Granny Flat Costs: $180K-$350K Build Guide for 2026
Granny flat construction costs in 2026 fall between 180000 and 350000 dollars with active building phases lasting three to five months. Well executed projects deliver annual returns of 5 to 10 percent when design, permitting, and management receive proper attention. This guide covers detailed expenses, timelines, and decisions that affect safety, income, and long term value.
Wilson BennettJune 24, 2026