Name the building types on the first screen: two-flat, three-flat, courtyard
An owner spends about five seconds deciding whether your firm runs buildings like his, and a stock skyline photograph answers nothing.
The first screen has one job: recognition. A short line naming what you manage, in the words owners use. Two-flats and three-flats. Greystones. Courtyard buildings. Bungalows converted to two units. Single family homes out in DuPage County. Small mixed-use with a storefront below.
Say where you work in the same breath. The North Side, the South Side, suburban Cook, the collar counties, or whatever subset is honest. An owner who cannot tell within one screen whether you take his address goes back to the results page.
Photographs should be of buildings you actually manage, on real streets, with the alley and the porch and the gangway in frame. A courtyard building in winter says more about your competence than any hero image a stock library sells.
Put the resident portal link in the header where tenants can see it. Every tenant who finds it there is a tenant not calling your office and not clicking your ads to get in.