Side extensions · London
Side extensions in Streatham.
A side extension in Streatham reclaims the dead space down the flank of the house and keeps it proportional to the original. We design it, then carry it through London Borough of Lambeth to a construction-ready package.
How the path runs in Streatham
The Plan Hub takes side extension work in Streatham from first idea to a construction-ready handover. Brief, measured survey, design, planning, tender, in order, held by one team that owns the thread.
London Borough of Lambeth is the authority that decides any application in Streatham. We prepare the drawings and manage that submission, then hand the package to your builder. Our job stops where construction begins.

Common questions
Do I need planning permission for a side extension in Streatham?
Some side extension work falls under permitted development, but limits on size, height and materials apply, and they are tighter in conservation areas and on Green Belt land. London Borough of Lambeth is the authority that decides any application or issues a lawful development certificate for Streatham. We prepare the drawings and manage that submission for you.
What does the design and planning stage involve for a side extension?
It runs in order: brief, a measured survey of the house, design, then the planning submission to London Borough of Lambeth. One team holds the thread through each step, so nothing is dropped between people. You receive a contractor-ready package at the end.
Does The Plan Hub build the side extension as well?
No. The Plan Hub takes the work through design and planning to a construction-ready handover. Your chosen builder carries out the construction in Streatham. Our job stops where theirs begins.
Other work we cover in Streatham
Side extensions nearby in London
Thinking about side extension in Streatham? Start with a conversation.
Get in touch