
Change of Use Drawings in Purley CR8
Fixed-fee, MCIAT-chartered change of use drawings for Purley (CR8) homeowners — Croydon Council validation and local constraints handled from the start.
Purley (CR8) reaches west into Kenley and Woodcote, where William Webb laid out his garden suburb of the Webb Estate and Upper Woodcote Village between the 1900s and the 1920s on generous, tree-lined plots.
Both conservation areas — Upper Woodcote Village designated in 1973 and the Webb Estate in 1983, each extended in 2007 — protect Arts and Crafts houses, mature trees and open front gardens, so we design CR8 schemes to that grain.


Planning in Purley (CR8): what to know before you apply
CR8's Webb Estate and Upper Woodcote Village conservation areas closely control the garden-suburb character — individually designed houses, deep tree-lined plots and open front boundaries — so extensions, roof changes and boundary works are assessed against that grain even where householder permitted development survives. Croydon's borough-wide Article 4 direction still removes permitted development for small C3-to-C4 HMO conversions across the district.
Typical Purley housing stock
Individually designed Arts and Crafts, Tudor Revival and Neo-Georgian houses on William Webb's garden-suburb estate west of Purley town centre, set on generous tree-lined plots, with Victorian, Edwardian and interwar housing across the wider Purley and Kenley streets.
Streets we regularly draw for in Purley
Rose Walk · Silver Lane · Foxley Lane · Woodcote Valley Road
Change of Use Drawings for Purley (CR8) homes: the package and the process
Every change of use drawings we prepare for an Purley property is drawn to Croydon Council’s validation standards and tuned to the CR8 constraints above. Here is what the drawing package covers and how the process runs from first survey to approval.
A change of use — converting a house into flats, a shop into a flat, or adding a lodger room that tips a home into a small HMO — is governed by the Use Classes Order, which groups land and buildings into classes such as C3 (dwellinghouses), C4 (small shared houses) and E (commercial, business and service uses), plus a handful of uses that sit outside any class, known as sui generis. Whether you need a full planning application, a prior-approval notification, or nothing at all depends on which classes the 'before' and 'after' uses fall into, and whether your permitted development rights have been restricted locally.
DrawingsDirect prepares the drawings and supporting information a London borough needs to assess a change of use — existing and proposed floor plans, a use and amenity statement, and where relevant a parking and refuse strategy — and advises which route applies before you commit to an application. We cover conversions into flats, commercial-to-residential schemes under the prior-approval Class MA route, and other changes of use across all 33 London boroughs.
What counts as a material change of use?
Not every change in how a building is used needs planning permission — only a 'material' change, one significant enough to affect the character of the use of the land. Converting a single dwellinghouse into two or more flats is always material. Adding paying lodgers within a single household usually is not, until the household tips over into a small House in Multiple Occupation. We assess whether your proposed change crosses that threshold before recommending a route.
The Use Classes Order: C3, C4, E and sui generis
The Use Classes Order groups uses so planners, and permitted development rules, can treat similar activities consistently.
C3 — Dwellinghouses
The class covering a single household living as a single unit, including up to two people living together as a single household who are not related. Most family homes and self-contained flats fall here.
C4 — Houses in multiple occupation (small)
Covers a shared house or flat occupied by three to six unrelated people sharing basic amenities such as a kitchen or bathroom. Moving from C3 to C4 is a change of use, though it is often permitted development unless your borough has removed that right.
Class E — Commercial, business and service
A wide class combining shops, offices, gyms, cafes and other business uses that can change between each other without planning permission, but changing from Class E to residential use is a material change requiring the prior-approval or full planning route.
Sui generis
Uses that do not fit any class, including large HMOs of seven or more unrelated occupants, betting shops and drinking establishments. A change of use to or from a sui generis use normally needs planning permission.
| Route | When it applies | Typical package | Fee from |
|---|---|---|---|
| Prior approval (Class MA) | Class E commercial to residential, meeting the criteria | Prior-approval drawings and statement | £1,200 |
| Full planning permission | Conversion into flats, HMO or use outside prior approval | Planning + building regs | £1,600–£2,400 |
| No application needed | Use falls within an existing permitted class change | Drawings for record purposes only | £450 |
Change of Use Drawings in Purley CR8 — FAQs
How much do change of use drawings cost in London?+
What is the difference between a material change of use and general permitted development?+
How long does a change of use application take to be decided?+
Do I need an architect for a change of use application?+
Will converting my house into flats need building regulations approval too?+
Do I need planning permission for an extension in Croydon?+
Can I build a larger extension on a Purley or Sanderstead plot?+
What do Croydon's HMO Article 4 directions mean for me?+
How long does Croydon Council take to decide?+
How much do planning drawings cost in Croydon?+
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