Understand what actually decides local placement, because it is different from ordinary search. Three factors: relevance, meaning how well your listing matches the search; distance, which nobody controls; and prominence, which comes from reviews, consistent information across the web, and being mentioned by other local sources. A national chain competes on brand recognition, which contributes to prominence, and it does not automatically win the other two.
The specific advantage available to you is that a chain optimises generically because it must. A national company cannot produce genuine content about your neighbourhood, cannot list a manager who answers the phone, and cannot describe work performed at addresses in your area, because none of that scales across four hundred locations. Search systems have become considerably better at recognising the difference between a page about a place and a template with a place name inserted.
Reviews are where the gap closes fastest. A local business with forty genuine recent reviews frequently outranks and reliably outconverts a chain location with a generic profile, because local prominence is measured in the area rather than nationally. Reaching forty is a matter of asking consistently, and it is one of the few competitive positions that cannot be purchased quickly.
Photographs are the second underused advantage. Real images of your premises, your team, and your completed work sit alongside a chain's stock photography, and visitors can tell within a second which is which. Adding them regularly also signals an active business, which is itself part of what these systems weigh.
Be specific about service areas rather than claiming everywhere. A profile listing every neighbourhood in the valley reads as an attempt to appear everywhere and performs worse than one naming the areas you genuinely serve. If you create pages for those areas, they need real content about work you have done there, because a page that merely names a place is recognised as thin.
Use the parts of the profile chains neglect. Posts, answered questions, service listings, and attributes are all fields that a corporate location frequently leaves empty because nobody locally is responsible for them. Completing them costs an afternoon and produces a listing that is straightforwardly more informative than the alternative.
Get mentioned by local sources, which is the prominence signal chains find hardest to acquire at the location level. A chamber listing, a local news mention, a supplier page, a community sponsorship, or a trade association entry each associates your business with the area in a way that a national brand page does not.
Then be honest about where you cannot compete and stop spending there. You will not match their opening hours, their inventory, or their advertising budget, and attempting to obscure that costs credibility. Naming the trade openly, and being clearly better on responsiveness, expertise, and local knowledge, converts the asymmetry into a position rather than a weakness.
Respond to reviews on their profiles as well as your own, in the sense of reading them rather than replying. A chain location's complaints are a free description of what customers in your area dislike about the alternative, and addressing those points explicitly on your own site is more persuasive than any general claim about service.
Answer the phone yourself, which sounds trivial and is the advantage customers mention most often when explaining why they left a larger competitor. A chain routes calls through a system, and somebody who reaches a person who can actually decide something has had an experience they cannot get elsewhere.