Multi-let industrial: who pays for EPC upgrades

Each unit is rated on its own

An estate does not have one certificate. Each separately let unit is assessed in its own right, which means a terrace of six units can hold six different ratings, with different lease expiries and different occupiers. A compliance plan for the estate is really six plans on six timetables.

The practical consequence is that the estate-level question is not "how do we upgrade the estate" but "which units have a lease event coming, and which ones are the compliance risk". Those are rarely the same units.

The split-incentive problem, stated plainly

The landlord carries the obligation attached to letting the unit. The tenant pays for the electricity inside it. If the landlord funds new lighting in a demised unit, the tenant gets a lower bill and the landlord gets a certificate — which may be exactly what the landlord needs, but it is a cost with no direct return, and it is why the funding conversation stalls.

Pretending this problem does not exist is how estate upgrade programmes die quietly. Naming it is how they get funded.

The routes that actually work

• Do it at the void. By far the cleanest. The unit is empty, the landlord controls it outright, there is no tenant to negotiate with, and a better rating makes the unit easier to let.
• Tie it to a lease renewal. The negotiation is already open, the improvement can form part of the deal, and both sides are already talking about the unit.
• Start with the landlord-supplied areas. External lighting, yards, service roads, common areas and any landlord plant are entirely within the landlord gift and need nobody to agree.
• Fund it and recover it through the lease where the terms allow. Whether a service charge or a rent review can carry it is a question for the lease and for a solicitor, not for a contractor — but where it works it resolves the split directly.

Start with the estate, not the unit

The useful first piece of work on a multi-let estate is not a lighting survey. It is a schedule: every unit, its current rating, its lease expiry, and whether the landlord can act in it today. That tells you which units to do this year and which ones to wait for.

It is also the document that turns a vague deadline into a programme, which is usually what a managing agent actually needs before they can get a budget agreed.