Find Gehan Homes in the 77304 zip code or Conroe. There's lots of builder jargon out there, but if you are in the market, then it's best to know a few terms. Quick delivery homes are called spec homes or inventory homes. These are either standing inventory or under construction. Plans are floorplans that you can have built just for you. Some people refer to them as models, but whatever you call them, they often come in several design variants called elevations. The same plan can look very different with brick, siding or stone exteriors, but the entire outline can change from one elevation to the next. This view on New HomeSource shows all the Gehan Homes plans and inventory homes in 77304 zip code, Conroe and the Houston area.