• My lounge sticks out the front of my house and was wondering if I could do a steel/timber framed extension (assuming the foundation slab is the same for the whole house which has 2 stories).

    Any idea what it would cost me as a shell assuming the foundations are fine and a tiled roof needed?

  • Check the permitted development guide .pdf and the LA planning SPG for resi extensions. Extending above a ground floor bay is beyond the principal building line - don’t know off hand but could need planning. And materials will need to match existing for an easy life.

  • Anything above 4m at the roof apex will need planning, so first floor always will. Whether they want materials to match will vary authority to authority, some prefer that they don’t so you can see what’s original and what’s an extension. There should be a published design code.

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