Development Intervention Design
Development intervention design gives you an intervention set: a sequenced, staged plan of the specific changes to make - each with the reason it will work, the level it works at, who owns it, and how progress gets measured. We design it with your people, so the plan is theirs before it starts.
Our development intervention design gives you an intervention set your organisation can act on, and we design eight parts: the specific changes to make, how each fits the way you actually work, where you intervene and at which level, the order they land in, the readiness and resistance each is built for, who owns and sponsors each one, how progress is measured and embedded, and the capability that stays behind. You walk away with a plan of named changes, each carrying the reason it will work, ready to put into practice.
An intervention set works when the people who run it helped shape it. So we design with your people, drawing on the knowledge already inside the organisation and combining it with our outside frameworks. The plan comes out both grounded and owned, and your people come away more able to design the next intervention themselves.
Across 15 years of tracking, only about 30% of organisational transformations succeed at both improving performance and sustaining the gains. At organisations that acted on the full set of transformation practices across goal-setting, design and implementation, the success rate rose to 78%. The design phase is where the odds are set (McKinsey Global Survey, 2021).
When development intervention design helps
Development intervention design is the next step once you know the organisation needs to change - often straight after a diagnostic has shown where. These are the situations we are most often asked into. If one sounds like yours, this is a good place to start.
The situation | How it helps |
|---|---|
A diagnostic has shown what needs to change and you need what comes next | Turns a clear read of the organisation into a worked-out intervention set, so you move from knowing the problem to having a plan built to work |
Past change efforts landed as a list of activities that faded | Designs each intervention with the reason it will work and how it gets embedded, so the changes hold rather than drift back |
The organisation has grown and how you work has not kept up | Designs the changes to structures, practices and ways of working sized for where you are heading, and sequences them so the organisation can absorb them |
Change keeps stalling on resistance you did not plan for | Designs each intervention for a real level of appetite and capability, and builds in what raises commitment and lowers the resistance that stalls things |
You have a strategy and need the organisation to change to deliver it | Designs the specific changes to how people work and how the organisation is run so the strategy has an organisation that can carry it |
You want changes your people will actually own | Builds the intervention set with the people who have to run it, so it lands as theirs and gets carried rather than filed |
What we design
We design eight parts of the intervention set, and make each one concrete enough to act on:
- The intervention set - The specific, named changes we design - which practices, structures, rituals and ways of working actually change - each drawn from the family that fits the problem rather than a favourite off-the-shelf activity.
- Fit with how the organisation works - Each intervention is designed against the real organisation - its work, its people, its structures and rewards, and its actual culture - so the changes sit with the grain of the place rather than fighting it.
- Points of leverage and level - Where we intervene, and at which level - individual, team or whole system - chosen so a small set of well-placed changes moves the organisation rather than spreading effort thin.
- Sequence and staging - The order and pacing of the interventions, so change lands in a rhythm the organisation can absorb - what has to come first to make the next thing possible, and what can wait.
- Readiness and resistance - Each intervention is built to raise dissatisfaction with the status quo, a clear picture of the future and credible first steps, and to reduce the resistance that would otherwise stall it.
- Ownership and sponsorship - Who leads, sponsors and carries each intervention, so the design has named owners inside the organisation and the sponsorship it needs to hold, not a consultant propping it up.
- Measures of progress and institutionalisation - What we watch to know an intervention is working, the built-in moments to adjust it, and how a change that works gets embedded so it holds after the effort ends.
- Capability left behind - The habits and routines that leave your people more able to spot, design and run the next intervention themselves, so development continues without us.
Why these eight
These eight are the parts that have to line up for an intervention set to work as one whole. A list of changes with no reason behind each one is a wish list; changes with clear reasons but no sequence collide with each other; and a well-ordered plan with no named owners has no one to carry it once we leave. The parts that get skipped most - fit with how the organisation actually works, the readiness each change is built for, and how a working change gets embedded - are the ones that decide whether the plan changes anything or stays on the page. So we design them together, as a set.
The eight follow the established design-phase model in organisation development, so the plan covers what an effective intervention set should - changes that fit the organisation, are grounded in why they work, are sequenced and owned, and transfer capability to your people. We use the frameworks to make sure the design is complete, not as a model to run at you.
How it works
The method produces one thing: an intervention set your organisation can act on. It works by designing the changes with your people rather than presenting them a plan. Your organisation already holds most of the knowledge about how it really runs, so our job is to draw that out, combine it with the outside frameworks and pattern-recognition you bring us in for, and shape the two into a design that is both expert and genuinely owned. It works in four modes.
- We start from the diagnosis and the reason each change will work - Before anything is designed, we ground the work in valid information about the organisation and state the causal logic - for each intervention, why this change is expected to produce this result. A change with no theory of why it works is a red flag we design out from the start.
- We design with the people who run the work - The people doing the work know where the organisation bends and breaks in ways no diagnosis fully shows. We build with them, turning that knowledge into design choices - so each intervention fits how the organisation actually works, and is owned by the people who will carry it.
- We bring the outside insight and the frameworks - An inside view on its own tends to design around today's habits, so we bring the outside pattern - what makes interventions like these work - and frameworks that check the set is complete and the parts line up before you commit.
- We leave the capability behind - Throughout, we work so your people learn to design, not just watch us design. By the end you have an intervention set and a sharper sense of how the choices were made, so the next intervention is one you can shape yourselves.
The thinking behind the method
We design with your people rather than deliver to them because of a standard in the field: an effective intervention has to fit the organisation, be grounded in why it works, and leave your people more able to manage the next change. Those three are only met by building the design together. A plan handed down meets none of them well - it fits an outside picture of the organisation, carries the consultant's reasons rather than shared ones, and leaves no capability behind.
So co-design gives you an intervention set that is both right and real. The knowledge inside the organisation makes it grounded; designing it together makes it owned; and the outside frameworks keep the two from simply reinforcing what was already there. Get all three and the changes take hold. Miss one and you get an expert plan that gets rejected, an owned plan that stays parochial, or a clever plan that no one carries.
What you get
By the end, you have four things:
- The intervention set itself - a sequenced, staged plan of specific named changes, each carrying the reason it will work, the level it works at, its owner and its measures, specific enough to put into practice.
- A staged roadmap and institutionalisation path - the order the interventions land in, what each rests on, and how a working change gets embedded so it holds after the effort ends.
- A design that is genuinely yours - built with your people, grounded in how you actually run, so it is owned and carried rather than filed.
- The capability left behind - your people come out more able to design, so the next intervention is one you can shape yourselves.
The best intervention set is both expert and owned, and those pull against each other: expertise wants to hand you the answer, ownership wants you to reach it yourselves. Holding both at once is the craft of the work.
How we hand it over - and what happens next
The point of the work is an intervention set your organisation can act on, so we take care with how it lands. Because your people helped design it, the handover confirms something they already understand rather than revealing it cold. We walk through the finished set and the staged roadmap - why each change is shaped the way it is, what it settles, what it deliberately leaves open, and what the first moves are.
From there, some organisations take the plan and run the interventions themselves, now more able to. Others bring us alongside for the harder work of putting the changes into practice, which is where implementation picks up. The design has done its job when you can see the changes clearly, believe in them because you built them, and know the first steps to make them real.
Where this sits
Development intervention design is the second step in how we approach organisational development. It follows the Organisational Development Diagnostic, which reads the organisation as it is today, and leads into implementation, which puts the designed changes into practice. It also stands on its own - if you already know what needs to change and want the intervention set designed properly and owned, this is where to start.
Common questions
Is this just a set of workshops?
No - what you get is a designed intervention set, with a staged roadmap to put it into practice. We work with your people in the room, because that is how the design becomes both grounded and owned, and the sessions are the means to that. You walk away with the worked-out plan itself - named changes, each with the reason it will work - shaped by your people and ready to run.
What exactly is an intervention set?
It is a sequenced, planned set of the specific changes you will make to increase the organisation's effectiveness - the practices, structures, rituals and ways of working that actually change. Each intervention carries the reason it will work, the level it works at, its owner and sponsor, the readiness it is built for, and how progress is measured, plus how a working change gets embedded. Designing it as a set, rather than one change at a time, is what keeps the parts from pulling against each other.
How is this different from the Organisational Development Diagnostic?
The diagnostic reads the organisation as it is now - what is working, what is getting in the way, and why. Development intervention design is the next step: it designs the specific changes to make instead. The diagnostic answers 'what needs to change'; this answers 'what to do about it'. Many clients do the diagnostic first, because designing on a clear read of the organisation sets the design up well, but if you already have that clarity, you can start here.
Does this cover changes to our systems and technology?
At the level the intervention set needs. Where a change touches systems, technology or investment, we design it at the principles level - what the change asks of your systems and how it is owned - with the technology, data and finance leads who own those. We design the interventions and how your people run them, not the IT build or the financial model, so the deep technical work is shaped alongside the specialists who own it and the plan stays coherent and yours.
Why build it with our people rather than design it for us?
Because an intervention only works if it is carried. People take on changes they helped design far more readily than changes handed to them, and your people hold knowledge about how the organisation really runs that no outside team can fully see. Building it together also transfers the capability to design, so your people are more able to run and extend the plan. Co-design combines that inside knowledge with our outside frameworks, so the set is both right and real.
What happens after the design is done?
You have an intervention set and a staged roadmap, ready to put into practice. Some organisations run the interventions themselves, now more able to. Others bring us alongside for the harder work of making the changes real, which is what implementation covers. And because we leave the capability behind, you can keep spotting and designing the next intervention yourselves as the organisation changes.
Ready to design your intervention set?
Tell us what is prompting the change and what you are trying to achieve, and we will talk through what a development intervention design would look like for you - and whether a diagnostic first would set it up well. If you already know where you stand, we can go straight to designing the interventions, built with your people so the plan is genuinely yours.