How Much Does an Extension Cost in Camden?

Building an extension in Camden depends on several key factors: the type of extension (single-storey, two-storey, or loft conversion), the size and complexity of the work, local building regulations, ground conditions, and whether you're working in the densely-packed Victorian terraces of Kentish Town or the leafier streets near Hampstead Heath. North London's property values and planning constraints mean extension costs are among London's highest. This guide covers realistic prices for common extension projects in the Camden area, helping you budget accurately before getting quotes from local builders.

Extension Builder Prices in Camden

Prices are indicative averages for Camden. Actual quotes will vary based on job specifics.

What Affects the Cost?

Camden's extension costs reflect central London labour rates and tight planning constraints. Victorian and Edwardian terraces dominate—the majority require Party Wall surveys and structural modifications to remove internal load-bearing walls. Listed property status in much of King's Cross and near the canal adds 15–25% to timescales and design costs. Material costs are consistent across London, but labour here averages £35–45 per hour for skilled brickwork and carpentry. Urban access difficulties—narrow streets, resident permit parking—often delay material delivery and increase logistics. Ground conditions vary: some properties sit on clay, others on gravel, affecting foundations and groundworks pricing.

Frequently Asked Questions