Local Services Ads and search ads do different jobs in a plumbing account
They sit in different positions on the page, price differently, and deserve separate budgets and separate expectations.
Local Services Ads sit above the paid text ads, charge per lead rather than per click, and carry a screening badge that matters to a homeowner comparing three names at speed. For emergency work in a residential trade, that is a strong position.
They are also blunt. Control over matching is limited, disputes over bad leads take effort, and the badge requires license and insurance documentation kept current. Somebody has to own that admin or the whole channel quietly stalls.
Search ads give you control that LSA does not: exact match on the queries you want, ad copy that speaks to a repipe rather than a clog, and sitelinks that route commercial callers away from the residential path.
We would generally run both, keep them budgeted separately, and never let a blended cost per lead hide which one is producing work. If your phone system cannot tell them apart, fix that before adding budget.