Two Floor Extension Cost

In london and the south east the average cost per m2 is around 1 500 2 000.

Two floor extension cost.

Read about extension costs per square metre in our guide here. How much does a double storey extension cost. If you re adding a second storey the cost will be about 50 percent more than a ground floor extension. How much does a two storey extension cost.

The same calculation used for single storey extensions can also be applied to those that extend over several floors. For two storey extensions add 50 to the cost of a single storey extension. The average cost per square metre for a single storey extension is therefore greater than for a two storey extension with the same footprint all other things being equal whilst a three storey design or a two and a half storey design. The difference is in the type of construction and the quality of the inclusions.

As a general rule an 80 square metre ground floor extension costs between 164 500 and 310 000. The average cost of a double storey extension cost on average 60 000 largely dictated by your location within the country the size of the space and how you plan to use the additional space. Naturally an extension over two floors would increase by 50 per cent of the costs and would be a minimum of around 50 000 dollars plus the additional costs mentioned above. A ground floor home extension is probably a more suitable option if you want to add open plan living such as a new kitchen living and dining area and modernising your dated home.

House extension cost calculator are you looking for more space or thinking of buying a house and extending it yourself. If you need to add children s bedrooms with a bathroom and or a master bedroom with ensuite with an additional living area or parent s retreat then a second storey addition may be a better option. As a basic rule of thumb a two storey extension will cost around 50 more than a single storey extension. That works out to between 2056m2 and 3875m2.

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. If you want to add a bathroom or kitchen add 5 000 10 000.