Free estimates work for jobs you can assess quickly or remotely from photos. For jobs requiring a long site visit, a paid diagnostic fee credited toward the work filters out price shoppers while still feeling fair to serious customers.
Free estimates are the norm in handyman work, and for a lot of jobs they make sense. The problem is drive time. An hour of unpaid travel and assessment for a job that may never book is the quietest cost in the trade.
A practical middle position:
Whichever you choose, say it clearly on your website. Ambiguity about whether an estimate costs anything causes hesitation, and hesitation is what stops someone submitting the form.
Also be explicit about what an estimate covers. A quote that does not mention disposal, materials or what happens if the wall opens up worse than expected is where most disputes begin.
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