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Free 2026 London Planning Report — Rear Extension Drawings in Gidea Park RM2

Rear garden extension behind a detached Gidea Park garden-suburb house in Havering RM2
Gidea Park · RM2 · Havering

Rear Extension Drawings in Gidea Park RM2

Fixed-fee, MCIAT-chartered rear extension drawings for Gidea Park (RM2) homeowners — London Borough of Havering validation and local constraints handled from the start.

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Gidea Park (RM2) is one of Havering's most tightly protected neighbourhoods — a designated garden suburb of detached architect-designed houses where the Gidea Park Conservation Area carries a confirmed Article 4 direction. That direction removes the permitted development rights most homeowners rely on, so alterations here almost always need a formal application.

Because the estate's character rests on generous plots, deep gardens and consistent building lines, Havering scrutinises anything that disrupts that rhythm. We prepare drawings to the conservation-area appraisal and the Article 4 control levels so extensions, dormers and even window or boundary changes are presented in a form the borough will accept.

Rear garden extension behind a detached Gidea Park garden-suburb house in Havering RM2
Isometric illustration of a Gidea Park RM2 home rear extension drawings design
Proposed floor plan
Gidea Park RM2

Planning in Gidea Park (RM2): what to know before you apply

Unlike most of Havering, Gidea Park has a confirmed Article 4 direction (Art4/4/2015) covering the whole conservation area, so permitted development rights are withdrawn under Control Level 1 or 2. Assume nearly all external householder work needs express planning consent and design that respects the garden-suburb layout.

Typical Gidea Park housing stock

Almost entirely detached houses on generous plots, many by named Arts-and-Crafts-era architects from the 1910-11 exhibition estates, set on wide tree-lined roads with deep front gardens and mature planting.

Streets we regularly draw for in Gidea Park

Reed Pond Walk · Meadway · Heath Drive · Balgores Lane

Rear Extension Drawings for Gidea Park (RM2) homes: the package and the process

Every rear extension drawings we prepare for an Gidea Park property is drawn to London Borough of Havering’s validation standards and tuned to the RM2 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 Gidea Park RM2

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FAQ

Rear Extension Drawings in Gidea Park RM2 — 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 Havering?+
Havering has no borough-wide Article 4 direction affecting typical householder permitted development, so its detached and semi-detached homes often keep fuller rights than inner-London terraces — larger rear and single-storey extensions can qualify. Green-belt land toward the east and conservation areas such as Upminster and Emerson Park restrict this. We check your address first and can confirm permitted development with a Lawful Development Certificate.
How does green-belt land affect my Havering project?+
On green-belt properties toward the borough's eastern and northern edges, extensions are assessed against strict limits on disproportionate additions to the original dwelling. It does not rule out an extension, but scale and siting matter and the case must be evidenced carefully. We confirm whether your property is green belt and design a scheme that stays within policy.
Can I build a bigger extension because Havering plots are larger?+
Often, yes. The generous interwar and detached plots across Hornchurch, Emerson Park and Upminster make substantial rear and double-storey extensions viable where a tight terrace could not. The limit is usually policy rather than space. We design to use the plot fully within permitted-development allowances or a well-evidenced full application.
How long does Havering Council take to decide?+
Havering determines most householder applications within the statutory eight-week period once validated; green-belt and conservation cases can involve additional consultation. A complete, correctly scaled submission is the best way to avoid a validation query — we prepare Havering drawings to the council's checklist to keep the application on track.
How much do planning drawings cost in Havering?+
We quote a fixed fee upfront, typically around 30% below an architect's charge for the same council-accepted drawings, with free redraws until Havering approves. Because plots here allow larger schemes, the fee tracks complexity — a single-storey rear differs from a double-storey or a green-belt case — and we confirm it once we understand your plans.
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