Wi-Fi for managed and multi-tenant property
In a multi-let building the hardest questions are not technical. They are about who owns what, who pays for what, and what a tenant is entitled to expect on day one. The RF problems follow from the answers.
The problems that are specific to multi-let buildings
Everyone is radiating into everyone else
A multi-tenant building has several independent networks, installed at different times by different contractors, each configured without reference to the others and each almost certainly turned up to maximum power at some point to resolve a complaint. The result is a shared spectrum that no single party controls and every party is degrading. In the 2.4 GHz band, with three usable channels, a building of any size passed that point years ago.
The individual tenant's instinct — add access points, increase power — makes the building worse and their own floor barely better, because contention rises with every radio that can hear another. The only party positioned to improve it is the landlord or managing agent, and most do not know they are able to.
Demarcation is usually undefined until it is disputed
Who is responsible for coverage in the lift lobby? In the stairwell? In the shared reception where a tenant's visitors wait? On the roof terrace that is a common part but is used almost exclusively by one floor? Where does the landlord's structured cabling stop and the tenant's fit-out begin? These are lease and service-charge questions with a technical shape, and they are much cheaper to answer in advance than at the point somebody is unhappy.
Risers, containment and physical access
The physical infrastructure in a multi-let building is shared, congested and frequently undocumented. Risers accumulate decades of cable, much of it abandoned in place and none of it labelled. Containment capacity is finite, and the tenant who fits out last discovers that. Access to risers, plant areas, roof space and other tenants' demises requires permits, notice and coordination that a programme has to allow for. And every penetration through a compartment wall or floor is a fire-stopping obligation on the building, which lands with the landlord regardless of who made the hole.
Base build versus fit-out
What the landlord provides at base build shapes everything a tenant can do afterwards. A building handed over with proper riser capacity, sensible cabinet positions, containment to the floor plates and a documented cabling standard lets tenants fit out quickly and cheaply. A building handed over without those things generates a decade of expensive, uncoordinated retrofit — and re-let delays that cost far more than the original provision would have.
Common parts have become a letting feature
Reception, breakout areas, meeting suites, roof terraces, cycle stores and car parks are increasingly part of what a building is marketed on, and connectivity in them is expected rather than remarkable. A building with genuinely good common-part coverage, and a straightforward way for tenants and their visitors to use it, has something specific to say to an agent — which is a different conversation from Wi-Fi as a cost line.
Re-let and churn
Every time a floor changes hands, the incoming tenant either inherits infrastructure they can use or rips out what the last one left. Cabling that was installed to a standard, documented and labelled, is an asset at re-let. Cabling that was not is a dilapidations argument and a void-period cost.
What we usually find
- Four tenants and four networks, all on maximum power, and a building-wide performance problem that no individual tenant can solve alone.
- Common parts covered by whatever leaks out of the nearest tenant demise, which means the landlord's reception is served by a tenant's network and nobody has said so.
- Risers with no documentation. Abandoned cable no one will authorise the removal of, no labelling, and no record of what capacity remains.
- Fire-stopping missing at penetrations made by successive fit-out contractors, discovered during a survey and landing with the landlord.
- Landlord Wi-Fi with no defined service. An open network in reception that nobody monitors, nobody supports and everybody assumes somebody else is responsible for.
- Base-build provision that made the first fit-out cheap and every subsequent one expensive.
- No usable record of what exists. Which is the fundamental problem, because you cannot manage an estate's connectivity from an assumption about what is in it.
How we approach a managed building
Establish what is actually in the spectrum
A building-wide survey measures every tenant network, the common parts and the neighbouring buildings, and produces a picture of the shared environment that no individual tenant has. That is the document that lets a managing agent have a constructive conversation with tenants about power levels and channel use — with measurements rather than assertions. See on-site surveys.
Define the demarcation, in writing
Which areas are landlord-provided, which are tenant, where the cabling boundary sits, what a tenant is entitled to at handover, and what is available as a chargeable service. Getting this specified is usually worth more to a managed building than any individual technical decision, because it is what prevents the same argument recurring at every fit-out and every re-let.
Design common parts as a service
Reception, lobbies, meeting suites, breakout space, terraces and car parks designed properly, with a landlord network that has an owner, a support arrangement and a defined standard — including how visitors and tenants' guests get on it, and how the traffic is separated from anything else on the building's infrastructure.
Base-build provision that does not constrain the tenant
Riser capacity, containment routes to every floor plate, cabinet positions, power and cooling provision, and a documented cabling standard, all specified so a fit-out can proceed quickly. Where we are working at base build, a predictive design from the drawings establishes what the shell will need before it is closed up.
A coordinated approach across tenants, where the landlord wants it
Where a landlord is willing to set a standard — a channel and power framework tenants are asked to work within, or a single managed platform serving multiple demises with proper separation — the whole building performs better than the sum of its parts. This is genuinely available to landlords and very rarely taken up, largely because nobody has put the measurements in front of them.
Documentation as an asset
As-built drawings, cable test results, labelling schedules, riser records and a maintained record of what is where. In a building with churn, that documentation saves money at every fit-out, every re-let and every dilapidations negotiation. See structured cabling for what we hand over.
Delivering it around tenants and trading
- Permit-to-work and notice. We work to the building's own permit regime, notice periods and induction requirements, and to whatever the managing agent's contractor rules impose.
- Riser and plant access coordinated in advance, including where routes pass through another tenant's demise and consent is needed.
- Fire-stopping done and recorded. Every penetration through a compartment wall or floor correctly stopped, with the records handed over — because that obligation stays with the building.
- Common parts kept presentable. Reception and lobby work out of hours or screened, with finishes protected and made good.
- Phased to the letting programme. Void floors done while they are void, common parts done around trading hours, and fit-out coordinated with the incoming tenant's contractor rather than in competition with them.
- Accredited and insured — CHAS, Constructionline Gold, SafeContractor and TrustMark, held through The Specialist Electrical Group — which is normally the first thing a managing agent's approval process asks for.
- Capacity when the programme needs it. Where a date is fixed by a lease, we can draw on a broader range of engineers and installers rather than looking for a subcontractor at short notice.
Common questions
Who is responsible for Wi-Fi in the common parts?
Whoever the lease says, which in a surprising number of buildings is nobody in particular. It is worth settling explicitly: common-part coverage that is provided by accident, out of a tenant's network, becomes a problem the moment that tenant leaves or changes their configuration.
Our tenants' networks interfere with each other. What can we do?
More than you might think, and the first step is measurement. A building-wide survey shows exactly who is radiating what and where, which turns an unwinnable conversation into a factual one. From there the options run from a voluntary channel and power framework that tenants work within, up to a single managed platform serving multiple demises with proper separation.
What should we provide at base build?
At minimum: riser capacity with room to grow, containment to every floor plate, sensible cabinet positions with power and cooling, and a documented cabling standard. The cost difference at base build is small. The cost difference to a tenant retrofitting it later, and to you in re-let time, is not.
Can you work in a building that is fully let and trading?
Yes. That is most of this work. We operate to the building's permit regime and notice periods, coordinate riser and plant access including through other demises, and phase the programme around trading hours and the letting schedule.
Can good Wi-Fi help us let space?
It is increasingly expected rather than remarkable, which means its absence is noticed more than its presence. A building that can show an agent documented common-part coverage, a straightforward visitor experience and base-build infrastructure a tenant can fit out against quickly has something specific to offer — and a shorter fit-out period is a real commercial argument.
Let's find out what your Wi-Fi is actually doing.
Book a survey and you get measured data, a design you can build to, and a number you can budget against — not an opinion.