I build a good Bluebird house with tips. Link to Caring for Bluebirds video: • Caring for Bluebirds Wood Cut from a 6' x 8" x 3/4" board: Top 10" x 10" yep, this is bigger than the board... Back 14" x 5.5" Bottom 5.5" x 5.5" Side A 10" x 7" Side B 11" x 7" Front 10.5" x 5.5" Front Hole Ext: 3" x 3"ish