Remodels of existing residences are generally allowed, but may require a building permit. Remodels of existing residences to another use (i.e. commercial use) are allowed in some zoning districts, but require a change of occupancy permit and may have additional requirements.
Fences and walls are allowed to be built along property lines as long as they do not exceed the maximum height. In general, fences or walls may not exceed six feet in height along the rear and side property lines and no more than three feet in height within the front setback area.