A house extension can transform your home, adding valuable living space. Costs cover foundations, structural work, roofing, glazing, internal fit-out, and connection to existing services. In Highgate (N6), costs reflect the area's Inner Premium London market position, with a 15% premium over London averages.
Highgate is a historic hilltop village with stunning Victorian and Georgian properties. Its elevated position and conservation areas make it one of North London's most prestigious addresses.
| Specification | Price per sqm | Typical 25sqm Project | Includes |
|---|---|---|---|
|
Standard
Quality materials, clean design
|
£2,875 – £3,680 | £71,875 – £92,000 | All structural work, standard fixtures, full fit-out and decoration |
|
Premium
Designer brands, bespoke elements
|
£3,680 – £4,600 | £92,000 – £115,000 | Premium materials, designer fixtures, underfloor heating, smart controls |
|
Luxury
Finest materials, fully bespoke
|
£4,600 – £6,325 | £115,000 – £158,125 | Bespoke joinery, natural stone, top-tier appliances, architectural detailing |
Prices include VAT and are based on Highgate (N6) market rates. Inner Premium London pricing reflects the high-quality specification expectations and heritage considerations common in this area. Actual costs depend on site-specific factors. All prices are guide estimates for 2025.
Here's what a typical 25sqm house extension project would cost in Highgate at each specification level.
Much of Highgate falls within the Highgate Conservation Area. Properties near Highgate Cemetery and Waterlow Park face particularly strict planning controls.
Key streets and roads in Highgate include The Grove, Highgate West Hill, South Grove, Swains Lane, Bisham Gardens. Properties in these locations often have specific architectural characteristics that influence renovation costs, including steep topography affecting access and foundations, strong conservation area controls, mature trees and root systems.
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