Leading retrofit programmes

Barbra Carlisle • May 15, 2026

Building high performing teams when delivering retrofit programmes

When people talk about retrofit, the conversation usually starts with technology.


Heat pumps. Insulation. Decarbonisation.


But leading retrofit programmes especially at scale isn’t so much a technical challenge as a leadership challenge.


The UK’s retrofit challenge is vast.

  • Around 80% of the homes we’ll use in 2050 already exist today
  • That equates to around 29 million homes needing some level of upgrade
  • And to stay on track, delivery needs to reach up to 1 million homes per year by 2030


This isn’t incremental change. It’s system-wide transformation.


And that’s where complexity rears its head.


Retrofit isn’t one problem it is multiple, layered together


From the outside, retrofit sounds linear: assess → design → install → improve.


In reality, it’s anything but.


Leaders are managing:


1. A fragmented system

Policy, funding and regulation aren’t always aligned.


Programmes often operate within:

  • shifting government priorities
  • short-term funding cycles
  • evolving standards

That creates hesitation and slows decision-making.


2. A highly variable asset base

No two buildings are the same.


The UK has some of the oldest and least energy-efficient housing stock in Europe think..

  • different construction types
  • different historical constraints
  • different retrofit limits

Which means: there’s no standard solution.

Every project brings new unknowns.


3. A skills and capability gap

The ambition is accelerating faster than the system can support.

  • The industry needs hundreds of thousands of additional skilled workers
  • Training, accreditation and trust in delivery all lag behind demand

And without the right capability in place: quality can drop and confidence goes with it.


4. Pressure to deliver at pace

Retrofit is no longer a “nice to have.”

It’s central to:

  • net zero targets
  • energy security
  • addressing fuel poverty


But scaling too fast creates risk.


The result? Loss of trust from residents, funders and government.


The real leadership challenge


Leading retrofit isn’t about controlling a predictable system.


It’s about operating in:

  • ambiguity
  • competing demands
  • incomplete information

You’re balancing:

  • technical decisions
  • commercial pressures
  • stakeholder expectations
  • and human impact

At the same time.


What effective leaders do differently


The leaders I see handling this well aren’t trying to simplify the work.


They’re doing something more deliberate:

→ They create clarity where the system doesn’t provide it

Clear priorities. Clear decisions. Clear expectations.


→ They slow things down at the right moments

Particularly at the assessment stage because getting it wrong early is expensive later.


→ They focus on coordination, not just delivery

Retrofit succeeds (or fails) at the interfaces: between contractors, residents, funders and policy.


→ They accept that this is adaptive work

Not everything can be standardised. Judgement matters.


Final thought

Retrofit is often framed as an engineering challenge.

But at this scale, and with this level of complexity, it’s something else entirely:

It’s a leadership test.

One that’s playing out across thousands of projects, in real time.


And one that will define whether the UK actually delivers on its net zero ambitions or not.


šŸŽ§ I explored this further in my recent conversation on the RISE Retrofit podcast including what it really takes to lead through this level of complexity.


Ideas and thoughts on how to lead well through complexity and change

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