Camden
We prepare building-specific Licence to Alter packages for South Hampstead flats. The lease and the landlord's written alteration requirements control the private consent; Camden planning and building regulations remain separate checks.
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The short answer
No area-wide answer is reliable. The lease and the landlord's current alteration procedure decide. Structural openings, wet-area moves, floors, fire separation, services or common parts often trigger written technical evidence; external changes can also need a separate Camden planning check under the live Article 4 schedule.
Planning at a glance
South Hampstead
| Local planning authority | Camden |
|---|---|
| Postcode districts | NW6 / NW8 |
| Conservation area | South Hampstead Conservation Area — appraisal adopted February 2011 |
| 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 | Formerly named the Swiss Cottage Conservation Area — older leases, documents and planning references may still use that name. |
| Typical drawing package | £1,500–£2,750 inc. VAT, fixed fee. Find my package → |
Camden's adopted 2011 appraisal recorded about 1,150 buildings in the conservation area, around 1,000 of them residential, containing roughly 3,850 individual properties. It estimated that about 70% of residential properties were purpose-built or converted flats. Those are historical appraisal figures, not proof of the ownership or alteration rules for a particular address.
Current Camden pages call the designation South Hampstead Conservation Area and note its former Swiss Cottage name. Older leases, planning records and alteration documents may therefore use different labels; we search the exact address rather than treating either neighbourhood name as a consent rule.
A kitchen move, bathroom relocation, new opening or floor build-up should be tested against the demise, structure, drainage, acoustic separation, fire stopping and common parts before the proposed plan is fixed. The landlord's surveyor may request evidence, but the exact list must come from the lease and the building's own alteration guide.
Camden's current Article 4 page links a schedule and affected-property map for South Hampstead. Where the address is included, specified frontage, road-facing side, window, door, rooflight, flue, soil-pipe, hard-surface or boundary changes can require planning permission. The map is checked before any external element is described as permitted development.
The private, public and technical routes are separated at the start: written landlord consent under the lease, Camden planning where the proposal triggers it, and building regulations for controlled construction work. A decision on one route does not grant the others.
Useful first evidence is the lease and demise plan, the landlord or managing agent's current guidance, previous consent correspondence for the same flat, photographs of common parts, an existing plan, and a precise schedule of openings, wet-area moves, flooring and external penetrations.
Access hours, protection of common parts, waste routes and contractor rules are taken from this building's management requirements. We do not infer them from the street, the postcode or another South Hampstead block.
Building-control information remains distinct from the Licence package. Structural calculations, fire stopping, drainage, ventilation and acoustic details should be consistent across both submissions, without implying that landlord approval is statutory approval.
Our fee follows the confirmed drawing and coordination scope. Any landlord, managing-agent, surveyor, engineer, acoustic consultant, fire consultant, council or building-control charges are identified separately once the responsible parties and their requirements are known.
A proposed vent, replacement window, rooflight or altered door can turn an otherwise internal refurbishment into a Camden planning question. The freeholder set and planning set should use the same surveyed opening sizes and locations while explaining their different consent purposes.
South Hampstead's conservation appraisal informs visible change; it does not create a universal Licence to Alter rule. The private rule remains the actual lease and written landlord process for the building.
Party Wall etc. Act questions are assessed from the proposed structural work and adjoining ownership, not assumed from the neighbourhood. Where notices or awards are required, their programme is coordinated with landlord review rather than left until after tender.
A previous refusal or qualified consent for the same flat is useful evidence. The revised pack should answer each recorded condition directly instead of relying on a generic statement that the proposal is low risk.
A full appointment can cover lease triage, measured survey, proposed drawings and coordination of the evidence the named landlord requests, followed by separate Camden planning and building-regulations work only where the proposal requires those routes.
Consent from another flat or neighbouring block is not a precedent for this lease. Demise, retained structure, risers, common parts and management rules must all be confirmed for the address being altered.
The June 2026 Camden Article 4 fact sheet is an external-work checkpoint, not a substitute for the lease. We check the live schedule and map for the property, then keep any planning application separate from the landlord's decision.
Local analysis
Its 2011 snapshot records a conservation area with a high proportion of purpose-built and converted flats. That supports early lease and building-type triage; it does not prove the current tenure, demise or landlord requirements for an individual home.
Camden now publishes a South Hampstead schedule, property map and fact sheet. We use them to test specified external changes for the exact address, while keeping that planning assessment separate from anything the lease requires privately.
Drainage routes, structure, acoustic build-ups, fire separation and common-part interfaces vary between purpose-built blocks and converted houses. The pack follows the surveyed building and written landlord checklist rather than a neighbourhood template.
Local services
The agreed package may include existing and proposed plans, a demolition plan, opening details, drainage and wet-area information, flooring build-ups, fire stopping, ventilation and a method statement. We include an item only when the proposal or named reviewer requires it.
We will not claim that every flat needs the same licence, that Camden planning grants landlord consent, that another block's approval binds this landlord, or that conservation-area status alone proves the Article 4 schedule applies to the address.
Local evidence
Obtain the title or lease plan, relevant alteration clauses, the managing agent's latest procedure, existing drawings if reliable, prior decisions for the same flat, common-part rules and the Camden Article 4 address result. These define the evidence brief before design assumptions harden.
Local process
Read the lease and alteration procedure, verify the demise, survey existing structure and services, check any external element against Camden's live Article 4 map, then agree which landlord, planning and building-control drawings are actually needed.
The landlord, council and building-control reviewer make different decisions, but surveyed openings, levels and service routes must stay consistent. Each issue sheet identifies its audience so one approval is never presented as another.
Thinking about a project in South Hampstead?
Send the address and a short description. We will confirm the likely approval route and the drawings your project needs.
Local planning
The South Hampstead Conservation Area appraisal and management strategy was adopted in February 2011 and is used by Camden when assessing development in the conservation area.
The appraisal uses the former Swiss Cottage name in its history and records a strong flat and mansion-block context, but any Licence to Alter requirement still comes from the individual lease and landlord.
Camden's live Article 4 page links the current schedule and affected-property map. Only after checking the exact address do we advise whether a specified external alteration needs planning permission.
For affected properties, the June 2026 fact sheet identifies controlled changes to front elevations and road-facing sides. It also explains separate existing controls for flats; it does not grant permission for rear extensions, lightwells, dormers or listed-building work.
Planning permission, written landlord consent and building-regulations approval are separate decisions even when one coordinated measured model supports all three.
The landlord's evidence list must be obtained from the current alteration procedure. We do not describe a Camden-wide private-freeholder standard where none exists.
Party-wall responsibilities depend on the proposed work and ownership pattern, so they are checked alongside rather than inferred from the conservation-area designation.
Earlier decisions for the same flat or building are reviewed as evidence, while approvals from unrelated buildings are not treated as permission for this address.
Camden publishes separate South Hampstead maps for the conservation boundary, topography, urban grain, character areas, trees, townscape and designation dates. The relevant map is checked for the address before external details are fixed.
The Article 4 schedule controls specified permitted-development rights on affected properties; it does not prohibit change and it does not replace the landlord's private consent process.
For the wider local-authority picture — policies, timescales and application routes — see planning in Camden.
Services
Extensions & Renovations
Leasehold & Licence to Alter
Nearby
Send your South Hampstead address, lease notes if available, and a short description of the works. We will outline the freeholder pack your project is likely to need.
