Nobody cares that you cover Brooklyn, they care that you have worked in a 1928 elevator building
Geographic coverage is table stakes here; building experience is the actual credential.
Most remodeling sites open with a service area. In a city where a contractor may work three boroughs and still be wrong for a specific apartment, coverage answers the smaller question.
Put the building experience up top instead. Prewar elevator co-ops, postwar condos, walk-ups above the fourth floor, brownstone parlor floors, two family houses in Queens and Staten Island. Naming those in plain words does more for credibility than a badge row ever will.
Back it immediately. A single line under the headline that says how many prewar apartments you have finished, or that names the eras you work in, gives a nervous owner something to hold on to. Only claim what is true, because the follow up call will test it.
Photography should carry the same message. A finished island shot could have been taken anywhere. A kitchen with a radiator under the window and prewar casing behind it could only be here.