Here we present observations with the Advanced Camera for Surveys on the Hubble Space Telescope of the nearby , transition-type dwarf galaxy KK258 = ESO468-020 . We measure a distance of 2.23 \pm 0.05 Mpc using the Tip of Red Giant Branch method . We also detect H \alpha emission from this gas-poor dwarf transition galaxy at the velocity V _ { h } = 92 \pm 5 km s ^ { -1 } or V _ { LG } = 150 km s ^ { -1 } . With this distance and velocity , KK258 lies near the local Hubble flow locus with a peculiar velocity \sim 3 km s ^ { -1 } . We discuss the star formation history of KK258 derived from its colour- magnitude diagram . The specific star formation rate is estimated to be log [ sSFR ] = -2.64 and -2.84 ( Gyr ^ { -1 } ) from the FUV-flux and H \alpha -flux , respectively . KK258 has the absolute magnitude M _ { B } = -10.3 mag , the average surface brightness of 26.0 mag arcsec ^ { -2 } and the hydrogen mass { log } ( M _ { HI } ) < 5.75 M _ { \odot } . We compare KK258 with 29 other dTr- galaxies situated within 5 Mpc from us , and conclude that its properties are typical for transition dwarfs . However , KK258 resides 0.8 Mpc away from its significant neighbour , the Sdm galaxy NGC 55 , and such a spatial isolation is unusual for the local transition dwarfs .