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Free 2026 London Planning Report — Rear Extension Drawings in Barking IG11

Kitchen extension interior in a Barking IG11 terraced home, Barking and Dagenham
Barking · IG11 · Barking & Dagenham

Rear Extension Drawings in Barking IG11

Fixed-fee, MCIAT-chartered rear extension drawings for Barking (IG11) homeowners — London Borough of Barking and Dagenham validation and local constraints handled from the start.

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Barking (IG11) mixes a medieval abbey-and-town-centre core with Victorian, Edwardian and interwar housing, so extension and loft work here depends heavily on how close a property sits to the historic centre and the river.

Two conservation areas — Abbey and Barking Town Centre and Abbey Road Riverside — plus the borough-wide 2022 Article 4 on upward extensions mean we check the boundary and Article 4 position before advising permitted development versus a full application.

Kitchen extension interior in a Barking IG11 terraced home, Barking and Dagenham
Isometric illustration of a Barking IG11 home rear extension drawings design
Proposed floor plan
Barking IG11

Planning in Barking (IG11): what to know before you apply

Rear extensions and loft conversions across suburban IG11 are often achievable, but the borough-wide 2022 Article 4 means any added-storey scheme needs planning permission, and properties inside the Abbey town-centre or Abbey Road Riverside conservation areas face tighter heritage control near the abbey and church.

Typical Barking housing stock

IG11 ranges from the historic Barking Abbey and town-centre core through Victorian and Edwardian terraces to interwar semis and later suburban housing spreading out from the town centre.

Streets we regularly draw for in Barking

Abbey Road · East Street · North Street · Linton Road

Rear Extension Drawings for Barking (IG11) homes: the package and the process

Every rear extension drawings we prepare for an Barking property is drawn to London Borough of Barking and Dagenham’s validation standards and tuned to the IG11 constraints above. Here is what the drawing package covers and how the process runs from first survey to approval.

A single-storey rear extension is the most common way London homeowners add space, usually taking the form of an open-plan kitchen-diner that opens onto the garden through bi-fold or sliding doors, with rooflights or a roof lantern bringing daylight deep into the plan. Because depth and height are tightly controlled by permitted development rules and by the 45-degree rule that protects neighbouring windows, the design work sits as much in checking what the council will allow as in drawing what you want.

DrawingsDirect draws rear extensions for permitted development, the larger home extension prior-approval scheme and full householder planning, with structural calculations for the opening and roof produced in-house by our MCIAT-chartered team. If your project also involves widening the kitchen sideways or adding a second storey, see our Side Return, Wraparound and Double Storey Extension pages — many London rear extensions grow into one of those during design.

Do I need planning permission for a rear extension in London?

Many single-storey rear extensions qualify as permitted development, meaning no planning application is needed, provided depth, height and materials stay within set limits. That changes if your property sits in a conservation area or is subject to an Article 4 direction, both of which can remove permitted development rights across a street or borough — in that case a full householder planning application is required regardless of size.

Even where an extension qualifies, most homeowners obtain a Lawful Development Certificate to confirm that status in writing before building — useful for mortgage lenders, buyers and Building Control. We check your property against your borough's constraints before recommending a route.

How deep can a single-storey rear extension go?

Depth is the main constraint on a rear extension, and it depends on your house type and whether you use standard permitted development or the larger home extension scheme.

Permitted development

Standard permitted development allows a single-storey rear extension up to 3 metres deep for terraced and semi-detached houses, or 4 metres for detached houses, generally with eaves height limited to match or stay close to the existing house.

Larger home extension scheme

The prior-approval scheme extends this to 6 metres for terraced and semi-detached houses and 8 metres for detached houses. Your council writes to affected neighbours; if none object within the notification period, approval follows without a full planning application. If an objection is raised, the council assesses the impact on neighbouring light and outlook itself, rather than automatically refusing, so a well-considered design still has a good chance of approval.

Rear extension routes at a glance
RouteWhen it appliesTypical fee
Permitted development (Lawful Development Certificate)Depth within 3m (terraced/semi) or 4m (detached), height and materials within PD limitsPD/LDC pack ~£950–£1,450
Larger home extension (prior approval)Depth up to 6m (terraced/semi) or 8m (detached), with neighbour notificationfrom £1,100
Full householder planning permissionExtension exceeds PD/larger-home limits, or the property is in a conservation area with an Article 4 directionFull Planning pack ~£1,600–£2,400
Planning + Building Regulations (structural)Combined planning and construction-ready pack with structural calculations for the opening and roofPlanning + Building Regs pack ~£2,200–£3,850

Also in Barking IG11

Planning PermissionPlanning DrawingsArchitectural DrawingsBuilding Regulations DrawingsLoft Conversion DrawingsRear Extension Drawings across Barking & DagenhamRear Extension Drawings across London
FAQ

Rear Extension Drawings in Barking IG11 — FAQs

How much does a rear extension cost to design in London?+
Rear extension drawings start from £1,100, with the final fee set by the route your extension takes — permitted development, prior approval or full planning — and whether you need building regulations and structural calculations bundled in. The fee is fixed and agreed upfront.
Do I need an architect for a rear extension?+
No. DrawingsDirect is an MCIAT-chartered architectural technologist practice, producing the same council-accepted drawings as an architect for a fixed fee typically around 30% lower.
How long does it take to get rear extension drawings?+
Drawings are typically ready around 7 days from survey. Once submitted, councils have a statutory 8-week period to determine a standard householder planning application.
What is the 45-degree rule?+
It is a daylight test many London councils apply to check that a rear extension does not block too much light to a neighbour's nearest window, measured as a line drawn at 45 degrees from that window. We check it before submission, not after a refusal.
Will I need a Party Wall Agreement for a rear extension?+
Only if your foundations or new walls sit on or near the boundary with a neighbouring property. A straightforward rear extension set within your own plot often does not trigger the Party Wall etc. Act 1996, unlike a Side Return or Wraparound extension, which usually does.
Do I need planning permission for an extension in Barking & Dagenham?+
On the Becontree Estate's interwar semis and the Victorian terraces around Barking, many single-storey rear extensions and lofts can fall within permitted development, so a full application isn't always needed. Conservation areas such as Barking Town Centre and Chadwell Heath restrict this. We check your address first and can confirm permitted development with a Lawful Development Certificate where it qualifies.
What does the council expect for an extension on the Becontree Estate?+
The Becontree Estate has a consistent interwar cottage-style character the council expects extensions to respect — matching the building line, roof form and materials of the street. We design to that established pattern rather than imposing a standard template, which is what carries applications to consent on the estate.
What does the borough-wide HMO Article 4 direction affect?+
Barking & Dagenham applies a borough-wide Article 4 direction removing permitted development rights for change of use to an HMO (C3 to C4), so a conversion to a house in multiple occupation needs a full application anywhere in the borough. It doesn't affect a standard family extension or loft, but we confirm whether it applies to your intended use before advising.
How long does Barking & Dagenham Council take to decide?+
The council determines most householder applications within the statutory eight-week period once validated; conservation cases can attract additional consultation. The commonest delay is a validation query, so we prepare submissions to the council's checklist with correctly scaled existing and proposed drawings and a location plan.
How much do planning drawings cost in Barking & Dagenham?+
We agree a fixed fee before starting, usually around 30% below an architect's fee for the same council-accepted drawings, with free redraws until the council approves. A single-storey rear, a loft and a conservation-area application differ in complexity, so we quote once we understand your street and project rather than by the hour.
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