Renovating a Period Property in Highgate: What to Know

A large part of Highgate's appeal is its period housing stock - a close-knit hilltop village of Georgian townhouses, Victorian villas and Arts and Crafts homes, with a strong village-centre feel around Pond Square. That character is also exactly why renovating here is a little different from working on a modern new-build: older buildings behave differently, and the London Boroughs of Camden, Haringey and Islington's planning rules are stricter in places precisely to protect the streets that make Highgate what it is.

What's usually different about older properties

• Foundations - Victorian and Edwardian houses were often built on shallower footings than current standards require, which can mean extra structural work for extensions.
• Walls - solid brick or lath-and-plaster walls behave differently from modern cavity walls and plasterboard, particularly around damp, insulation and chasing for wiring or plumbing.
• Roofs - original timber roof structures vary in condition and pitch, which affects both loft conversion design and cost.
• Windows and doors - in the Highgate conservation area, jointly overseen by all three boroughs it spans, replacements often need to match the original style, materials and even glazing pattern.

Conservation area considerations

If your property sits within the Highgate conservation area, jointly overseen by all three boroughs it spans, several changes that would be permitted development elsewhere - re-cladding, replacing windows with a different style, some roof alterations - typically require planning permission here. It's not just about the paperwork: the London Boroughs of Camden, Haringey and Islington's planning officers will usually expect matching materials and detailing, which can affect your budget as much as your timeline.

Finding the right builder for a period property

Not every builder is equally comfortable with older buildings - working with lime mortar, original timber, or a house that turns out to have no damp-proof course at all requires different judgement from a standard new-build extension. When you're comparing builders for a project in Highgate, ask specifically about their experience with period properties of a similar age, not just their general portfolio.