Velux Loft conversion

Question

I am considering a loft conversion by going into the loft by  putting the velux windows.  This would mean the staircase will be installed by taking space from a small room.  Can you share a typical cost of such a lft conversion in London?  How long would it take?

I am assuming for a semi-detached house, you don't need planning permission but only satisfy the building control and presumeably a party wall.

Danny · Accepted Answer

Planning permission is not requested you are right to fit one window. And stairs. roughly around 4500 supplying materials and fitting

Max · Answer

For a loft conversion to be considered permitted development, not requiring planning permission.
But must :
-Have obscure-glazed side facing windows for any opening 1.7m above the floor
-Not exceed the volume allowance of 40 cubic meters of additional space for terraced houses, or 50 cubic meters for detached and semi-detached houses. Any previous roof space additions must be included within this volume allowance.
-Roof extensions to be set back at least 20cm from the eaves, as measured along the roof plane

Terence · Answer

it will Take roughly 6 to 8 weeks at a cost of around £25-£35,000

Said · Answer

Dear Ilyas,
The cost will be up to 20K and the time will be 5-6 weeks
Regards
Said Yazbeck
3ds Building solutions ltd

Jason · Answer

I believe you can do the work of a building notice but you my find that it cannot be used as a bedroom without planning permission, you can use it as storage tho the cost can vary starting from around £3000 as you will need to put floor joists in as your celling will not be sufficient to walk on

Jacob · Answer

If it just a standard loft conversion prices vary depending on size but potentially start from £40,000 upwards and should take between 8-10 weeks

Velux Loft conversion

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