Whole-Life SuDS Maintenance • CIRIA C753 • Condition Discharge

SuDS Management & Maintenance Plans Whole-Life Maintenance to Discharge Your Condition

Planning condition requiring a SuDS maintenance plan? We prepare component-by-component management and maintenance plans — inspection schedules, frequencies, responsibilities and whole-life arrangements — written to discharge the condition.

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Component maintenance schedules
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Responsibility & adoption
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Inspection frequencies
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CIRIA C753 / Defra
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Condition discharge

SuDS Management & Maintenance Plans

A drainage strategy only gains approval if the SuDS can be shown to work for the lifetime of the development — so most LLFAs impose a condition requiring a SuDS Management and Maintenance Plan. It sets out how each drainage component is inspected and maintained, how often, who is responsible, and how that responsibility is funded and carried through after the developer has left.

We prepare a clear, component-by-component plan covering every element of your scheme — permeable paving, geocellular storage, basins, swales, filters and flow controls — with routine, occasional and remedial maintenance tasks, frequencies, and a whole-life schedule. We set out the management arrangement, whether that is private ownership, a management company, or adoption, so the LLFA can discharge the condition.

What’s Included

  • ✓ Component-by-component schedule — every SuDS element with its specific maintenance tasks
  • ✓ Inspection & maintenance frequencies — routine, occasional and remedial actions over the design life
  • ✓ Responsibility & ownership — who maintains what, and how it is funded and transferred
  • ✓ Adoption position — private management company, homeowner or adoption under a S104 agreement
  • ✓ Access for maintenance — confirmation that components can be reached and maintained
  • ✓ Plans & whole-life costing — a maintenance plan drawing and indicative whole-life schedule where required
Rain garden green infrastructure Aerial view of green drainage Watercourse and SuDS features

When Is a Maintenance Plan Required?

Need one to discharge a condition? Send us your approved drainage scheme.

SuDS Maintenance Condition

The most common trigger — a condition requiring the management and maintenance regime to be approved, usually before occupation.

Major Developments

Schemes of 10+ dwellings or 0.5ha+ almost always require a maintenance plan as part of the drainage approval.

Adoption & Handover

Where SuDS pass to a management company or are offered for adoption, a clear maintenance plan is essential to the handover.

Part of a Drainage Strategy

We can include the plan within a full SuDS drainage strategy or provide it standalone.

Discharging Other Conditions

Often bundled with the detailed drainage condition discharge — we handle both together.

Retrofit & Existing SuDS

Maintenance plans for existing or retrofit SuDS where management responsibility needs to be formalised.

What a SuDS Maintenance & Management Plan Must Cover

The document that keeps a drainage system working for the life of the development.

Sustainable drainage only protects against flooding if it is maintained. Planning conditions and s.106 agreements increasingly require a SuDS Maintenance & Management Plan that sets out who will look after every component, how often, and how it will be funded — following the maintenance guidance in CIRIA C753 (The SuDS Manual). A vague plan is one of the most common reasons an LLFA refuses to discharge a drainage condition.

Component-by-component schedules

Inspection and maintenance tasks for each SuDS feature — permeable paving, swales, filter strips, attenuation tanks, flow controls, basins and ponds — with frequencies for routine, occasional and remedial work.

Responsibility & funding

Who maintains the system for the lifetime of the development — typically a management company funded by a service charge on each property — and the records to be kept, so the LLFA can see the commitment is real.

Adoption & handover

Whether any element will be adopted (by the sewerage undertaker under a s.104 agreement, or by the highway authority), and the arrangements for everything that remains private.

Frequently Asked Questions

What is a SuDS management and maintenance plan?
It’s a document setting out how every sustainable drainage component on a site will be inspected and maintained over its lifetime, how often, and who is responsible — so the system keeps performing as designed.
Who is responsible for maintaining SuDS?
It varies: a private homeowner, a residents’ management company, the developer, or a body that adopts the system. The plan makes the responsibility, funding and transfer explicit, which is what the LLFA wants to see.
What’s the difference between private management and adoption?
Privately managed SuDS are maintained by the owner or a management company; adopted SuDS pass to a water company (via a S104 agreement) or other adopting body. Each route has different evidence requirements, which we address.
Can you produce it from my existing drainage design?
Yes — if your drainage scheme is already approved, we can prepare the maintenance plan to discharge the related condition without redoing the design.
How much does it cost?
A modest fixed fee as a standalone document, or it can be folded into a wider drainage strategy or condition discharge. We’ll quote within 24 hours.
Who is responsible for maintaining SuDS on a new development?
Unless a component is formally adopted by a water company or highway authority, the developer must set up a lasting private arrangement — most commonly a management company funded by a service charge on each dwelling. The plan names the party, the tasks and the funding so the LLFA can secure it by condition or s.106.
When is a SuDS maintenance plan required?
Usually as part of discharging the surface water drainage condition on a planning permission, or as a requirement of a s.106 agreement. Most LLFAs will not sign off a drainage scheme without a credible maintenance plan behind it.
What does the plan actually contain?
A description of each SuDS component and its function, an inspection and maintenance schedule (routine, occasional, remedial) following CIRIA C753, the responsible party and funding mechanism, access arrangements, and a record-keeping regime. We tailor it to the specific scheme rather than issuing a generic template.

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Free, no-obligation fixed-fee quote within 24 hours. All flood zones and LLFAs covered across England and Wales.

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