Loft Conversion Drawings in Holland Park | From £1,225

An Article 4 Direction applies across Kensington and Chelsea, so check it before assuming Holland Park permitted development survives. The character of Holland Park is the yardstick a RBKC Planning officer measures a scheme against: Victorian villas around the park. Of the 38 conservation areas Kensington and Chelsea designates, Chelsea and Notting Hill are the ones that most often change how a Holland Park project is routed. Designation status for the W11 address is established first.

That mapping of Article 4 directions across Holland Park happens before design, which is what keeps the RBKC Planning route predictable. What the Holland Park building allows is established first; what RBKC Planning allows, second. The borough policy layer over every W11, W14 address is set out on Kensington and Chelsea planning. The Holland Park survey then carries into house extension drawings in Holland Park if the project runs on to construction.

The Holland Park clock does not start until Royal Borough of Kensington and Chelsea validates — one to two weeks. The first visit to Holland Park is a measured survey — every room, every opening, every level change recorded on site.

Statutory periods: 8 weeks from validation for a householder application, 13 weeks for a major scheme, 6 weeks for prior approval with a 21 days neighbour consultation, and 5 weeks for a full plans building control submission. A party structure notice requires one month notice and two months where excavation is involved.

Neighbour consultation on a Holland Park case runs 21 days from registration. Holland Park clients receive existing and proposed sheets in one indexed set.

Comments on a Holland Park application are visible on the Royal Borough of Kensington and Chelsea portal. A Holland Park survey takes two to three hours and needs access to every room.

The party wall step is not optional on shared Holland Park walls, and serving late is what stalls sites. Once consent is granted, architectural drawings follows for the W11 property.

Holland Park is characterised by victorian and edwardian villas, concentrated across W11, W14 in the Notting Hill / Holland Park area. Holland Park is not uniform, but the victorian and edwardian villas recurs often enough across W11, W14 that the structural pattern is predictable once measured. Reading that across to Holland Park stock: the Victorian butterfly and double-pitched roofs on these streets normally clear the 2.2 m head height a dormer conversion needs once the ceiling joists are raised. It is why the Holland Park existing set is measured, not traced. The blocks around Design Museum set the prevailing eaves and ridge lines, and RBKC Planning officers reference that rhythm when assessing height and massing on a Holland Park street.

Digging down in Holland Park runs into policy: RBKC's basement policy (post-2015) limits to single-storey under 50% of garden area; double-storey basements effectively prohibited in residential streets. Survey once, use it for every W11 submission that follows.

What the Holland Park drawing pack contains

What we hand over for a Holland Park property:

• existing roof plan and section for the Holland Park property
• proposed dormer elevations
• volume calculation sheet
• staircase and head-height sections
• structural steel layout

Streets and landmarks we survey around Holland Park

• Holland Park Avenue — terraced rear elevations — the Holland Park Avenue party wall position is drawn first.
• Kensington High Street — closet wings that change how a rear extension meets the Kensington High Street back addition.
• Notting Hill — side returns where the 45-degree amenity test decides how far a Notting Hill extension goes.
• Kensington Gardens — side returns where the 45-degree amenity test decides how far a Kensington Gardens extension goes.
• Hyde Park — side returns where the 45-degree amenity test decides how far a Hyde Park extension goes.
• Addison Road — terraced rear elevations — the Addison Road party wall position is drawn first.
• Holland Villas Road — roof profiles that set the ridge datum RBKC Planning measures a Holland Villas Road dormer against.
• Ilchester Place — front-to-back level changes that drive the Ilchester Place section drawings.
• Design Museum — it fixes the local datum a Holland Park roof extension is judged against.
• Holland Park — height and massing nearby are argued against this frontage.
• Royal Academy — height and massing nearby are argued against this frontage.
• Holland Park School — schemes visible from it get closer scrutiny in Kensington and Chelsea.

Where Holland Park sits

on Ordnance Survey grid reference TQ246798, inside the Kensington and Bayswater parliamentary constituency. Location and block plans for Holland Park start from that grid square. Source.

Practical detail for a Holland Park submission: Royal Mail routes it as LONDON; dialling code 020. Site plans are drawn to the address as RBKC Planning holds it.

Holland Park postcode coverage

Holland Park work spans W11 (Notting Hill / Holland Park), shared with Notting Hill; W14 (West Kensington / Barons Court), shared with Barons Court, with the W11 boundary setting which designations bite.

Streets and stations in Holland Park

We survey Holland Park addresses on Holland Park Avenue, Kensington High Street, Notting Hill, Kensington Gardens, Hyde Park, Addison Road, Holland Villas Road and Ilchester Place.

Areas we cover around Holland Park

Holland Park sits in a patch that also takes in Brompton (SW3), Mayfair (W1J, W1K), Belgravia (SW1X, SW1W), Marylebone (W1U, W1G, W1H), Pimlico (SW1V), Soho (W1D, W1F), and we work all of it as far as the Hammersmith and Fulham boundary.

Price differences between Holland Park projects come from the fabric — the victorian and edwardian villas, level changes, and any Chelsea heritage requirement.

Statutory application fees are set by regulation, not by the council: £548 householder, £610 for a new dwelling, £274 for a lawful development certificate, £249 for prior approval.

We invoice the drawings only; Royal Borough of Kensington and Chelsea takes the statutory fee from the Holland Park applicant. London planning approval-rate dataset · Kensington and Chelsea planning · loft conversion drawings across London · loft conversion drawings in Brompton.

The technologist drawing your Holland Park scheme is MCIAT chartered — the professional body for technical design and building-regulations competence. For difficult Holland Park sites — anything in Chelsea, anything overlooking Holland Park — the pre-application route is cheap insurance.

Drawings are produced by chartered members of the Chartered Institute of Architectural Technologists (MCIAT), the professional body for technical design and building-regulations competence. First-time approval across our London caseload is 98%. Statutory fees shown are those in force in England in 2026 under the Town and Country Planning (Fees for Applications) Regulations. Confirm your local authority at gov.uk and submission requirements on the Planning Portal. Studio: 71–75 Shelton Street, London WC2H 9JQ.

One visit to the W11 property is all we need to quote properly. This Holland Park page was reviewed in August 2026.