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Improving at W2 4BQ

What you could build at W2 4BQ: the planning rules at this address, what neighbours have built and how big, planning decisions nearby, rough costs and the value an extension adds, and how to get started. In Queensway, Westminster.

222extensions seen within 600 m in the last 10 years

25loft conversions within 600 m in the last 10 years

85%of 46 householder applications nearby approved (since 2023)

52.9extensions per 1,000 homes in the neighbourhood (10 years)

● work seen on energy certificates · ● application approved · ● refused · ● pending or other · ● this postcode

The rules at this address

Mostly flats at this postcode. Flats have no permitted development rights, so almost any extension or loft conversion needs planning permission, and the freeholder's consent under the lease.
In the Bayswater conservation area: permitted development is narrower (for example no side extensions or roof cladding), and demolition and works to trees need consent.
Article 4 direction (Article 4 Basement Development Permitted Rights Removed): some rights normally allowed have been removed here. Check what it covers with the council before relying on permitted development.
Listed buildings need listed building consent for most changes, inside and out: check the National Heritage List.
To be certain work is permitted development, apply for a lawful development certificate (about £129 for householders in England). Building regulations apply either way.

What neighbours have built

Home	Work	Seen	Space added	Floor area	Rooms	Distance
Flat 7, Tennyson House, 1a, Westbourne Grove Terrace	Extension	2026	+15 m²	48 m² → 63 m²	–	140 m
Flat 52, Arthur Court, Queensway	Extension	2026	+23 m²	60 m² → 83 m²	–	221 m
4, The Cloisters, 11, Salem Road	Extension	2026	+20 m²	109 m² → 129 m²	4 → 5	256 m
29a, Alexander Street	Extension	2026	+76 m²	35 m² → 111 m²	1 → 4	268 m
Flat 2, Burnham Court, Moscow Road	Extension	2026	+100 m²	88 m² → 188 m²	–	292 m
22e, Westbourne Gardens	Extension	2026	+8 m²	95 m² → 103 m²	5 → 4	295 m

Planning applications nearby

Address	Work	Outcome	Decided	Drawings and agent
43, Westbourne Gardens, W2 5nr	Loft or dormer	Approved	May 2026	26/00449/FULL
66, Porchester Road, W2 6et	Other householder work	Refused	Apr 2026	26/00930/P3JPA
18b Pembridge Place, London, W2 4xb	Loft or dormer	Approved	Apr 2026	PP/25/06182
29, Alexander Street, W2 5nu	Other householder work	Approved	Nov 2025	25/06962/P3JPA
39, 39 Clanricarde Gardens, London, W2 4jn	Other householder work	Approved	Apr 2026	CL/25/05276
2-3 Ledbury Mews West, London, W11 2ae	Other householder work	Approved

How often householder applications are approved

Work	Queensway	Westminster	London	Typical decision time
All householder applications	–	83% (174)	80%	8 weeks
Loft or dormer	–	83% (18)	81%	10 weeks
Rear extension	–	73% (11)	79%	10 weeks
Two-storey extension	–	–	72%	8 weeks
Other householder work	–	84% (102)	70%	8 weeks
Side return or wrap-around	–	–	88%	8 weeks
Windows, doors or cladding	–	90% (20)	90%	6 weeks
Outbuilding or garden room	–	–	79%	8 weeks
Side extension	–	–	86%	8 weeks
Garage conversion or garage	–	–

Cost and the value it adds

Across England and Wales, homes extended by a typical 30 m² and then resold rose about 11.1% more than similar homes nearby over the same years (124,884 resales). How extensions pay off by size, type and region.

Single-storey rear or side extension: about £2,000–£3,000 per m² (London £2,500–£4,000), plus fees and VAT
Loft conversion: about £45,000–£75,000 for a dormer; more for a mansard or hip-to-gable
Two-storey extension: about £1,800–£2,800 per m² of new floor
Garage conversion: about £15,000–£30,000
Basement: about £3,500–£5,000 per m², London mostly

Build costs are rough 2026 ranges from industry guides, not quotes. Get three quotes for your plans.

Move or improve?

The money you don't get back either way, for the same extra space in Queensway.

Your home is worthExtra space you need (m²)Homes here sell for, per m²Building cost per m²Share of that an extension adds (%)

Move to a home 20 m² bigger (about £983,000)

Stamp duty on the new home	£42,050
Estate agent on yours 1.2% + VAT	£10,872
Solicitors, buying and selling	£3,000
Survey	£600
Removals	£1,500
Money gone	£58,022

Extend by 20 m²

Building, plus 15% for design, planning and contingency	£57,500
Less what it adds to your home's value 60% of the local price	−£136,800
Money gone	−£79,300

On these figures, extending loses about £137,322 less. Moving also changes the area, the schools and the commute; extending means months of building work and depends on planning.

Building costs vary a lot (a single-storey rear extension is often £2,000–£3,000 per m², more in London). How much space adds depends on the home and street: what extensions added to resale prices. A guide, not advice; nothing you type leaves this page.

Getting started

Look at what neighbours did. Open applications above to see drawings that were approved on similar houses, and who designed them.
Check the route: permitted development (with a lawful development certificate), prior approval for larger rear extensions, or full householder planning permission.
Get a measured survey and a designer: an architect, an architectural technologist or a designer who handles planning drawings.
Apply (householder permission is about £258 in England; councils aim to decide within 8 weeks).
Building regulations through the council's building control or an approved inspector, and party wall notices to neighbours if you build on or near the boundary.
Choose a builder: written quotes, a contract, staged payments, and check their insurance and references.

Find help: RIBA Find an Architect ↗ · CIAT architectural technologists ↗ · TrustMark tradespeople ↗ · Federation of Master Builders ↗ · Planning Portal guides ↗

General guidance, not planning or legal advice. Fees and rules as checked in October 2026; confirm with the council.

Energy certificates: MHCLG (OGL). Planning applications: GLA Planning London Datahub. Conservation areas and Article 4: planning.data.gov.uk (OGL).

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Improving at W2 4BQ

The rules at this address

What neighbours have built

Planning applications nearby

How often householder applications are approved

Cost and the value it adds

Move or improve?

Getting started

Go deeper

Improving at W2 4BQ

W2 4BQ is on Kensington Gardens Square

The rules at this address

What neighbours have built

Planning applications nearby

How often householder applications are approved

Cost and the value it adds

Move or improve?

Getting started

Go deeper

W2 4BQ is on Kensington Gardens Square