Green Infrastructure Plan or Landscape Strategy

A green infrastructure plan and a landscape strategy answer two different questions, and councils ask for them at different points. The green infrastructure plan is about the network: how green and blue spaces on your site connect to what is around it, what functions they perform, and how the scheme meets a greening policy target. The landscape strategy is about the ground: what gets planted where, at what size, in what soil, and who looks after it for the next five years. On a major application you will often need both, and the fastest way to waste a fee is to commission them separately from people who never speak to each other.

What each document sets out

The distinction is easier to hold if you look at the contents lists side by side.

A green infrastructure plan is a policy-facing document. A landscape strategy is a delivery document. One persuades the officer that the scheme performs. The other tells the contractor what to build and the council what to enforce.

Network scale against site scale

Green infrastructure policy is about connectivity. A line of street trees matters because it links a park to a river corridor, not because it looks pleasant outside the marketing suite. So the plan has to look beyond the red line, usually to a radius that captures the nearest open space, watercourse and priority habitat, and say what the scheme adds to that wider pattern.

That outward view is what officers check first. A plan that maps only the application site, then claims a contribution to a borough-wide network, gets a consultation response asking for the evidence.

The landscape strategy works the other way. It starts at the boundary and gets progressively more detailed, down to the specification of a tree pit or the depth of substrate on a biodiverse roof. It rarely says anything about the next street, and it should not have to.

The policies that ask for each

National policy expects development to provide net gains for biodiversity and to include trees and green features in new streets, with the Planning Practice Guidance on the natural environment setting out how green infrastructure evidence is expected to work. Beyond that the requirements are local, and they vary more than most other topics.

In London the ask is explicit. The London Plan sets an urban greening factor with target scores of 0.4 for predominantly residential development and 0.3 for predominantly commercial development, alongside policies on trees, biodiversity and green infrastructure generally. A scheme that misses the target has to explain itself. Our note on how the urban greening factor score is calculated walks through the surface cover factors and where schemes lose points.

Outside London the trigger is usually a local plan policy on green infrastructure networks, a canopy cover target, or an SPD on landscape design. Councils that have adopted a canopy cover target will want the existing and proposed percentages stated, which puts the tree survey and the landscape strategy on the same critical path.

Landscape strategies are asked for on almost any application involving new external space, and they are a validation requirement on most majors.

Where the two overlap with biodiversity net gain

Mandatory biodiversity net gain under the Environment Act 2021 has changed the relationship between these documents. The statutory metric measures habitat area, type, condition and connectivity. The habitats you claim in the metric have to be the habitats drawn on the landscape plan, described in the planting schedule, and maintained under the management plan for 30 years.

Where it goes wrong is depressingly predictable. The ecologist models a species-rich grassland in moderate condition. The landscape architect draws amenity lawn with a wildflower fringe. The metric then overstates the gain, the council's ecologist spots it at consultation, and the scheme loses weeks.

So the sequence matters. Fix the habitat types with the ecologist first, have the landscape strategy draw exactly those habitats, and let the green infrastructure plan describe the network effect that results. Doing it in the other order means redrawing everything.

A biodiverse roof is the clearest case of a feature that earns its place in all three documents at once, and combining it with photovoltaics raises design questions we cover in the piece on biosolar roofs.

Management and maintenance commitments

This is where landscape strategies are weakest and where councils have learned to push hardest.

A planting plan without an aftercare regime tells the council nothing about whether the trees will be alive in year three. A landscape strategy submitted with an application should state the establishment period, the watering regime in the first two growing seasons, the replacement standard for failures, the cutting regime for any grassland, and who carries the obligation once the developer has gone.

For biodiversity net gain the bar is higher again. A habitat management and monitoring plan has to run for 30 years and be secured by condition, planning obligation or a conservation covenant. That obligation usually sits with a management company on a flatted scheme, and the funding mechanism should be named in the submission rather than left to the section 106 negotiation.

Green infrastructure plans carry lighter maintenance content, but they should still say who maintains the network elements that sit outside private curtilage.

How conditions secure each document

On an outline permission, landscaping is one of the five reserved matters, so the landscape strategy arrives with the reserved matters submission rather than at outline stage. On a full application the usual pattern is a condition requiring full details of hard and soft landscaping before above-ground works, a second condition requiring implementation in the first planting season after occupation, and a third requiring replacement of anything that dies within five years.

Green infrastructure plans tend to be secured differently. Where a policy target such as an urban greening factor applies, the condition is often framed around achieving the stated score, with the calculation and supporting drawings to be approved. That makes the arithmetic in the submitted plan enforceable, which is a good reason to be conservative with it.

Watch the pre-commencement wording. A landscaping condition drafted as pre-commencement rather than pre-superstructure can stall a site for no good reason, and it is worth negotiating before the decision is issued.

Preparing both without duplicating work

1. Commission the tree survey and the preliminary ecological appraisal first, because both documents depend on what is retained.
2. Agree habitat types and target condition with the ecologist before any planting is drawn.
3. Draw the landscape strategy once, then extract the areas and surface types into the greening calculation rather than measuring twice.
4. Write the maintenance regime once and cross-reference it from the green infrastructure plan, the metric evidence and the management plan.
5. Check every number appears identically in all three documents. Officers do check.

One honest caveat: on smaller schemes in authorities with no greening policy, a separate green infrastructure plan adds little, and a well-written landscape strategy with a short section on network context will do the job. Ask the case officer at pre-application rather than assuming.

To see how these two documents sit alongside the rest of a major application pack, and to draft either as a starting point for your landscape consultant, browse the report types by category.

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