Barnet's suburban housing creates party wall requirements from side extensions, garage conversions and new build infill. As London's largest borough by population, Barnet sees significant volumes of residential building work across its diverse housing stock, from the inter-war semis of Hendon and Finchley to the period properties of East Barnet and Totteridge.
Our RICS regulated surveyors act for building owners and adjoining owners throughout the London Borough of Barnet. We prepare and serve party wall notices, carry out schedules of condition, and act as agreed or appointed surveyors to produce party wall awards where disputes arise.
While Barnet's housing is generally less dense than inner London boroughs, party wall obligations still arise frequently. Side extensions on semi-detached properties, rear extensions, loft conversions with steel into party walls, and new build developments on infill plots all trigger requirements under the Party Wall etc. Act 1996. We provide clear, proportionate advice for projects of all sizes.
Barnet's semi-detached houses frequently have side extensions built on or near the boundary with the adjoining property. This triggers line of junction notice and, where excavation is close to foundations, Section 6 notice.
Converting a shared or boundary-adjacent garage in Barnet may trigger party wall requirements where structural works affect a shared wall or where new foundations are excavated near the neighbour's structure.
Barnet sees new residential developments on garden land and infill sites. Building a new structure on or near the boundary with an existing property requires party wall notice to the adjoining owner.
Semi-detached and terraced houses in Finchley, Hendon and Mill Hill share party walls. Loft conversions involving steel beams into the party wall or raising the shared structure require notice under the Act.
Full building condition surveys for Barnet properties — inter-war semis, detached houses and period properties.
External wall fire safety assessments for Barnet residential buildings with cladding or external wall systems.
RICS Home Survey Level 2 and Level 3 reports for property purchases across the Barnet borough.
If your side extension is built on or astride the boundary with your neighbour, or excavation falls within three metres of their foundations, you must serve notice under the Party Wall etc. Act 1996. Most Barnet side extensions on semi-detached houses require party wall agreements.
Yes. Even if your house is detached, the Act applies where you build a new wall on the boundary line, or excavate within three or six metres of a neighbouring building's foundations. Garage conversions and new outbuildings near boundaries can trigger requirements.
Fees depend on the type and complexity of works. Standard side extension or loft conversion party wall matters are competitively priced. Contact us for a fixed-fee quote tailored to your Barnet project.
For works to an existing party wall, at least two months' notice is required. For excavation near neighbouring foundations, at least one month's notice. We recommend starting the process well before your planned construction date.