Philadelphia
Citywide costs, programs, and the rowhome quirks lenders care about, from Fishtown to the Far Northeast.
Bucks County
Transfer tax, the 1972 assessment base, school-district spread, county and PHFA help, and USDA in Upper Bucks.
Montgomery County
Four housing markets in one county, a 2% transfer tax, a $10,000 county loan, and the school-district line that decides your tax bill.
Delaware County
Twins and rowhomes near the city line, a near-market reassessment, up to $10,000 from the county, and four towns with a higher transfer tax.
Chester County
The priciest county, with jumbo loans on one end, USDA and a $40,000 county loan on the other, and 1996 assessments in the middle.