Building work in Hornchurch: area guide

This is our area guide to building work in Hornchurch (RM11, RM12, Havering): the housing, the council rules that apply (Havering Council for planning) and every service we offer here. For whole-house refurbishment go to Home renovation in Hornchurch.

About half of Hornchurch homes were built after 1945 and nearly all the rest between the wars, many of them 1930s semis. A 1930s semi here is a well built house with a predictable set of weak points, and after ninety years most of them tend to arrive at once. Bay roofs never detailed for a century of rain, corroded wall ties, a tired chimney stack, a rear kitchen extended in the 1960s and services replaced piecemeal by four different owners. Each is a separate job. We work across RM11, from the streets off Hornchurch High Street and near Langtons Gardens to the larger properties at Emerson Park, building to an engineer's design when the alteration touches the structure.

Hornchurch has around 9,530 homes on the Council Tax list: 49% post-war, 48% interwar and 3% predate 1919, with 26% flats and 75% houses. VOA Council Tax stock of properties, March 2025, for Hornchurch, Emerson Park and Hylands. Counts rounded by the VOA.

What a 1930s semi needs: the bay is structural before it is a window

Start with the bay. On most of these houses the ground floor bay has a shallow roof, and on many the first floor bay sits directly above it, carried on modest timber and a lintel adequate in 1935 and tired now. Replacement windows fitted without temporary support have been known to let that structure drop, so a bay reinstatement is a structural alteration job with propping, not a window swap. Cracking above the bay, or a sticking bedroom window, is usually the first visible sign.

Then the fabric behind the decoration. Wall ties in cavity walls of this age corrode and expand, lifting the mortar beds and showing as regular horizontal cracks every few courses. Chimney stacks lose their pointing and flaunching and let water into the bedroom ceiling. Hipped roofs spread slightly at the eaves as the timbers age. None is dramatic alone, but there is no sense fitting new rooms into a house whose envelope lets water in, so where several appear together it is a home renovation job with the fabric first.

Remodelling the back of the house means rebuilding the 1960s addition

The rear is where these houses gain most. The original kitchen is small and separated from the garden by a solid wall, and the 1960s addition behind it rarely helps: cold, poorly insulated and on footings that limit what can be done. Rebuilding it to a proper foundation is a house extension job, and opening the original rear wall on a designed beam is RSJ installation, so the new room reads as part of the house rather than a corridor bolted on.

The programme keeps that liveable. Structural work comes first and finishes last: foundations and inspection, then structure and roof, then first fix services, then plaster and second fix. We keep the existing room working as long as the demolition sequence allows and set up a temporary one before it goes. Building control inspects the open excavation before concrete is poured and returns at the other defined stages, and one person holds the programme so nobody chases five separate trades for one answer.

Where to go next for work in Hornchurch: house extensions in Hornchurch, the Havering area guide, building work in Romford, building work in Chadwell Heath and Renovations That Add Value.