Home Remodel Near San Diego, CA

It depends mostly on whether the space already exists. Renovating 600 sq ft usually costs $10,000–$25,000, converting unfinished space $24,000–$55,000, and building it new $127,000–$265,000.

It is usually the cheapest way to add living space, as long as the basement is dry. Fix any water problem first, and plan egress windows for any room that will be used as a bedroom.

Hidden conditions and changes of mind. Older houses often hide knob-and-tube or ungrounded wiring, old plumbing and little insulation. Homes built before 1978 may also have lead paint, and some older materials contain asbestos, which should be tested before demolition. Keeping 10–15% of the budget in reserve covers most of it.

Projects that add usable bedrooms and bathrooms tend to add the most value, but few remodels return their full cost at sale. The Cost vs Value report consistently shows smaller, midrange projects recouping more than large upscale ones.