the team can see in September what every roof, gutter and heating system needs before November, and can resource it deliberately.

That is the case for a portfolio-wide cadence that chains its own deadlines, where each seasonal task recurs automatically and appears ahead of its season rather than waiting to be remembered. SAMRISK holds recurring work in a compliance calendar that spans every building on the portfolio, so seasonal tasks surface alongside the statutory ones and nothing depends on a single person's memory. For the broader argument, our piece on planned maintenance beats reactive every time makes the economic case.

The weather is the one input you can forecast a year ahead. Build the seasonal checks into the cadence and the seasons stop arriving as surprises and start arriving as scheduled work, which is the whole point.