Building work in Highbury: area guide

This is our area guide to building work in Highbury (N5, Islington): the housing, the council rules that apply (Islington Council for planning) and every service we offer here. For whole-house refurbishment go to Home renovation in Highbury.

One plan repeats itself along the streets between Highbury Fields and the Emirates Stadium: a bay to the front, two rooms deep, a narrow closet wing running back over the garden, solid nine inch brickwork and a suspended timber ground floor over a shallow void. Know that plan and you know most of what N5 work involves before the boards come up. On VOA figures, most homes here are flats in divided houses, where the lease and the floor below come first. For whole houses, one person coordinates the engineer, building control and every trade.

Highbury has about 7,960 homes on the Council Tax list: 55% pre-1919, 4% interwar and 37% post-war, with flats making up 79% and houses 21%. VOA Council Tax stock of properties, March 2025, for Highbury and Highbury Fields. Counts rounded by the VOA.

The side return and the closet wing are extension work

The strip of ground beside the closet wing is the single most useful thing a Highbury terrace owns, and filling it turns a corridor kitchen into a room the family actually uses. The complications sit at the joins. That rear wing was built lightly, often on foundations far shallower than the main house, so the new work has to be founded properly and tied in without dragging the old brickwork with it. Opening the back wall for glazing puts a substantial load onto a corner that has never carried one, so it is RSJ installation too, with the opening and bearings designed by an engineer we appoint before pricing is final.

Because the houses are terraced, the excavation and any beam bearing into shared masonry bring duties under the Party Wall Act. You serve those notices as building owner and we plan the programme around the response period. Islington Council building control inspects the excavation before concrete goes in, then the steel, the damp proof detailing, the insulation and the drainage as the build proceeds. We book those visits, meet the inspector and pass you the completion paperwork, which a buyer's solicitor will want to see one day.

What 140 years leave behind: structural work first

Strip a Highbury house back and the surprises are consistent. Joists notched to within an inch of uselessness where a bathroom was plumbed in the seventies. Earlier openings formed on a timber lintel with a bearing you would not trust a shelf to. Ceiling laths that have lost their key and are held up mostly by the paper. Joist ends rotted quietly in the damp masonry behind the bay. None of it is unusual or a disaster, but it is structural alteration work, and an honest price here allows for opening things up and looking rather than pricing off assumptions.

The floors are worth attention while they are open. Airbricks bricked up or buried under a raised patio leave the void beneath the boards unventilated, which begins most timber trouble in these houses. We clear and reinstate ventilation, insulate between the joists while access is easy, and deal with services in the same visit so the boards are lifted once and not three times. Deliveries and waste collections around Highbury Fields are planned around event days at the stadium, which is simply easier than arguing with the traffic.

Where to go next for work in Highbury: kitchen renovation in Highbury, house extensions in Highbury, the Islington area guide, building work in Holloway, building work in Stoke Newington and Staircase Renovation Cost.