A service standard states what a customer can expect: how quickly a call is answered, how soon work is scheduled, what happens when something slips.
Why stating it matters
It becomes measurable, teachable, and something the business can compete on — see competitive positioning.
Unstated, it varies by who is on duty, and the customer's expectation is set by whoever they dealt with last.
The ones worth setting
Answering — how quickly calls are answered and missed calls returned. This is the one with the most direct effect on revenue, because an unanswered call is usually a lost job.
Scheduling — how soon routine and urgent work is offered.
Arrival — the window given, and the commitment to tell the customer before it is missed rather than after — see dispatching.
Completion — what the customer is told at the end and what they are left with.
First-visit completion
The share of jobs finished without a return trip. It is the standard customers care about most and it is mostly determined by van stock and diagnosis rather than by effort.
Policies that need stating in advance
Cancellation and no-show — whether a charge applies, and how much notice is required. Enforceable only if stated before the booking, and constrained by consumer protection rules for residential work.
Rescheduling — who bears the cost when either side moves an appointment.
Refunds — the circumstances and the timescale. In some jurisdictions a stated refund policy is required, and where none is stated the default rules apply instead.
All three belong in the contract or the booking confirmation.
Goodwill
The discretion to waive a charge or return without billing, and who may authorise it. Given a stated limit, staff resolve problems immediately, which is materially cheaper than a complaint escalating — see complaint handling.
Measuring against them
A standard nobody measures is an intention. The ones above are all countable, and the count is what turns them into management rather than aspiration.