Do I need planning permission for a basement conversion in Lee-on-the-Solent?
It depends on the scope, converting existing basement space without enlarging it or altering the external appearance can often fall under permitted development in Lee-on-the-Solent, while new excavation almost always needs full planning permission.
What’s the difference between converting and excavating a basement in Lee-on-the-Solent?
Converting existing below-ground space in Lee-on-the-Solent without changing the footprint is treated very differently to excavating something new, the latter is considered a material change to the house and almost always needs planning permission.
Do I need a party wall agreement for a basement in Lee-on-the-Solent?
If your Lee-on-the-Solent basement excavation is near a shared boundary or a neighbouring foundation, the Party Wall Act 1996 likely applies, and neighbours need formal notice before work starts.
What waterproofing standard applies to a Lee-on-the-Solent basement?
BS 8102 is the British Standard for protecting below-ground structures against water ingress, and any properly designed Lee-on-the-Solent basement should be specified to it, referenced in Building Regulations Approved Document C.
Does my Lee-on-the-Solent basement project need a structural engineer?
Yes, Lee-on-the-Solent basement work involves genuinely intense structural changes, and councils expect confirmation from a structural engineer that the existing building can safely accommodate the new space.
Can you handle both planning and structural work for my Lee-on-the-Solent basement?
Yes, we handle the full picture for Lee-on-the-Solent basement projects, planning permission where needed, structural calculations, and waterproofing design to BS 8102, as one coordinated service.
