Ascension Parish, LA Building Setbacks & Zoning: Setback Rules (2026)

Table B, Site Requirements by District (Residential), in Appendix I of the Unified Land Development Code sets the dimensional standards that apply on top of Table A's use permissions. For the Rural (R) district, the table requires a minimum front setback of 25 feet from the property line (or 55 feet, or 75 feet where the lot fronts a state highway, measured from the road centerline), a minimum rear setback of 20 feet, and a minimum side setback of 10 feet, alongside a 20,000-square-foot minimum lot size and 100-foot minimum lot frontage for single-family homes.

The neighboring Conservation (C) and Conservation 5 (C5) districts carry the identical 25/20/10-foot setback figures but larger minimum lot sizes (43,560 square feet and 217,800 square feet respectively), reflecting the parish's tiered approach to low-density, rural and conservation land. Corner lots get limited relief: on lots fronting turning circles, cul-de-sac turnarounds or street corners, the required front yard may be reduced to one-half the normal figure under Table B footnote 3. Because setbacks are administered as part of the development-permit process, the Zoning Official checks a submitted site plan against these figures under Section 17-2090 before any building permit issues, and a landowner who cannot meet a setback must seek a variance from the Zoning Board of Adjustment under Section 17-2090(Q), which requires a showing of unique hardship rather than mere inconvenience.