Cost Per Square Foot

Cost Per Square Foot

Cost per square foot provides a rough benchmark for construction pricing, calculated by dividing total project cost by finished square footage. In San Diego, typical ranges are: $150-250 per square foot for whole-house remodels, $200-400 for additions, and $250-400+ for new custom homes. However, this metric has limitations—smaller projects cost more per square foot due to fixed costs, high-end finishes dramatically increase per-square-foot costs, and complex projects cost more than simple rectangles.

Why It's Useful But Limited

Cost per square foot helps with initial budgeting and comparing similar projects, but shouldn't be the sole pricing metric. Factors affecting per-square-foot cost include: finish level (builder-grade vs. luxury), project complexity (simple addition vs. complex remodel), site conditions (easy access vs. constrained), and demolition requirements. A 200-square-foot bathroom remodel might cost $500 per square foot ($100,000), while a 2,000-square-foot basement finish might cost $80 per square foot ($160,000)—both reasonable despite the difference.

Cost Ranges by Project Type (San Diego)

• New custom homes: $250-400+ per square foot
• Whole-house remodels: $150-250 per square foot
• Additions: $200-400 per square foot depending on complexity
• Kitchen remodels: $150-400 per square foot with high variation by finishes
• Bathroom remodels: $300-600 per square foot (smaller spaces cost more)
• Basement finishing: $70-120 per square foot for standard finishes