Holborn — covered by Camden Council.
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WC2A primarily covers Holborn in Camden. It also touches Westminster.
Decisions for WC2A are made by Camden Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Camden: Yes.
Building regs from £950. We do not charge hourly. Free site survey across all WC2A addresses.
From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Camden Council timelines align with the national norm.
Holborn in WC2A is characterised by the housing stock of Camden — broadly victorian and edwardian terraces.

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Every WC2A postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. WC2A fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| WC2A | Holborn | mixed Victorian and inter-war stock | WC2A straddles a boundary: Holborn addresses fall to Camden Council or Westminster City Council, so confirm which authority validates the drawing package before submitting WC2A drawings. |
| N1C | King's Cross | Modern apartments, converted warehouses | Adjoining district to WC2A, also inside Camden for drawing package purposes. |
| N6 | Highgate | Georgian villas, Victorian and Edwardian semis | Adjoining district to WC2A, also inside Camden for drawing package purposes. |
| NW1 | Camden Town / Regent's Park | Victorian terraces, mansion blocks | Adjoining district to WC2A, also inside Camden for drawing package purposes. |
| NW3 | Hampstead / Belsize Park | Georgian and Victorian villas, listed buildings | Adjoining district to WC2A, also inside Camden for drawing package purposes. |
| NW8 | St John's Wood | Victorian villas, mansion blocks | Adjoining district to WC2A, also inside Westminster for drawing package purposes. |
| SW1A | Whitehall / Buckingham Palace | mixed stock | Adjoining district to WC2A, also inside Westminster for drawing package purposes. |
| SW1E | Victoria | Regency terraces, post-war flats | Adjoining district to WC2A, also inside Westminster for drawing package purposes. |
| SW1H | St James's Park | mixed stock | Adjoining district to WC2A, also inside Westminster for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few WC2A streets, and each one changes what a drawing package can achieve at that address.
Conservation areas covering WC2A (Holborn): Camden Council runs 40, and Bloomsbury, Camden Town, Fitzrovia are the ones WC2A (Holborn) owners meet most. A drawing package inside a WC2A (Holborn) conservation area loses permitted development, so the WC2A (Holborn) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Camden Town a drawing package is judged on the street elevation first.
WC2A (Holborn) and Article 4: Article 4 removes permitted development for HMO conversions (C3 to C4) across the borough, plus restrictions on basement extensions in 12 conservation areas. A drawing package planned at a WC2A address is checked against that direction first; Camden Council publishes the WC2A (Holborn) extent, and the WC2A line rarely follows the WC2A (Holborn) boundary you would expect.
Digging below a WC2A (Holborn) property: Camden's basement policy (Policy A5) restricts single-storey basements to 50% of garden area; double-storey basements generally refused outside commercial zones. Where a drawing package in WC2A (Holborn) involves excavation that is read beside the Party Wall etc. Act 1996, which needs two months notice for a WC2A (Holborn) dig within 3 m of a neighbour, and Camden Council expects the WC2A ground conditions addressed in the application.
WC2A (Holborn) housing stock: Victorian and Edwardian terraces, Georgian townhouses in Bloomsbury and Hampstead, post-war mansion blocks, modern developments in King's Cross. Creative, affluent in Hampstead and Primrose Hill; dense mixed-use around Camden Town and Kings Cross; academic character in Bloomsbury. Read that before choosing a drawing package route in WC2A (Holborn) — construction, not postcode, sets what is achievable. Camden Council charges £548 for a householder application and has 8 weeks to determine it.
Conservation areas covering WC2A (Holborn): Westminster City Council runs 56, and St John's Wood, Mayfair, Belgravia are the ones WC2A (Holborn) owners meet most. A drawing package inside a WC2A (Holborn) conservation area loses permitted development, so the WC2A (Holborn) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Pimlico a drawing package is judged on the street elevation first.
WC2A (Holborn) and Article 4: Multiple Article 4 Directions — office-to-residential restrictions, HMO conversions, retail to residential in shopping zones. A drawing package planned at a WC2A address is checked against that direction first; Westminster City Council publishes the WC2A (Holborn) extent, and the WC2A line rarely follows the WC2A (Holborn) boundary you would expect.
Digging below a WC2A (Holborn) property: Westminster basement policy restricts to single-storey, typically under 50% of rear garden footprint; lightwells and rooflights strictly controlled in conservation areas. Where a drawing package in WC2A (Holborn) involves excavation that is read beside the Party Wall etc. Act 1996, which needs two months notice for a WC2A (Holborn) dig within 3 m of a neighbour, and Westminster City Council expects the WC2A ground conditions addressed in the application.
WC2A (Holborn) housing stock: Grand Georgian and Regency terraces in Belgravia and Pimlico; Victorian and Edwardian mansion blocks; heritage-rich townhouses throughout; very high listed building density. Heritage-first planning approach; listed buildings on almost every street; basement and rear extension policies particularly strict. Read that before choosing a drawing package route in WC2A (Holborn) — construction, not postcode, sets what is achievable. Westminster City Council charges £548 for a householder application and has 8 weeks to determine it.
Sources for this WC2A drawing package page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.
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