Double-storey extension drawings in Havering

Permitted development and a Havering two-storey rear addition

The national rule for a second storey is tight: Over one storey: max 3 m beyond the original rear wall and not within 7 m of the rear boundary. Unless the garden is long and the addition shallow, that rule is missed, and the upper-floor rear addition goes through a householder application instead.

That is not a bad outcome. A planning application lets the design be judged against the local guidance above, and a drawing set that already respects the set-in and the daylight line reads as a considered scheme rather than a gamble. Where the house sits on a Green Belt plot, we check the extra tests that apply before we quote a depth. Our house extension drawings in Havering page shows how the two-storey option compares with a single-storey scheme.

Conservation areas and listed homes

Havering publishes 11 named conservation areas and Historic England lists 146 entries inside the borough boundary. In a conservation area the position is plain: No rear extension of more than one storey under PD on article 2(3) land.

A listed house is a separate matter, because listed building consent is needed for most alterations whatever the storey count. We check the address against both lists on day one, so you learn about a restriction before paying for design time.

What the upper floor needs on the drawings

Upper-floor details are fixed at drawing stage, not left to the builder. On windows in a side wall: Upper-floor side windows obscure-glazed and non-opening below 1.7 m above floor. On the roof: Roof pitch of a 2+ storey enlargement to match the original house so far as practicable.

The bedroom above the new kitchen also brings a fire rule. The escape window standard is: Escape window: unobstructed openable area at least 0.33 m², at least 450 mm high and 450 mm wide, bottom of opening no more than 1100 mm above floor. We place and size that window on the elevations so it survives to site.

If you share a wall with a neighbour, remember the notice period: Party structure notice at least 2 months before work. Serving it early keeps the build programme intact.

How Havering has been deciding householder applications

Havering decided 985 householder applications in its latest published year, granted 85.9 per cent and decided 97.8 per cent within the statutory period or an agreed extension. Those figures cover every householder project, not only two-storey schemes, and they predict nothing about a single house.

We use them for planning your timetable. A council that decides nearly all cases on time lets you fix a start date with some confidence once the application is in.

What you receive and what it costs

A Havering double-storey set shows existing and proposed floor plans for both levels, the roof in section and every elevation, with the plot on the location and block plans. It starts at £1,295 with VAT included, fixed before you commit. A second chartered technologist checks each sheet, and we redraw free until approval if the council asks for changes.

For a wider view, see rear extension drawings in Havering if a ground-floor scheme is enough, or the borough overview at architectural drawings in Havering. Neighbouring owners may prefer double-storey extension drawings in Barking and Dagenham. The wider service is explained at double-storey extension drawings.