District of Columbia Redevelopment Land Agency v. Thirteen Parcels of Land in Squares 859, 912, 934 & 4068

We are concerned here with the attempt of counsel for appellants to lay a foundation which would permit Mr. Lewis, a co-owner of the land at 1424 Florida Ave., N.E., to express an opinion based in substantial part upon his estimate of the value of a second parcel also owned by appellants. The trial judge, after ruling that the latter property (located on Bladensburg Road) was not comparable because it was twice the size of the subject parcel and differently proportioned,1 refused to permit appellant to testi*143fy as to Ms opimon of the vaMe of the subject land to the extent that his opinion…