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Free 2026 London Planning ReportDouble Storey Extension Drawings in Beddington CR0

Single-storey rear extension onto a garden behind an interwar semi-detached house in Beddington CR0, Sutton
Beddington · CR0 · Sutton

Double Storey Extension Drawings in Beddington CR0

Fixed-fee, MCIAT-chartered double storey extension drawings for Beddington (CR0) homeowners — London Borough of Sutton validation and local constraints handled from the start.

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Beddington (CR0) centres on a historic village core — Carew Manor and Beddington Park with its medieval church — that was surrounded by interwar suburban housing as south London expanded. Importantly, it lies within the London Borough of Sutton despite sharing the CR0 postcode with Croydon, so householder work here is governed by Sutton's controls. Most projects are extensions or lofts on the interwar semi-detached and terraced houses that ring the old village.

There is no conservation area covering the Beddington part of CR0 — that is a genuine, verified fact, not an omission. Its planning character is instead shaped by the contrast between the historic village nucleus and the surrounding interwar suburban streets, and by the London Borough of Sutton's householder design expectations, which lean on keeping original building lines, materials and roof forms intact. We treat that layered character, rather than a conservation designation, as the reference point when we design an extension.

Demand for rear extensions, side infills and loft conversions runs steadily across roads like Queenswood Avenue, Royston Avenue and Rookwood Avenue, where interwar houses sit on regular planned plots. We check each property's permitted-development position against Sutton's borough-wide controls first — and, for homes toward the Wandle, any surface-water drainage implications — then prepare drawings that either stay within permitted development or are ready to validate as a full householder application.

Single-storey rear extension onto a garden behind an interwar semi-detached house in Beddington CR0, Sutton
Isometric illustration of a Beddington CR0 home double storey extension drawings design
Proposed floor plan
Beddington CR0

Planning in Beddington (CR0): what to know before you apply

Beddington sits within the London Borough of Sutton despite its CR0 postcode, so householder applications are validated and assessed by Sutton against the prevailing character of the interwar streets that ring the historic village. There is no conservation area and no local Article 4 direction in the Beddington part of CR0, so many houses retain permitted development rights for rear and loft work — but modest interwar plots, shared building lines and low-lying ground toward the Wandle mean depth, height, neighbour impact and drainage are the points a scheme is judged on.

Typical Beddington housing stock

A historic village nucleus surrounded by predominantly interwar semi-detached and terraced houses, with postwar and modern infill toward the Wandle. It is this interwar suburban ring, on regular planned plots, that drives most of the rear-extension, side-infill and loft-conversion work across the area.

Streets we regularly draw for in Beddington

Church Lane · Guy Road · Sandhills · Queen Elizabeth's Walk · Queenswood Avenue · Iberian Avenue · Royston Avenue · Goidel Close · Rookwood Avenue · Ferrers Avenue · Raleigh Avenue · Green Leaf Avenue

Double Storey Extension Drawings for Beddington (CR0) homes: the package and the process

Every double storey extension drawings we prepare for an Beddington property is drawn to London Borough of Sutton’s validation standards and tuned to the CR0 constraints above. Here is what the drawing package covers and how the process runs from first survey to approval.

A double storey extension builds a second floor above a single-storey side or rear addition, typically adding a bedroom and bathroom upstairs over a widened kitchen or reception room below. Because the foundations and roof of a single-storey extension already carry most of the fixed cost of building, adding a floor on top is often the most cost-effective way to gain two rooms rather than two separate projects. The trade-off is scrutiny: a two-storey addition sits closer to eye level with neighbouring windows and gardens, so councils examine massing, roofline and boundary distance more closely than they would a single-storey extension.

DrawingsDirect draws double storey side and rear extensions for full planning and building regulations, with structural calculations for the additional floor load and foundations produced in-house by our MCIAT-chartered team, on a fixed fee. If a single storey is enough, see our Rear Extension and Side Return Extension pages, or combine both with a Wraparound if you are extending sideways as well as up.

Do I need planning permission for a double storey extension in London?

Almost always. Permitted development rights for two-storey extensions are far more restrictive than for single-storey work, particularly on how close the new structure can come to a boundary and how closely its roof pitch and eaves height must match the existing house, so most double storey projects are drawn and submitted as full householder planning applications rather than relying on permitted development.

Where the property sits in a conservation area or is subject to an Article 4 direction, any remaining permitted development allowance for a second storey is typically removed entirely, reinforcing the need for a full application. We check your property's status and your borough's design guidance before drawing.

How do councils control the impact of a double storey extension on neighbours?

Because a second storey introduces new windows and massing at first-floor level, London boroughs apply design guidance aimed specifically at protecting neighbouring light, privacy and outlook.

  • The 45-degree rule, tested at neighbouring windows, to check the extension does not block an unreasonable amount of daylight
  • A common design expectation that a two-storey side extension is set in roughly 1 metre from the shared boundary, rather than built hard against it
  • A first floor commonly set back from the ground floor front elevation, so the upper storey reads as subordinate to the main house from the street
  • Obscure or high-level glazing on flank walls facing directly into a neighbour's garden or windows, to limit overlooking
Extending once vs twice: single versus double storey
OptionWhat it addsTypical fee
Single-storey rear extensionA ground-floor kitchen-diner only, may qualify for permitted developmentsee Rear Extension Drawings, from £1,100
Double storey side or rear extensionTwo rooms across two floors, usually needs full planningFull Planning pack ~£1,600–£2,400
Double storey + Building Regulations (structural)Combined pack including structural calculations for two-floor loads and foundationsPlanning + Building Regs pack ~£2,200–£3,850
Wraparound (rear + side return)Combines two single-storey extensions into one L-shaped ground floorsee Wraparound Extension Drawings, from £2,200
FAQ

Double Storey Extension Drawings in Beddington CR0 — FAQs

How much does a double storey extension cost to design in London?+
Double storey extension drawings start from £2,400, covering full planning permission and structural design for the additional floor. A combined planning and building regulations package with full structural calculations runs up to around £3,850, fixed and agreed upfront.
Do I need planning permission to add a second storey?+
In almost all cases, yes. Permitted development rights for two-storey extensions are much tighter than for single-storey work, particularly around boundary distance and roof matching, so we design double storey projects on the assumption a full householder planning application is required.
Will a double storey extension overlook my neighbour's garden?+
That is exactly what planning officers check, using the 45-degree daylight rule alongside boundary set-in and first-floor set-back guidance. Where a new flank window would look directly into a neighbour's garden, we typically specify obscure or high-level glazing to address it before submission rather than after an objection.
Do I need an architect for a double storey extension?+
No. DrawingsDirect is an MCIAT-chartered architectural technologist practice, producing the same council-accepted drawings and in-house structural coordination as an architect, for a fixed fee typically around 30% lower, with structural calculations for the additional floor produced by the same team rather than a separately appointed engineer.
How long does it take to get double storey extension drawings?+
Drawings are typically ready around 7 days from survey. A householder planning application then has a statutory 8-week determination period once submitted.
Do I need planning permission to extend a house in Beddington?+
Not always. Many Beddington houses retain permitted development rights, so a modest single-storey rear extension or a rear loft conversion can often proceed without a full planning application. Because Beddington sits in the London Borough of Sutton and the interwar plots are fairly modest, we check your property's size limits and building lines against Sutton's controls first — and any drainage points for homes toward the Wandle — and prepare a full householder application where the project goes beyond permitted development.
Is Beddington in a conservation area?+
No. There is no conservation area covering the Beddington part of CR0. Its planning character is shaped instead by the contrast between the historic village core and the surrounding interwar suburban streets, together with Sutton's householder design expectations, which favour keeping original building lines, materials and roof forms intact when you extend.
How much do planning and building-regulation drawings cost for a Beddington extension?+
We work to fixed fees agreed before we start, with a typical turnaround of around seven days for a standard rear extension or loft on a Beddington house. As a chartered architectural technologist practice we produce the same council-accepted planning and building-regulation drawings as an architect, usually for a lower fee, and include free redraws until your application is approved.
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