Construction drawings in Haringey

Article 4, conservation and heritage numbers for Haringey

The borough publishes 33 conservation areas and 25 Article 4 directions, and Historic England lists 289 entries inside its boundary. A further 21 entries sit on the Heritage at Risk register. Together they mean many Haringey addresses carry a restriction of some kind.

Article 4 matters to the order of work. When a direction removes permitted development for a front elevation or roof, the planning route must be settled before the technical set is detailed. We run the constraints check first, then tell you whether the scheme goes through permitted development, a lawful development certificate or a householder application.

If your plan includes splitting a house into rooms let separately, the construction set has different fire and sound requirements, and the planning position for a house in multiple occupation is checked on its own.

Several of those directions cover only part of a street, so two neighbouring houses can be treated differently. We read the council's maps against your boundary, not against the street name, and report the result in plain English before any design fee is committed.

Larger extensions and the prior approval figures

The council granted 13 prior approvals for larger home extensions in the data period and refused 19. Refusals outnumber approvals. That is a high refusal share, and the data does not record the reasons.

It affects the drawings in two ways. First, the technical set should not be committed to a scheme that depends on a larger-extension prior approval until it is granted. Second, where the prior approval fails, a lower-impact scheme goes forward as a householder application, and we can adapt the structural and drainage layout without starting again.

Householder statistics are healthier. The council decided 689 applications and granted 90.3 per cent, with 94.3 per cent decided on time or within an agreed extension. A properly drawn householder scheme therefore has a good record locally.

A borough-wide statistic says nothing about your own neighbours, and we never present it as a forecast. What the figures do show is that the careful route, a modest depth, a clear step back from the boundary and a clean drawing, is the one that has tended to succeed.

Gardens, green edges and the shape of the plot

Domestic gardens take up 26.6 per cent of the land and green belt polygons cover 2 per cent of the borough, so outbuildings and garden rooms are common, and a few homes face tighter rules at the green edge. The houses share is 38.9 per cent of households, with the balance in flats.

A long garden invites a long extension, and a long extension brings drainage into play. A new rear room can cross an existing run, so the set shows the position of manholes, gullies and any shared drain, along with cover levels and falls. Building over a public sewer needs a separate agreement, which we flag early.

Mayoral CIL here is £60 per square metre in the second band, and the borough charges its own levy under the Haringey CIL Charging Schedule 2022. Floor areas on our drawings follow the levy's convention.

Garden rooms at the bottom of a long plot are a good example of work that needs a technical set even when planning is not required. The foundation, the electrical supply, the insulation and the fire distance to the boundary all need showing, and a builder who prices without them will add a contingency.

Next steps in Haringey

Our borough overview is at architectural drawings in Haringey, and the approval stage is explained in building regulations drawings in Haringey. Where steel is needed, our structural calculations are drawn into the set.

Next door, the same method applies in Barnet, Hackney and Enfield. The general service is described at construction drawings in London.