The Square Mile
Commercial building maintenance in the City of London
The densest office stock in the country, split between glass towers and listed banking halls, in a district that empties at the weekend and locks its roads at Bank. Maintenance here is as much about access as about the work.
What the building stock actually is
The Square Mile holds more office floorspace than any comparable district in the country, and the City Corporation plans to add substantially more of it by 2040, most of it in the cluster of towers around Bishopsgate, Leadenhall Street and Fenchurch Street. That is the City people picture: deep floor plates, central chilled water, building management systems, a landlord engineering team and a goods lift you book by the slot.
The other City is older and far more numerous by building count. West of Bank, along Cheapside, Fleet Street and the lanes off Queen Victoria Street, the stock is Victorian and Edwardian banking halls, 1950s infill and 1980s blocks that have been refurbished twice since. More than six hundred buildings in the City are listed and there are twenty-eight conservation areas, so a large share of the working stock carries constraints on what can be altered and how a repair has to be done. The Corporation now steers owners towards retrofit rather than demolition, which means more period buildings staying in use with new services threaded through old fabric.
The two halves need different maintenance. A tower needs a contractor who can work inside a landlord’s permit system on a floor with a bank above and a law firm below. A retrofitted period building needs one who understands where the original risers run, what the listing covers, and why the basement floods.
Who is buying, and what they expect
In the towers, the client is usually a managing agent or the landlord’s own building management with an engineering team on site. They buy the tenant-side work the landlord does not cover: fan coil servicing inside the demise, tea points and washrooms, small power, decoration, fit-out making-good, and the compliance items the lease pushes onto the occupier. They expect method statements before the visit, a permit to work for anything on the services, hot works permits for anything with a flame, and evidence of insurance before a pass is issued.
In the smaller period stock the buyer is more often a managing agent running a multi-let building with no staff on site, or an occupier who holds the whole building on a full repairing lease. There the questions are different: who owns the roof, who owns the riser, what the service charge pays for, and which repairs need listed building consent. The insurance, legal and financial occupiers who fill both halves of the City share one expectation, which is that nothing disruptive happens during the trading day.
Access, hours and the weekend window
The City empties on Friday evening and does not fill again until Monday morning. That is the working window for anything noisy, dusty or that takes plant offline, and it is shared with every other contractor in the building, so it has to be booked through the building manager and often notified to the other tenants first.
Weekday work runs after seven in the evening in most buildings and before seven in the morning in a few. Reception sign-in, photo passes and escorted access to plant rooms and roofs are standard, and security will not admit an engineer whose visit has not been logged in advance, which matters for reactive calls: the reactive line has to hold each building’s access procedure, not just its address.
Bank junction is closed to all vehicles except buses and cycles from seven in the morning to seven at night on weekdays. A van cannot cross the centre of the City in the day, so routes and arrival times are planned around it.
Parking, loading and permits
There is almost no on-street parking in the Square Mile. Where loading is allowed it is limited to forty minutes, and anything longer needs a dispensation from the City of London Corporation, which carries a daily charge and needs three working days’ notice. The whole district sits inside the Congestion Charge and Ultra Low Emission zones.
In practice this means reactive engineers arrive with the kit they can carry, park in a building’s loading bay if it has one, and otherwise use the nearest car park and walk. Planned work with materials is booked against a dispensation or a loading bay slot in advance, with deliveries timed for early morning. A contractor who has not priced this in either turns up late or passes the parking tickets on.
What fails in City buildings
The towers fail at the interface between landlord and tenant systems: fan coil condensate, chilled water control valves, comms room cooling, sensor-operated washrooms and glass door hardware. Nothing is large, but everything is on a high floor and behind a permit, so each item takes longer than it would at ground level.
The period stock fails in the places its age dictates. Deep basements below the water table rely on sump pumps and pumped drainage, and a failed pump floods a plant room. Flat roofs and parapet gutters between adjoining buildings block and back up. Original cast-iron soil stacks and lead-lined lightwells leak into the floors below. Split air conditioning added floor by floor over thirty years fails unit by unit, with no drawings. Long escape routes through multi-let common parts carry emergency lighting and fire doors that are rarely checked at the frequency the building needs. These are the calls that come in, and the planned schedule is built to get ahead of them.
Related pages
The sectors and services that apply in City of London.
Common questions
Questions we get asked in City of London.
How quickly can you get to a building in the City of London?
Response bands are agreed per contract and per priority. For the Square Mile we plan around the road restrictions rather than the map distance: an engineer travelling in the day routes around Bank junction and arrives on foot from the nearest legal stop, which is built into the times we commit to.
Can you work inside our building’s permit to work system?
Yes. Method statements and risk assessments go in before the visit, hot works permits are requested for anything that needs one, and engineers carry the insurance and identification your building manager asks for. Buildings with a landlord engineering team get the tenant-side work coordinated through them.
Do you work in listed buildings?
Yes. Repairs are done like for like where the listing requires it, and anything that would alter listed fabric is flagged before it starts so the managing agent can decide whether consent is needed. Surveying and refurbishment sit inside the same group if the job grows beyond maintenance.
Is weekend working the default in the City?
For anything noisy, dusty or that takes plant offline, yes. Quiet work such as lamp changes, washroom repairs and inspections happens in the day, so out-of-hours rates are paid only where the building actually needs them.
Can one contract cover both the landlord and the tenants in a multi-let building?
Yes, and it is often the cleanest arrangement. Common parts and central plant are invoiced to the service charge and demised areas to each tenant, with the boundary written down at the start so nobody argues about who owns the riser later.
Also covered from here
Neighbouring areas.
Aldgate and Whitechapel, Liverpool Street and Spitalfields, Shoreditch, Clerkenwell and Farringdon, Holborn, Bankside and Southwark across the river, and Canary Wharf to the east.
Book a walk round
Tell us about the building in City of London.
What it is, where it is, and which part of running it is causing the pain. We walk it, write down what is there, and come back with a scope and a price.