Poor planning, zoning violations, and structural integration mistakes lead to delays and cost overruns. Learn what to avoid.
Charleston zoning restricts lot coverage and setback distance. Designs that violate zoning rules cannot be permitted.
Poor roof tie-in, mismatched floor heights, or inconsistent exterior finishes make the addition look awkward.
Historic district additions require BAR approval, extending timeline 4–8 weeks.
Oversized additions relative to the neighborhood reduce ROI.
Foundation systems must match existing home. Settling issues develop if not coordinated.
Sloped grading directed toward the addition causes water infiltration.
Electrical, plumbing, and HVAC extensions must be properly sized and integrated.
Poor flashing and tie-in create leaks.
Most additions exceed budget by 10–20%. Build in 15% contingency.
Permitting, hidden issues, and material delays extend projects. Plan for 6–12 months.
Decisions made mid-construction cause delays and overruns.
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