Loft Conversion Drawings in Mortlake | From £1,225

No Article 4 Direction covers Richmond upon Thames, which keeps the Mortlake permitted-development route open on unlisted houses. The character of Mortlake is the yardstick a Richmond Council officer measures a scheme against: Victorian and Edwardian terraces. Where a Mortlake property sits inside Richmond Green or Kew Green — two of Richmond upon Thames's 72 designations — permitted development narrows and a full Richmond Council submission is usually quicker. We confirm the SW14 designation at survey rather than assuming it.

Before drawing anything for Mortlake, we check Article 4 directions against the SW14 boundary. The Mortlake numbers come off the building: rear wall, levels, ridge against Mortlake station. The borough policy layer over every SW14 address is set out on Richmond upon Thames planning. The Mortlake survey then carries into house extension drawings in Mortlake if the project runs on to construction.

The Mortlake clock does not start until London Borough of Richmond upon Thames validates — one to two weeks. The first visit to Mortlake 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.

Amendments during the Mortlake determination are handled without a resubmission where possible. Each SW14 drawing carries the address, scale, north point and revision.

The Mortlake consultation period is where a weak scheme is exposed. Existing structure in the victorian and edwardian terraces is identified at survey, not guessed later.

The party wall step is not optional on shared Mortlake walls, and serving late is what stalls sites. Once consent is granted, architectural drawings follows for the SW14 property.

Mortlake is characterised by victorian and edwardian terraces, concentrated across SW14 in the Mortlake / East Sheen area. What the victorian and edwardian terraces in Mortlake allows is a construction question first and a planning question second, and the survey answers it. On SW14 plots specifically, 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. On Mortlake plots that shows up in the section drawings. Because the Mortlake streetscape near Mortlake station is consistent, departures in ridge height read immediately in an officer report.

Lower-ground schemes in Mortlake answer to neighbours and groundwater. Survey data from the Mortlake property flows straight into planning permission for SW14 properties or building regulations drawings without a second site visit.

What the Mortlake drawing pack contains

For a SW14 address the deliverables are fixed, not open-ended.

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

Local landmarks that shape a Mortlake application

• Mortlake High Street — gardens deep enough for the 8 weeks householder route on a Mortlake High Street plot.
• High Street — roof profiles that set the ridge datum Richmond Council measures a High Street dormer against.
• Richmond Park — terraced rear elevations — the Richmond Park party wall position is drawn first.
• Mortlake station — a Mortlake roof extension is judged against the datum it sets.
• Chiswick Bridge — nearby victorian and edwardian terraces takes its scale from this frontage.
• Barnes Bridge — proposals in its setting are drawn with the Mortlake context elevation.

Getting to a Mortlake survey

Surveyors travel to SW14 addresses from the studio; the nearest stations are Mortlake, Barnes Bridge, North Sheen, Windsor Riverside station. Appointments are booked in Mortlake on weekdays and Saturdays, and the measured survey of a standard victorian and edwardian terraces takes two to three hours.

Where Mortlake sits

on Ordnance Survey grid reference TQ205755, with the River Thames shaping drainage and flood-risk questions on lower-lying SW14 plots. Every Mortlake application opens with a location plan tied to that grid square; get it wrong and Richmond Council returns the submission unvalidated. Source.

Practical detail for a Mortlake submission: Mortlake and Barnes Bridge and North Sheen and Windsor Riverside station serve the area; post town LONDON; dialling code 020; the listed stock near Mortlake includes Grade II air raid shelter. Site plans are drawn to the address as Richmond Council holds it.

Mortlake postcode coverage

Mortlake work spans SW14 (Mortlake / East Sheen), shared with East Sheen — the designations change with the district line.

Streets and stations in Mortlake

Mortlake addresses we have drawn run to Mortlake High Street, High Street and Richmond Park. most Mortlake sites are within walking distance of Mortlake or Barnes Bridge or North Sheen. and Grade II air raid shelter is listed, which pulls neighbouring SW14 proposals into a setting assessment.

Areas we cover around Mortlake

Besides Mortlake: Sand's End (SW6), Richmond (TW9, TW10), Twickenham (TW1, TW2), Kew (TW9), Barnes (SW13), East Sheen (SW14), plus Kingston upon Thames across the border.

The variables on a SW14 job are structural: party walls, floor levels, and whether the Richmond Green designation adds a heritage statement.

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.

Those statutory fees go to London Borough of Richmond upon Thames on submission. London planning approval-rate dataset · Richmond upon Thames planning · loft conversion drawings in London · loft conversion drawings in Sand's End.

We are architectural technologists, MCIAT chartered, and every Mortlake set carries that accountability. Where a Mortlake case is borderline — a corner plot near Mortlake station, a Richmond Green frontage, a flank wall hard onto a SW14 neighbour — we buy pre-application advice from Richmond Council rather than gamble the statutory 8 weeks.

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.

Tell us the SW14 address and what you want to build; the rest we handle. This Mortlake page was reviewed in August 2026.