The biggest factors that affect price are the size of the extension your location and the number of dormers.
Truss roof loft conversion cost.
How much this work costs will depend on the existing roof structure and any planning constraints but use our guide below to give you a rough idea of how much this type of work should cost.
Dormer loft conversion costs.
Add to this the average cost of a loft conversion which is between 10 000 and 40 000 again depending on the interior fittings and the type of loft conversion you have for instance including dormer windows will increase the cost as will a mansard loft conversion.
It typically costs around 4 000 for a set of 10 telebeam trusses sufficient for loft conversion of a small semi.
Today a quick search on google shows loft conversion companies claiming the work can be done for as little as 18 000.
As the simplest method of converting a loft this is the cheapest way to proceed though it is only suitable for some homes.
The cost is generally between 15 000 and 20 000 with prices tending to be higher in london and the south east where tradespeople are more in demand.
It will use the current cost of wooden rafters based on the average price found at home improvement stores.
This online truss calculator will determine the all in cost of your truss based on key inputs related to the pitch width and overhang of your roof.
How much does a loft conversion cost.
A loft conversion typically costs between 21 000 44 000.
This will often work out cheaper than using conventional steels once you factor in savings on labour access and plant hire etc.