M&E drawings in Redbridge

Semis, detached homes and the electrical load they carry

In Redbridge the average semi-detached house sold for £681,463, the average detached house for £1,095,799 and the average terraced house for £534,863. Prices moved -2.7 per cent over twelve months, and owner-occupiers make up 57.1 per cent of households, a settled community that keeps and extends its homes.

A family extension usually adds a kitchen-diner, a utility room and a bathroom, which together bring three extract points, a new circuit for the kitchen and often an outside socket or charge point. We count the load on the schematic and tell the owner whether the existing consumer unit can take it, before a builder finds out on site.

Garages are the other common conversion. A garage turned into a playroom or a home office loses its single socket and its lightly loaded circuit, and needs heating, ventilation, smoke detection and a properly sized supply. We draw the new circuit from the consumer unit, show the extract to the outside and mark the alarm position, so the conversion passes building control without a second visit.

A heavy certificate and prior approval caseload

Redbridge handled 812 lawful development certificate applications in the latest national returns, a heavy caseload that shows how many owners use permitted development. Larger home extension prior approvals ran at 46 granted and 93 refused. Householder applications saw 82.8 per cent granted out of 991 decisions, with 94.7 per cent decided in time. We read those as context for a programme, never as a forecast.

An extension built under permitted development still needs building regulations approval, so the services set is needed whichever planning route is used. The M&E drawings are ready for the building notice or full plans submission.

Planning figures like these shift from year to year and from street to street. They help us tell a client how much waiting to allow before work starts, and the services drawings use that wait: the set is complete by the time the decision arrives, and building control can be approached at once.

Green Belt, heritage and garden plant

About 34 per cent of the borough is Green Belt. Redbridge also has 16 conservation areas, 134 listed building entries and 9 Heritage at Risk entries. In the Green Belt, a new plant enclosure or outbuilding is treated as built form, so we attach plant to the house where we can and keep any freestanding structure small.

Domestic gardens cover 27.4 per cent of the borough's land in the national land use survey, which gives room for heat pumps and garden rooms. The plan shows each unit's position, its cable route and its distance from the boundary.

Trees and hedges along rear boundaries also shape routes. A trench for an outbuilding supply is dug where roots are fewest, usually along an existing path, and the plan shows that choice for the contractor to follow.

The figures on every sheet

Approved Document F sets a kitchen with a hood extracting outside at 30 l/s, a utility room at 30 l/s and a bathroom at 15 l/s. A three-bedroom house needs 31 l/s as a whole dwelling.

Electrical work is notifiable for new circuit; consumer unit replacement; additions or alterations to circuits in a special location. A gas appliance that is new or replaced, apart from gas used only for cooking, needs a carbon monoxide alarm in the room, to BS EN 50291-1:2018.

Scope, fee and linked pages

A Redbridge set holds power and lighting plans, a ventilation layout, alarm positions, a consumer unit schematic with load list and drainage notes. There is no published starting price, so we run a free constraints check and quote a fixed fee.

The borough overview is at architectural drawings in Redbridge, the national guide at M&E drawings, and the construction side at building regulations drawings. A neighbouring borough is covered at M&E drawings in Newham.