Room Addition Costs
Construction of a new attached room addition from foundation to finishes including structural framing, roofing, exterior siding, and interior fit-out.
Cost Comparison by Location
50 locations with verified cost data
Cost Comparison — Room Addition
Low
$50
Typical
$63,111
High
$180,000
Low
$50
Typical
$63,144
High
$180,000
Low
$50
Typical
$63,124
High
$180,000
Low
$50
Typical
$63,108
High
$180,000
Low
$50
Typical
$63,163
High
$180,000
Low
$50
Typical
$63,133
High
$180,000
Low
$50
Typical
$63,141
High
$180,000
Low
$50
Typical
$63,136
High
$180,000
Low
$50
Typical
$63,111
High
$180,000
Low
$50
Typical
$63,116
High
$180,000
Low
$50
Typical
$63,185
High
$180,000
Low
$50
Typical
$63,112
High
$180,000
Low
$50
Typical
$63,166
High
$180,000
Low
$50
Typical
$63,135
High
$180,000
Low
$50
Typical
$63,123
High
$180,000
Low
$50
Typical
$63,118
High
$180,000
Low
$50
Typical
$63,117
High
$180,000
Low
$50
Typical
$63,114
High
$180,000
Low
$50
Typical
$63,133
High
$180,000
Low
$50
Typical
$63,135
High
$180,000
Low
$50
Typical
$63,156
High
$180,000
Low
$50
Typical
$63,137
High
$180,000
Low
$50
Typical
$63,143
High
$180,000
Low
$50
Typical
$63,107
High
$180,000
Low
$50
Typical
$63,137
High
$180,000
Low
$50
Typical
$63,131
High
$180,000
Low
$50
Typical
$63,114
High
$180,000
Low
$50
Typical
$63,139
High
$180,000
Low
$50
Typical
$63,134
High
$180,000
Low
$50
Typical
$63,138
High
$180,000
Low
$50
Typical
$63,119
High
$180,000
Low
$50
Typical
$63,141
High
$180,000
Low
$50
Typical
$63,110
High
$180,000
Low
$50
Typical
$63,131
High
$180,000
Low
$50
Typical
$63,131
High
$180,000
Low
$50
Typical
$63,110
High
$180,000
Low
$50
Typical
$63,137
High
$180,000
Low
$50
Typical
$63,133
High
$180,000
Low
$50
Typical
$63,135
High
$180,000
Low
$50
Typical
$63,113
High
$180,000
Low
$50
Typical
$63,108
High
$180,000
Low
$50
Typical
$63,114
High
$180,000
Low
$50
Typical
$63,111
High
$180,000
Low
$50
Typical
$63,118
High
$180,000
Low
$50
Typical
$63,139
High
$180,000
Low
$50
Typical
$63,115
High
$180,000
Low
$50
Typical
$63,160
High
$180,000
Low
$50
Typical
$63,110
High
$180,000
Low
$50
Typical
$63,135
High
$180,000
Low
$50
Typical
$63,126
High
$180,000