Conservation Areawrap around
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Victorian Terrace Rear Extension & Side Return
📍 Flask Walk, Hampstead
Cost
£145,000
Value Add
£280,000
Duration
18 weeks
Real Projects • Real Results
Community Project Gallery
Browse before and after photos from real extension projects in North West London. See what's possible, learn from others' experiences, and get inspired.
50+
Projects Completed
£8.2m
Total Value Added
92%
Planning Success Rate
4.8★
Average Rating
loft conversion
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Edwardian Semi Loft Conversion
📍 Creighton Avenue, Muswell Hill
Cost
£78,000
Value Add
£180,000
Duration
10 weeks
Conservation Areabasement
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Listed Georgian Townhouse Basement
📍 Church Row, Hampstead
Cost
£420,000
Value Add
£900,000
Duration
14 months
side return
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1930s Semi Side Return
📍 Colney Hatch Lane, Muswell Hill
Cost
£48,000
Value Add
£80,000
Duration
8 weeks
Conservation Arearear extension
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Victorian Conservation Area Extension
📍 Bisham Gardens, Highgate
Cost
£95,000
Value Add
£250,000
Duration
12 weeks
rear extension-double
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Crouch End Terrace Double Extension
📍 Weston Park, Crouch End
Cost
£125,000
Value Add
£220,000
Duration
20 weeks
Completed a Project in NW London?
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Insights from the Gallery
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Best ROI Project
Loft conversions consistently deliver the best return on investment, averaging 76% ROI across NW London.
Calculate your ROI →⏱️
Fastest Completion
Side return extensions are typically completed in 8-10 weeks, making them ideal for quick transformations.
Side return guide →🏛️
Conservation Success
85% of conservation area projects were approved. Key: traditional materials and pre-application advice.
Conservation guide →