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A conversion borough, and conversions fail differently from purpose-built flats

Census 2021 recorded that 24.54% of Hammersmith and Fulham households live in part of a converted or shared house, including bedsits, the second highest share of the 33 London local authorities against a London figure of 11.06% and an England figure of 3.50%. A further 48.10% are in a purpose-built block and 18.81% are terraced. Detached and semi-detached houses together account for 5.82%.

A purpose-built block was designed as flats. The riser, the stack, the tank position and the isolation points were drawn before anyone lived there, and there is usually a plan. A conversion was designed as one house. Somebody later cut it into flats, and the services were adapted rather than designed. The bathroom on the first floor is often over the kitchen on the ground floor because that was where the stack already was. The incoming main frequently still enters where the Victorian kitchen used to be, which may now be inside somebody else's demise. The stopcock that isolates your flat may not exist as a separate thing at all.

That is why the first useful question on a Hammersmith and Fulham leak is almost never what has failed. It is whose it is. We answer that with acoustic and thermal tracing before anything is opened up, and with CCTV on a shared stack before anyone is billed for it, because in a converted house the difference between a service charge item and a personal repair is often a single joint.

The tenure mix means the person at the leak usually cannot authorise the repair

36.38% of households here rent privately, sixth highest in London, and 29.82% rent socially, ninth highest, of which 15.25% rent from a housing association or other social landlord rather than the council, sixth highest in London. Only 32.11% own, and just 16.75% own with a mortgage or loan. Put together, more than two thirds of the borough's households do not own their home.

In practice that shapes every out-of-hours conversation. The person standing in the water at 1am is very often a tenant who has never seen a stopcock, does not have the freeholder's number, and cannot commit to spend. So we work in a fixed order: isolate, stabilise, dry, then diagnose, then quote to whoever is actually paying, whether that is the tenant, a letting agent, a housing association or a block management company. We will not hold a property to ransom while the paperwork catches up, and we will not do chargeable work nobody has agreed to.

68.76% of homes here heat on mains gas alone and 12.35% on electricity alone, both close to the London average, with 4.05% on a district or communal heat network. So unlike some inner boroughs, the gas boiler is still the default here, and the most common winter call is a boiler in a converted flat that was sized for the whole house before it was divided, or sized for a flat and then asked to serve an extension nobody told it about.

Forty-odd conservation areas and Article 4 directions across the Victorian grid

Hammersmith and Fulham is heavily designated. The MHCLG planning data platform lists 48 current conservation area records for the borough, and the council's own pages name Barons Court, Lakeside/Sinclair/Blythe Road, the Gunter Estate, Hammersmith Grove, Moore Park, Olympia and Avonmore, Parsons Green and Walham Green among the areas where Article 4 directions restrict permitted development. The council states that Article 4 Directions are in place to protect the character and appearance of buildings and the amenity of neighbouring residents from potentially harmful alterations and extensions.

The plumbing consequence lands on external work rather than internal. Stopping a leak, changing a cylinder, re-piping a bathroom inside the flat is not a designation question. A new soil or vent pipe in a new position on a visible elevation, a boiler flue on a street frontage, an external condensate run, or replacement rainwater goods in a material that does not match: those are. In a borough of long uniform terraces, the elevation is the character, and a plastic pipe in the wrong place is exactly what the designation exists to catch.

We separate the two jobs deliberately. The out-of-hours visit makes the building watertight and the water supply safe using reversible work. The permanent reinstatement gets specified properly, and where consent or an Article 4 direction is in play we tell you before we start rather than after an enforcement letter.

Three licensing schemes, one of them designed street by street

This borough runs an unusual licensing map. Mandatory HMO licensing applies as it does everywhere, to properties occupied by five or more people making up two or more households. On top of that the council operates a borough-wide additional HMO licensing scheme catching smaller shared houses and flats occupied by three or more people in two or more households sharing amenities. The scheme originally started on 5 June 2017 and was renewed to run from 5 June 2022 until 4 June 2027, covering the whole of the borough.

The third scheme is the unusual one. Rather than designating wards, Hammersmith and Fulham's selective licensing scheme is drawn around a short list of named streets, reported as 24 of them including Askew Road, Goldhawk Road, King Street and Uxbridge Road, running on the same dates as the additional scheme. A selective licence covers letting to a single household or up to two unrelated occupants in those streets. That means two houses a hundred metres apart can sit under different regimes, which is not how most London boroughs do it and is not something a landlord should assume from experience elsewhere.

For us that turns a repair in a licensed property into a documentation job as well. Where we carry out gas work we leave the Gas Safe certificate covering the appliances we touched, plus a dated record of the fault, the fix and anything left outstanding, in a form a licensing officer will accept without a second visit.

The bridge changes how long it takes to get to you, and it has done since 2019

Hammersmith Bridge is owned by Hammersmith and Fulham Council. Transport for London states that the bridge is open to people walking and cycling and to river traffic beneath the bridge, although it is still closed to all motor traffic, that it closed to motor traffic in 2019 and to all traffic in 2020, and that it reopened to pedestrians, cyclists and river traffic in July 2021. Cyclists and electric scooter riders must dismount and walk across.

That is not trivia. It removes one of the borough's river crossings for vehicles, which changes the practical routing for any vehicle approaching the Fulham and Hammersmith riverside from the south side of the Thames. We do not publish per-area response times, because we have no honest per-area data to base them on. What we will tell you is that a van coming to SW6 or W6 is routed on the assumption that the bridge is not available, which is the difference between an accurate estimate and an optimistic one.