Try offset of -0.16, 0.89 on ESRI for instance. Some of the houses are drawn aligned with that, others are far off. Try to match up the gps trace on Sherman drive and loop 288 too. There's a huge discrepancy between bing, ESRI, the existing mapped items, and the gps traces. Notably, bing seems shifted to the west from the GPS traces, while ESRI is shifted south. Might be very difficult to untangle until new aerial imagery exists. Next time I'm near there I'll try to get a bunch of good quality gps traces though.