Many issues factor into whether a lot is buildable and there is no simple answer. The availability of public water and sewer; the ability to drill a well and/or construct a septic system; and the presence of floodplain, inland wetlands, watercourses, and topography all factor into whether a lot is buildable. Subdivision approval from the Town Planning and Zoning Commission with valid permits from the Inland Wetlands and Watercourses Commission and/or the Windsor Health Department (where required) are a good indication of a buildable lot. To determine how many dwelling units can be built on a lot or whether a lot can be built upon at all, you may need to consult with professionals such as a Certified Professional Soil Scientist, a Connecticut Licensed Land Surveyor, and/or a Connecticut Licensed Professional (Civil) Engineer.