House Extension Types We Build Across Manchester
The right extension type depends on your property, plot boundaries, planning context and what you need the space to do. Here's how each option works — and which Manchester properties suit them best.
Single Storey Rear Extension
The most common extension across Greater Manchester — extends the ground floor into the rear garden, typically creating a larger kitchen-diner, open-plan family space or utility room. Single storey rear extensions up to 3m (semi/terraced) or 4m (detached) deep often fall under Permitted Development. Larger extensions up to 6m (semi/terraced) or 8m (detached) are possible via the Neighbour Consultation Scheme.
Double Storey Extension
Adds two floors of space — typically a larger kitchen-diner downstairs and an additional bedroom (often with en suite) above. The most cost-effective way to add a bedroom and a reception room simultaneously, since the groundworks and roof are shared costs. Almost always requires full planning permission. Very popular on 1930s semis in Sale, Altrincham and Stretford where families need both space downstairs and an extra room above.
Side Return Extension
Fills in the narrow side passage that runs alongside Victorian and Edwardian terraced properties — creating a wider, brighter ground-floor kitchen. The transformation is disproportionate to the footprint: a typical side return adds only 1–2m of width, but the ability to open the rear wall and install roof lanterns or skylights turns a dark galley kitchen into a rear-of-house showpiece. This extension type is very common in Chorlton, Levenshulme and Withington's Victorian terrace stock.
Wrap-Around Extension
Combines a rear extension and a side return into an L-shaped footprint that wraps around the corner of the house. The most dramatic transformation at ground level — typically creates a very large open-plan kitchen-dining-living space, often with a central island and bifold doors onto the garden. Wrap-around extensions almost always require full planning permission due to their scale but are becoming increasingly common in Manchester's owner-occupied Victorian terrace streets.
Orangery & Garden Room
A brick-built or timber-framed structure with significant glazing — a step up from a conservatory in terms of insulation, thermal performance and year-round usability. Orangeries use a solid perimeter roof with a central glazed lantern. Garden rooms are typically fully insulated timber-frame structures. Both are popular in South Manchester's more affluent streets — Didsbury, Altrincham and Sale — where garden space is generous and the additional living area adds significant saleability.
Over-Structure / Garage Extension
Building above an existing garage, utility room or single-storey section to add a bedroom, office or bathroom above an already-built structure. Common on detached and semi-detached properties in Stockport, Sale and Trafford where an integral garage is being repurposed at ground level and the roof above it represents unused potential. Structural assessment of the existing walls and foundations is critical — we include this in your free survey.