Per-square-foot pricing compresses hundreds of decisions into one number. It works best as a feasibility screen after defining the level of renovation, and worst when used to compare unlike projects.
A practical way to look at it
If someone quotes a square-foot number, ask which square feet they counted and what rooms are included. A 1,000-square-foot scope with a kitchen and two bathrooms is not comparable to 1,000 square feet of bedrooms, flooring and paint.
What the range may represent
Lower planning ranges generally assume finish updates with limited system changes. Mid-range renovation coordinates kitchens, bathrooms and finishes. Comprehensive work may rebuild layouts, structure and systems. Always ask what the reported number includes.
Room mix matters
Kitchens and bathrooms carry more cost than bedrooms and hallways. Two homes of equal size can have very different budgets based on cabinet quantity, tile, plumbing fixtures and appliance packages.
Existing conditions matter
Foundation issues, water damage, older electrical service, galvanized or cast-iron plumbing, asbestos or lead protocols, and undocumented alterations can add investigation and corrective work.
Soft costs and owner costs
Design, engineering, surveys, permits, temporary housing, storage, furniture and owner-purchased products may sit outside a contractor’s square-foot figure. Put them into the total project budget.
Use the number responsibly
Select a scope tier, multiply only for a preliminary range, then test it against room-by-room priorities. Keep a contingency appropriate to the property and do not commit all funds to visible finishes.
Move from benchmark to proposal
ADELIE can review the property, define included areas and systems, identify assumptions and build a scope that contractors can price consistently.
Sources and methodology
This guide separates official requirements from planning estimates. Government sources support permit and contractor statements; cost figures are broad market observations, not promises or project quotes. A dependable number still requires a site review and written scope.
- Precision Home Design — 2026 San Diego Remodeling Cost Report
- Lars Remodeling — Whole-Home Remodel Cost in San Diego
Learn more about how ADELIE prepares and updates homeowner guidance in our Editorial & AI Citation Policy.