Camden
We design loft conversions for West Hampstead houses, converted houses and upper maisonettes. Begin by establishing the legal building, proposed work, executed lease and whether the roof void and affected structure are demised.
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The short answer
A loft conversion may be feasible after the planning unit, complete application site, proposed roof work, planning history, executed lease, demise and measured structure are checked. Flats and buildings containing flats cannot use Part 1 because of property type; public and landlord consents remain separate. No consent or programme is guaranteed.
Planning at a glance
West Hampstead
| Local planning authority | Camden |
|---|---|
| Postcode district | NW6 |
| Likely approval route | Householder planning application or permitted development, depending on conservation status, listing and property type — confirmed for the exact address before drawings begin |
| Statutory determination time | 8 weeks for most householder applications (13 weeks for major applications) |
| Local planning note | West Hampstead is a neighbourhood label, not proof that an address is inside the Fortune Green and West Hampstead Neighbourhood Area, West End Green Conservation Area, South Hampstead Conservation Area, a heritage Article 4 direction or a listed building. Camden adopted the Camden Local Plan on 3 July 2017. Its proposed replacement was submitted for examination on 3 October 2025; hearings ended on 12 June 2026 and Camden was still publishing examination documents on 3 August 2026, so it was not an adopted replacement on the 12 August 2026 source check. The Fortune Green and West Hampstead Neighbourhood Plan was made on 16 September 2015 and applies only inside its mapped neighbourhood area. The West End Green appraisal was adopted on 28 February 2011, but its recommendation for Article 4 controls is not itself an operative direction; Camden’s current heritage Article 4 page does not list West End Green. Camden adopted a replacement heritage direction on 9 June 2026 for mapped South Hampstead properties and scheduled operations only. Its separate borough-wide basement Article 4 direction took effect on 1 June 2017. Check the exact address, property type, planning history, policy and designation maps, Article 4 schedule, national and local listing records, title and lease, and proposed works before advising. |
| Where most projects start | Planning Route Review — £395 inc. VAT, credited in full against your package if you proceed. Find my package → |
The opening move on a West Hampstead loft is to establish the legal building, proposed work and ownership evidence. Flats and buildings containing flats cannot use Schedule 2 Part 1. The executed lease and plan, rather than the apparent layout or area label, determine whether the roof void and affected structure are demised and whether written landlord consent is required.
Planning, landlord consent and Building Regulations are separate. Define the proposed work for the public-law route; use the executed lease and plan for any landlord-consent route. A shared measured base may support separate packages, but neither route determines the other or guarantees an outcome or programme.
Where mapped West End Green evidence applies, assess the proposed roof form against the measured host, actual public and neighbour viewpoints and the documented roof character. A neighbour's dormer or a street label does not transfer an outcome. Assess any roof-terrace proposal from its ownership evidence, visibility and measured overlooking relationship.
Survey the existing roof, load paths and affected structure rather than inferring them from age, conversion history or NW6. Define any acoustic and fire-separation requirements from the legal building and actual work, and check beam bearings against the Party Wall Act only where the defined work engages it.
Adding a habitable storey can change the applicable fire and escape strategy. Define the legal building, layout and proposed work, then identify the current Building Regulations evidence; no single protected-route or upgrade specification follows from the West Hampstead, maisonette or loft label.
Where measurement confirms railway or other noise exposure at the subject roof, the ventilation strategy should not rely on an open rooflight without testing the consequences. Glazing, background or mechanical ventilation and overheating evidence then belongs in the technical package; proximity alone does not prove that every loft needs it. Our route separates tenure and roof ownership, the mapped planning position, measured survey, any landlord consent and Building Regulations information. We do not promise approval or timing.
Local analysis
Use the executed lease and plan to establish whether the roof, roof void and affected structure are demised or retained, and whether written landlord consent is required. That contractual route remains separate from planning and Building Regulations; no result follows from the NW6, converted-house or top-floor label alone.
Where the complete application site maps inside West End Green, the appraisal and adopted neighbourhood-plan evidence can inform roof character. That does not prescribe an outcome: survey the host roof and the actual public and neighbour viewpoints, then test the proposed dormer against the evidence. The appraisal's area-level contour description is not a level survey or proof of visibility from an individual property.
Adding a habitable storey can change the applicable fire and escape strategy. Define the legal building, layout and proposed work, then identify the current Building Regulations evidence; no single protected-route or upgrade specification follows from the West Hampstead, maisonette or loft label. Coordinate measured headroom, structure and any separation details before fixing the roof form.
Thinking about a project in West Hampstead?
Send the address and a short description. We will confirm the likely approval route and the drawings your project needs.
Local planning
Camden is the local planning authority for a West Hampstead application site, but the neighbourhood name and NW6 postcode do not establish conservation, Article 4 or listing status. Map the complete site against the separate West End Green and South Hampstead boundaries. The West End Green appraisal was adopted on 28 February 2011 and its Article 4 recommendation is not an operative direction; South Hampstead's replacement heritage direction was adopted on 9 June 2026 for mapped properties and scheduled operations.
Flats and buildings containing flats cannot use Schedule 2 Part 1 because of property type. A qualifying dwellinghouse may use a roof-alteration class only if every limitation and condition is met and no planning condition or operative Article 4 direction changes the route. Conservation status creates class-specific restrictions rather than removing every right. Select any lawful-development certificate or planning application from the planning unit, history, maps and proposed roof work, without promising consent or a determination date.
Whether the Act applies depends on the defined work. Section 1 covers qualifying work at the line of junction; section 2 covers specified work to a party wall or structure; section 6 covers excavation within 3 metres only where it goes below adjoining foundations, or within 6 metres where it meets the statutory 45-degree line. If notice is required, an award follows only after dissent or a deemed dispute; valid written consent does not require an award. Building Regulations remain a separate technical route.
Where a West Hampstead address sits within the West End Green Conservation Area, the roof is assessed against the area's character rather than against a dimension. The Fortune Green and West Hampstead Neighbourhood Plan describes that conservation area as having a 'London village' character and as a homogeneous piece of Victorian and Edwardian domestic architecture, and Camden's material describes side streets of red-brick houses and mansion blocks. A homogeneous roofline is exactly the condition in which an isolated bulky dormer reads as a break in the pattern, so we design the roof addition to sit within the rhythm rather than to maximise volume.
The West End Green appraisal's area-level contour description is not a level survey or proof of a view from an individual property. For a mapped site, test the proposed roof alteration from the actual public and neighbour viewpoints recorded by survey rather than assuming that 'rear' means unseen. We do not promise approval or timing on any roof scheme.
For the wider local-authority picture — policies, timescales and application routes — see planning in Camden.
Services
Extensions & Renovations
Leasehold & Licence to Alter
Nearby
Send us your complete West Hampstead address and tell us whether the property is a house, flat or maisonette. We will map the application site, read the executed lease where relevant, and outline the applicable planning, landlord and Building Regulations routes without promising consent or timing.
