Cost Of Building A Second Floor Extension

Second storey addition costs and design factors.

Cost of building a second floor extension. Many sources claim that a second storey will be priced at only half or two thirds of the cost of the first floor so if the single storey extension is 20msq and costs 22 000 the second floor could be an additional 11 000 for a total of 33 000. Planning and building requires a lot of effort and time. According to homeadvisor the average cost for building additions is between 80 to 200 per square foot without regard to whether it is up or out. Planning and building cost.

In london maybe even up to 50 000. In general it is less expensive to build up than out but that comes with a lot of caveats. While it is usually cheaper to build up than out that s just the actual construction expense. A second storey addition can cost between 1 850 and 3 300 per square metre depending on the quality and price of construction materials and inclusions and if your ground floor foundations need reinforcing to carry the load of the extension.

These prices are for for a good quality extension. Let s say you re looking for a 5m x 5m extension. This is one of the first things that you will need to decide and is very important to the overall design. Basic quality would naturally cost less and premium would be more.

The cost of an extension might be around 32 000. The cost of using different materials like timber flat pack and glass will have an impact on the overall estimate. The average cost to build a home addition or add a room is 48 000 with most homeowners spending between 22 500 and 74 000 a room addition costs from 86 to 208 per square foot depending on the room size materials labor location and if your building up or out. For example a single floor extension with timber will cost around 1 500 to 2 100 per m2 while one with vinyl will cost around 1 350 per m2.

Double vs single storey extension costs. That s just for building the extension. Average cost to build an addition. One option involves tearing off the roof and building a whole new upper level from scratch this is likely what you would do if you re adding a second story to a ranch style house.

A 2 nd storey addition will involve costs on the ground floor to modify the floor plan to include a location for the stairs.