Double Storey Extension Drawings in Kingston
Fixed-fee, MCIAT-chartered double storey extension drawings for Kingston homeowners — Royal Borough of Kingston upon Thames validation and local constraints handled from the start.
Kingston upon Thames pairs the elegant Victorian and Edwardian villas and terraces of Surbiton and Norbiton with the interwar semi-detached suburbia that runs through New Malden, Chessington and Tolworth, and the substantial detached houses set across the Coombe hill and the riverside plots near the Thames. Rear extensions and loft conversions are the Royal Borough's most requested projects, and each of these house types calls for a slightly different approach on the drawing board.
Two local factors shape design here more than most. Riverside plots near Kingston and the river sit within the Thames flood zone, where the council expects flood-risk and finished-floor-level considerations to be addressed, and conservation-area control across Surbiton, Coombe, Norbiton, Old Malden and the Kingston town centre governs materials and external design. Kingston also applies Article 4 directions removing permitted development for HMO conversions in parts of the borough, so a change of use to a house in multiple occupation needs checking against your address. The interwar semis of New Malden and Chessington, by contrast, often retain fuller permitted development rights for rear extensions and lofts, and Coombe's larger detached plots can carry more substantial schemes within design policy.
We prepare Kingston planning drawings tuned to your specific house type — a Surbiton villa, a New Malden semi or a Coombe detached home — confirming permitted development eligibility first and evidencing flood-risk or conservation considerations where a riverside or designated site is involved. Because the Royal Borough determines most householder applications within the statutory eight-week period once validated, we work validation-first to avoid the drawing queries that cause most delays. The fee is fixed and agreed up front, drawings typically follow within about seven days, and we offer free redraws until the council approves — the same council-accepted drawings an architect would produce, usually at around 30% less.
Planning in Kingston: what to know before you apply
Kingston applies Article 4 directions to HMO conversions in parts of the borough and controls design within conservation areas such as Surbiton, Coombe and the town centre. Thames flood-zone considerations apply on riverside plots. The interwar semis of New Malden and Chessington often retain permitted development rights for rear extensions and lofts — we confirm before drawing.
Typical Kingston housing stock
Victorian and Edwardian villas and terraces around Surbiton and Norbiton, interwar semi-detached suburbia through New Malden, Chessington and Tolworth, and larger detached houses on the Coombe hill and riverside plots near the Thames.
Areas we regularly draw for in Kingston
Kingston · Surbiton · New Malden · Chessington · Norbiton · Coombe · Tolworth · Old Malden
What the numbers say about Kingston planning decisions
These are Royal Borough of Kingston upon Thames’s own reported figures, published by government rather than estimated by us. They are what we design against — a borough that refuses one householder application in five needs a different drawing package from one that refuses one in twenty.
Permitted development in Kingston
Larger householder extensions put to Royal Borough of Kingston upon Thames under the prior-approval route, and lawful-development certificates decided, over eight quarters.
| Prior approval not requiredWent ahead without a full application | 94 |
|---|---|
| Prior approval granted | 9 |
| Prior approval refused | 102 |
| Granted where a decision was neededFrom 111 determinations | 8% |
| Building upwards, prior approval refused | 0 |
| Certificates of lawful development decided | 584 |
Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-08-16.
What removes permitted development in Kingston
Live entries on the national planning registers for Royal Borough of Kingston upon Thames. Article 4 directions withdraw permitted development rights, so a project inside one needs a full application rather than prior approval. Revoked and expired entries are excluded.
| Article 4 directions in force | 3 |
|---|---|
| Areas they coverOne direction can cover many separate areas | 114 |
| Conservation areasPermitted development is already narrower inside one | 28 |
Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-08-16.
Double Storey Extension Drawings for Kingston homes: the package and the process
At first-floor level the drawings have to answer for daylight, privacy and massing. That means proposed elevations showing every new window with its position relative to the boundary, a section taken through the extension and the neighbouring building, and a roof form drawn to sit below the existing ridge rather than compete with it.
We draw the neighbouring property alongside your own, because the officer's assessment is comparative — the effect on their windows and outlook is the test. Setting the first floor in from the boundary, and showing that set-back as a dimension, resolves most objections before consultation begins.
At first floor the boundary relationship decides everything. A detached house has room to set the addition in on both sides; a semi has one shared wall and one clear flank; a mid-terrace can usually only go to the rear, where the effect on both neighbours has to be drawn.
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
Matching the roofline and materials
Planning officers assess a double storey extension heavily on how convincingly it reads as part of the original house rather than an addition bolted onto the side. Our drawings match ridge height, roof pitch, eaves detail and brick or render finish to the existing building wherever the design brief allows, which is consistently one of the strongest factors in securing approval without delay or redesign. Where a subtly contrasting material is proposed instead — a different brick tone, or a zinc or slate roof against a tiled original — we set it out clearly on the elevations so the design intent reads as deliberate rather than a mismatch, which is how most London boroughs prefer a genuine design statement to be presented.
| Option | What it adds | Typical fee |
|---|---|---|
| Single-storey rear extension | A ground-floor kitchen-diner only, may qualify for permitted development | see Rear Extension Drawings, from £1,100 |
| Double storey side or rear extension | Two rooms across two floors, usually needs full planning | Full Planning pack ~£1,600–£2,400 |
| Double storey + Building Regulations (structural) | Combined pack including structural calculations for two-floor loads and foundations | Planning + Building Regs pack ~£2,200–£3,850 |
| Wraparound (rear + side return) | Combines two single-storey extensions into one L-shaped ground floor | see Wraparound Extension Drawings, from £2,200 |
Double Storey Extension Drawings across Kingston
Double Storey Extension Drawings in Kingston — FAQs
How much does a double storey extension cost to design in London?+
Do I need planning permission to add a second storey?+
Will a double storey extension overlook my neighbour's garden?+
Do I need an architect for a double storey extension?+
How long does it take to get double storey extension drawings?+
Do I need planning permission for an extension in Kingston?+
My Kingston home is near the river — does flood risk affect my plans?+
Can I build a larger extension on a Coombe plot?+
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