Cost & commercial
A single kitchen is a quote; a portfolio is a plan. Budgeting across sites means matching frequency to each kitchen's workload, staggering the schedule, and keeping records consistent enough to forecast the year and prove compliance everywhere.
The short answer
Budgeting duct cleaning for one kitchen is a quote; budgeting for a portfolio is a forecasting exercise. The sites will not be identical - a high-volume flagship and a low-use satellite need cleaning at very different intervals - so a single blanket figure either overspends on the quiet kitchens or under-protects the busy ones. The job is to match frequency to each site's real workload, then arrange the whole thing so the annual spend is predictable and the compliance evidence is consistent across every location.
Frequency, site by site
The foundation of a portfolio budget is per-site frequency, and that comes from cooking volume, not from a single house rule. A heavy-use kitchen running long hours needs cleaning far more often than a light-use one; setting them both to the same interval wastes money at one end and leaves risk at the other. A survey of each site establishes its grease load and the interval a risk assessment supports, and that per-site frequency is what you cost up. Multiply each kitchen's interval by its per-visit scope and you have a defensible annual figure for the estate rather than a guess.
This is also where money is quietly saved. Cleaning the quiet sites less often - and the busy ones on time so grease never builds into a big job - keeps every visit at the shorter, cheaper end. A blanket schedule usually does the opposite, over-cleaning some kitchens and letting others drift into expensive catch-up cleans.
Smoothing the spend and the records
Once each site has a frequency, the next move is to stagger visits through the year rather than clustering them, so the cost lands as a smooth, forecastable flow instead of unpredictable spikes. Staggering also keeps the schedule manageable and means priority slots before inspections are easy to arrange. For a multi-site operator, that predictability is often worth as much as the headline saving.
The other portfolio-specific job is records. Different sites cleaned by different people at different times can leave a patchy, inconsistent evidence trail - a real problem when an insurer, auditor or fire officer asks any given site to prove compliance. A portfolio budget should include keeping every certificate and verification report in one consistent format and place, so any location can produce its proof on demand and the whole estate can be shown compliant at once.
Turning it into a compliance calendar
Pulled together, this becomes a compliance calendar: every site, its interval, its next due date and its cost, on one view. That is the artefact a facilities or procurement lead actually needs - it forecasts the year, flags what is due when, supports procurement leverage across the estate, and proves the whole portfolio is being maintained to standard. Built from real per-site frequencies and staggered sensibly, it turns a scatter of one-off quotes into a budget you can defend upward and rely on operationally.
Questions
It is rarely wise. Cooking volume varies, so a blanket interval overspends on quiet kitchens and under-protects busy ones. Set each site's frequency from its own workload and a risk assessment, then cost the estate from those.
Establish each kitchen's interval from a survey, multiply by its per-visit scope, and sum across the estate. That gives a defensible annual figure rather than a blanket guess, and shows where the spend actually sits.
Spreading cleans through the year turns unpredictable cost spikes into a smooth, forecastable flow, keeps the schedule manageable, and makes priority slots before inspections easy to arrange - often as valuable as the headline saving.
Because different sites cleaned at different times can leave a patchy evidence trail. Keeping every certificate and report in one consistent format means any site can prove compliance on demand and the whole estate can be shown compliant at once.
One view of every site, its interval, its next due date and its cost. It forecasts the year, flags what is due, supports procurement leverage and proves the portfolio is maintained to standard - the artefact a facilities or procurement lead needs.
Phoenix Duct Clean · by the numbers
We survey each site, set a frequency to its workload, stagger the schedule so the spend is smooth and predictable, and keep every certificate in one consistent record you can hand to any insurer or auditor.