Question 1

What does a hip-to-gable loft conversion cost on a hipped-roof semi in NW4, N12 or N20?

Accepted Answer

Hip-to-gable loft conversions on the semi-detached houses that fill much of NW4, N12 and N20 typically run between £45,000 and £72,000, with the spread driven by whether a rear dormer is added, the steel specification required once the new gable is raised, and the bathroom fitout. Larger roof volumes on Totteridge and Whetstone properties can mean less complex steelwork, pulling costs toward the lower figure. PrimeCraft returns a fully itemised breakdown the same day as the site visit — split by trade, with no single lump-sum figure to query.

Question 2

Which parts of Barnet need full planning permission rather than a lawful development certificate for a loft or extension?

Accepted Answer

Conservation area designations and Article 4 directions in portions of Finchley (N12) and East Barnet mean that even a rear-facing dormer can require a full planning application on those streets rather than simply a certificate of lawful development. In most of NW4, NW7 and N20, by contrast, a hip-to-gable with rear dormer sits comfortably within permitted development. Side-return extensions on EN5 and N20 Edwardian semis are usually PD-eligible provided the addition stays within half the original house width and party-wall neighbours receive the correct statutory notice. At every site visit PrimeCraft confirms the exact planning status of your road before any scheme is drawn.

Question 3

What renovation scope suits the large Edwardian and interwar detached houses in Mill Hill and Totteridge (NW7 and N20)?

Accepted Answer

Deep plots and generous ground-floor footprints in NW7 and N20 open up project types that narrower terrace stock cannot support: full-width two-storey rear extensions, side returns that reconfigure the entire ground floor into open-plan kitchen-dining space, and whole-house renovations working through every room. Period restoration — reinstating original cornicing, sash windows, panelled doors and decorative joinery — is a regular scope item on buildings of this age. Where a project includes heating or boiler upgrades, PrimeCraft coordinates those works through a Gas Safe registered partner. All Barnet projects are fully insured and come with a workmanship guarantee.

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