Licence to Alter Drawings in Mayfair

Westminster formally made the Mayfair Neighbourhood Plan on 24 December 2019, so it forms part of the statutory development plan used alongside Westminster’s current planning framework. It supplies local policy and character evidence, but it does not decide what a lease permits or who may approve alterations privately. Those questions remain document- and property-specific.

Westminster’s Mayfair mini guide identifies three eighteenth-century grids: Grosvenor and Hanover Squares, Berkeley Square, and eastern Piccadilly. Routes associated with Tyburn and Conduit Mead interrupt them. Record the host street, plot, frontage and building instead of applying one Mayfair template.

The guide describes the area east of Bond Street and boundary streets as generally more commercial than the quieter residential heart. It distinguishes the local roles of Mount Street, South Audley Street, Shepherd Market, Bond Street, Cork Street and Savile Row. This context is not proof that a particular alteration has permission.

The adopted plan identifies Mayfair’s mews as former service streets and stable or coach-house buildings now used as homes and businesses. A mews brief needs measured evidence about scale, access, openings and materials. The label does not establish ownership, listed status or a consent route.

Shepherd Market has a more intimate pattern of small streets and units than Mayfair’s formal squares and principal streets. The neighbourhood plan links its character to a mix of shops and entertainment while protecting residential amenity. That local evidence can inform an alteration brief, but it should not be projected onto an address elsewhere in Mayfair.

Mayfair Policy MD expects development to respond to local building heights, scales, uses and architectural character. It also seeks to hide or minimise external wires and plant and warns against homogenising Mayfair’s different character areas. Visible grilles, condensers, flues, cameras or roof equipment therefore need address-specific design and statutory checks before a private-consent drawing is frozen.

The neighbourhood boundary and the Mayfair Conservation Area are not identical. The adopted plan records that the eastern edge of the neighbourhood area lies outside the Mayfair Conservation Area and within the Regent Street Conservation Area. The relevant Westminster map, the property’s listing entry and the scope of work must be checked instead of describing every Mayfair project as one conservation case.

A leaseholder Licence to Alter is a private landlord process governed by the lease and the landlord or managing agent’s current requirements. Westminster permission does not grant private rights, and private approval does not replace planning permission, listed building consent or building regulations. Internal work can still affect a listed building’s special interest, so “internal only” is not a safe statutory conclusion.

Grosvenor’s public alterations guide is expressly written for freehold owners of properties subject to its Mayfair or Belgravia Estate Management Schemes. It is not itself a leaseholder Licence to Alter procedure and does not establish that every Mayfair property is controlled by Grosvenor. The title, transfer, lease and named landlord must identify which private route, if any, applies.

Where the Mayfair Estate Management Scheme does apply, Clause 12 requires prior written consent for specified matters involving construction, height, elevation, external architectural appearance, external walls or timbers, and additions. Unlike Clause 17 of the published Belgravia scheme, Mayfair Clause 12 does not expressly add internal load-bearing walls or timbers. A lease may nevertheless control internal structural work separately.

For a property within its scope, Grosvenor’s guide identifies work such as extensions, basements, window changes, roof terraces, external plant, pipework, cameras, signs, lights, aerials, flues and changes of use as common consent questions. Its limited no-consent examples are conditional, including like-for-like repair and some kitchen or bathroom work only where existing service connections remain unchanged.

Grosvenor recommends early concept consultation and says a formal scheme application should include drawings at 1:50 or larger, a specification and supporting information, with an application fee based on builder’s-finish cost. Westminster’s separate requirements must then be checked. For substantial construction traffic, Mayfair Policy MRU4 and Westminster’s current Code of Construction Practice provide the relevant public framework.