How much does it cost to add 1,000 square feet to a house

This tool helps you estimate the cost of adding to your house.

House Addition Cost Calculator

This calculator helps you estimate the cost of adding an extension to your house based on various parameters including square footage, number of rooms, and types of flooring, walls, and roofing.

How to Use

1. Enter the total square footage of the addition you are planning.
2. Enter the number of rooms you are adding.
3. Select the type of flooring, walls, and roofing you prefer for the new addition.
4. Click ‘Calculate’ to get an estimate of the total cost.

How It Calculates

The calculator uses predefined costs per square foot for different floor types, a fixed cost per room for different wall types, and per square foot for different roof types:

• Floor Cost: Standard ($5/sq ft), Premium ($10/sq ft), Luxury ($15/sq ft)
• Wall Cost: Dry Wall ($200/room), Plaster ($500/room), Concrete ($1000/room)
• Roof Cost: Shingle ($3/sq ft), Tile ($6/sq ft), Metal ($9/sq ft)

The total cost is the sum of the flooring cost, wall cost, and roofing cost.

Limitations

Please note that this

how much would an addition cost

how much does an addition cost per sq ft