Construction drawings in Hammersmith and Fulham

A council that grants nearly everything, slowly

Householder statistics here look unusual. The council decided 506 householder applications in its latest year and granted 97.8 per cent, yet only 79.8 per cent were decided within eight weeks or an agreed extension. Approval is rarely the problem. Waiting is.

That timing gap changes how we sequence the work. While the application is with the council, we can finish structural coordination, drainage routes and the thermal specification, so that the construction drawings are ready the week consent arrives. A builder can then sign a contract and order steel while others are still starting their detail design.

A later start also has a cost, because contractors reprice. A fixed, complete set helps you hold the quote you were given.

We use the waiting period for the things that need a second look. Structural openings are checked against the existing walls on site, drain connections are confirmed against the public sewer position, and the ventilation layout is tested for noise to bedrooms. By the time consent arrives, the technical set has been through a full internal check.

Small plots, tall houses

Domestic gardens account for 17.1 per cent of the borough's land, and 24.6 per cent of households live in a house or bungalow. Houses of that kind are often narrow and tall, with a modest rear garden.

Narrow tall houses make stairs the hard part of a loft conversion. A new flight must meet Approved Document K for rise, going and pitch, with clear headroom above it, and the landing has to fit within the existing stair footprint. We draw the stair in plan and section against the roof before the layout is agreed, using the limits in the table.

A loft above a three-storey house also raises the fire question. The escape route runs down the existing stair, so we show protected doors, smoke detection and an escape window to the sizes in Approved Document B.

Basements and lower-ground floors are common in the area's older terraces, and where the project touches one the set shows the damp-proofing strategy and the level of the drain, because water ingress is the usual problem. The heavy end of that work, including full basement excavation, is not what a standard construction set covers and we say so at the quote stage.

Levy, lawful development and the paperwork around the build

Hammersmith and Fulham sits in the first Mayoral CIL band, charged at £80 per square metre before indexation. Extensions above the exemption threshold attract the charge, so our floor-area figures are stated on the drawings to the convention the levy uses.

Not every project needs planning. The council issued 94 lawful development certificates in the data period, which tells you that owners here use the permitted route when they can. Where that applies, construction drawings take over directly from the certificate drawings, and the Building Regulations still apply.

The materials and workmanship standard, and the transfer of domestic client duties to your contractor, are summarised in the handover notes we issue with every set.

The bathroom and kitchen extract rates in the table are worth a mention, because tight plots often push wet rooms to the middle of the plan. A room with no external wall needs a ducted fan to a stated rate, and the duct run, the grille and the discharge point are drawn so that the builder does not discover the route is blocked by a new beam.

What the set includes and where to read more

Expect structural plans, junction sections, window and door schedules, drainage routes, extract ventilation capacities and a specification against Approved Document L. Our structural calculations feed the beam sheets, and a second technologist checks every page.

Read the borough overview at architectural drawings in Hammersmith and Fulham, the approval route at building regulations drawings in Hammersmith and Fulham, or the same service next door in Kensington and Chelsea, Ealing and Hounslow. The general explanation is at construction drawings in London.