Double storey extension drawings for Worcester Park homes
If you are weighing up a property extension in Worcester Park, a double storey one needs drawings that show both floors and the structure that carries them. Our fixed fee for double storey extension planning drawings starts at £995 with no VAT to add, as published on our price list; the engineer's calculations for that structure are a separate fee.
Fixed fee from £795 drawings + £200 survey (£995 total) · all prices
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What a double storey extension costs us to draw
The starting fee for double storey extension planning drawings is £995 with no VAT to add. It is the figure on our published price list, the same one you see before you contact anyone.
That fee is for our drawings. The council's own charge for a householder application, which covers the enlargement, improvement or alteration of a single dwellinghouse, is £548 from 1 April 2026. It is a separate payment to the council, so keep the two apart when you budget.
Why a second storey changes the drawing set
A single storey rear extension is drawn as one new floor plan and an elevation or two. Add a storey and the set grows: a plan for each level, sections showing how the floors stack, elevations from every affected side, and the beams and bearings, taken from the engineer's calculations, that let the upper room sit on the lower one.
That is why we tell you now that the structural calculations are a separate £745, prepared by a named, insured engineer or by your own, rather than leaving them as a later surprise; the all-inclusive package at £2,245 puts them inside one fixed fee. A first-floor room over a ground-floor one has to be drawn so the stacking is clear to whoever reads the set.
Our analysis of the Planning Inspectorate casework database found 169 householder-development appeals decided for Kingston between 2021 and 2026, with 44% allowed.
The permitted development limits that apply to more than one storey
Some homeowners ask whether they can skip a planning application. The rules for house extensions are in Schedule 2, Part 1, Class A of the General Permitted Development Order 2015, and they treat an extension of more than one storey more tightly than a single storey one.
Under Class A.1(h)(i), such an extension must not extend beyond the rear wall of the original house by more than 3 metres. Under Class A.1(h)(ii), it must not be within 7 metres of any boundary of the curtilage opposite the rear wall. Both are quoted from the legislation itself.
Those tests are only part of Class A, and other conditions and local restrictions can apply. Measure your plot against them before you assume anything.
Kingston's recent householder decisions
Our analysis of the government's planning application statistics shows 742 householder decisions in Kingston across the four quarters from 2025 Q3 to 2026 Q2. Of those, 83% were granted. Householder decisions excluding prior approvals were decided within eight weeks in 93% of cases.
Worcester Park sits on a council boundary, so confirm which council covers your address before leaning on any council-level figure. The numbers here are Kingston's, as our data for this page records them.
Householder decisions cover every kind of home alteration, so 83% describes the whole caseload and is not a forecast for one particular extension.
Appeals and conservation areas
Our analysis of the Planning Inspectorate casework database found 169 householder-development appeals decided for Kingston between 2021 and 2026, with 44% allowed.
On designations, the Planning Data Platform lists 28 live conservation areas for the council. Check the council's map against your address to see whether your street is in one.
Article 4 directions near KT4
Our search of the national Article 4 register around the KT4 postcode centre returned 2 live entries. The register is incomplete, so treat that as a lower bound and not proof that the rest of the district is free of them.
An Article 4 direction can take away rights that would otherwise exist, so ask the council about your exact address before you plan around permitted development.
Larger home extension prior approvals for comparison
Prior approval is a different route from a householder application. Across the eight quarters from 2024 Q3 to 2026 Q2, Kingston determined 110 larger home extension prior approvals, granted and refused together.
We mention the figure so you can see how much of the council's extension work goes through that route; it says nothing about a double storey scheme.
Daylight and sunlight questions from neighbours
People in Worcester Park also search for daylight assessments and for what to do about daylight and sunlight objections. This page carries no sourced figures on either, so it makes no claim about them.
What we can say is where the question starts: the height and depth of the new upper floor against the neighbouring windows. Those dimensions come straight off the plans and sections in the set, so having them drawn accurately is the first step.
Sources
Every figure on this page, where it comes from and a link to the original.
| Figure | Source | Link |
|---|---|---|
| £995 | DrawingsDirect starting fixed fee for double storey extension planning drawings, with no VAT to add and structural calculations a separate fee, from the published price list | drawingsdirect.co.uk |
| £548 | Fees for planning applications in England from 1 April 2026 (MHCLG, SI 2012/2920 as annually indexed), category 6(1): householder application for the enlargement, improvement or alteration of a single dwellinghouse (source wording: £548) | assets.publishing.service.gov.uk |
| 3 metres | GPDO 2015 Sch 2 Pt 1 Class A.1(h)(i): an extension of more than one storey must not extend beyond the rear wall of the original house by more than 3 metres (source wording: "by more than 3 metres") | www.legislation.gov.uk |
| 7 metres | GPDO 2015 Sch 2 Pt 1 Class A.1(h)(ii): an extension of more than one storey must not be within 7 metres of any boundary of the curtilage opposite the rear wall (source wording: "be within 7 metres of any boundary of the curtilage") | www.legislation.gov.uk |
| 742 | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 83% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 93% | Our analysis of MHCLG planning application statistics, table PS2 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
| 169 | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 44% | Our analysis of Planning Inspectorate Casework Database (released 1 Oct 2026 (Casework Database 2609)) | www.gov.uk |
| 28 | Our analysis of MHCLG Planning Data Platform conservation-area and article-4-direction datasets (bulk snapshot retrieved 14 Aug 2026) | www.planning.data.gov.uk |
| 2 | Our analysis of MHCLG Planning Data Platform article-4-direction-area dataset (entity API, retrieved 15 Oct 2026) | www.planning.data.gov.uk |
| 110 | Our analysis of MHCLG planning application statistics, table PS1 (district open data table) (released 24 Sep 2026, quarters to 2026 Q2) | www.gov.uk |
Photographs: Derek Harper (CC BY-SA 2.0).
