Semiempirical inhomogeneous photospheric models of the active region in the vicinity of a small flare (for its main phase) are constructed. They showed that the flare disturbance covered a photospheric region of sizes no less than the square of a supergranule (30 thousand kilometers). As in the flare, the disturbance gradually propagated from the upper to the lower photospheric layers, but it penetrated to lesser depth in the flare vicinity and the variations of the thermodynamical parameters were lesser. Some photospheric layers were heated by 300—500 K in the flare vicinity relative to the quiet photosphere. The concentration of hydrogenic atoms was changed no more than to 1.5 orders.