Really wish folks would learn to check Building and Zoning Files, including the original prospectus / site plan for Townhouse developments in markets where zoning and C.O.'s are required.
Assessment records frequently mean ......diddly. Many Assessors routinely tax ALL Townhouses whether condo or SFR's in puds ........the same, especially when the market determines a 30 x 40 lot has no contributory value vs a townhouse in a condo development. Some property records maintained by Assessors actually include Deeds with legal descriptions. County Recorders do as well. Due diligence means researching ALL readily available Municipal Records - NOT just Assessment Records.
Further, be aware that, due to shortage of manpower, often, Assessors' may simply physically measure 1 style, 1 design, or 1 of several in each Condo or Townhouse development then CLONE sketches and GLA. They often include Finished Basement area in Total GLA for both types of Townhouse style Units. Researching Subject's AND Comparables requires the same awareness and diligence. Make life simple by contacting owners requesting they provide copies of Tax Statements, HOA Fees, Copies of Prospectus, Sketches, and DEED with legal description and have them on the kitchen table when you arrive for the Site Inspection. Some will have all, some will have some, some will have none of the above. Recommend faxing request for info directly to Management Companies, HOA Representatives, requesting same from Listing / Selling Agents, AND FROM CLIENTS i.e. title reports etc. at the time of assignment. In other words, Assessment Records .........are NOT the "be all and end all" when researching either subject's or comparables.
ALSO be aware, PUDS exhibit ALL kinds of mixed uses .......including detached single family, occasionally 2 family units, attached or semi-attached Ranch style, Cape style, Colonial Style, Contemp Style, or Townhouse Style Units.
A Condo can be a stand alone development either located outside a PUD or within a PUD. So can the other unit types above.
Research and Verify data from ALL available sources. Recommend identifying PUDS, CONDOS, AND STAND ALONES in each local municipal market one covers....... set up MASTER DATA files on each ......along with Muni Zoning and Use Codes and the most recent Zoning Maps. Update them annually. Takes time at first........ once you have the data, life becomes a whole lot easier and a whole lot more profitable...........Time IS Money. Geocompetency and Diligence COUNT.