London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Hammersmith and Fulham property, building regulations, structural steelwork and Party Wall notices.
A rear dormer drawings package in Hammersmith and Fulham, where the stock is largely Victorian and Edwardian terraces — particularly two-storey bay-fronted terraces south of the river in Fulham and Parsons Green; mansion blocks along main roads, is the full measured-survey-to-submission drawing set London Borough of Hammersmith and Fulham needs in order to determine an application: existing and proposed plans, elevations and sections at 1:100 and 1:50, a location and site plan, and the supporting statements the case officer asks for.
Prepared and reviewed by the chartered technologist team at Architectural Drawings London — MCIAT chartered, £2m PI insured.Last reviewed 2026-08-03.
London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Hammersmith and Fulham property, building regulations, structural steelwork and Party Wall notices.
Housing stock in Hammersmith and Fulham: Victorian and Edwardian terraces — particularly two-storey bay-fronted terraces south of the river in Fulham and Parsons Green; mansion blocks along main roads.
Character: Suburban-feel residential streets with strong conservation area coverage; well-established mansard precedents on many terraces.
Article 4: Article 4 removes PD for HMO conversions; restrictions on ground-floor shop-to-residential in certain streets.
We confirm whether your Hammersmith and Fulham rear dormer qualifies for Permitted Development — checking volume limits (40m³ terraced, 50m³ semi/detached), Article 4, conservation area and prior extension history.
If PD applies, we obtain a Lawful Development Certificate for certainty. If not, we submit full planning with Design & Access Statement to Hammersmith & Fulham Council.
Full-width flat-roof rear dormer with matching materials, set in from party walls, cheeks clad to match existing roof — the design that Hammersmith & Fulham Council approves most readily.
Part B fire escape (protected staircase, fire doors, smoke alarms), Part K staircase, Part L insulation, Part E acoustic separation.
Steel ridge beam, purlin supports, dormer framing, floor joist upgrade — chartered engineer sign-off for Building Control.
Most rear dormers in Hammersmith and Fulham's terraced streets trigger Section 6 Party Wall notices. We draft, serve and coordinate the process.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Move the controls for an indicative figure. It anchors your budget — it is not a quote. Every project is priced after a free survey.
Build costs are separate and quoted by your contractor. See our published fees.
Every Hammersmith and Fulham postcode district we draw in, the stock that dominates it and the authority that validates a rear dormer there. Hammersmith and Fulham fees below are the statutory England rates for 2026, not rear dormer estimates.
| Postcode | Area | Dominant stock | What it means for a rear dormer |
|---|---|---|---|
| SW6 | Fulham / Parsons Green | Victorian terraces, mansion blocks | Fulham / Parsons Green sits wholly inside SW6, so Hammersmith & Fulham Council validates every rear dormer submitted from an SW6 address. |
| W6 | Hammersmith / Brackenbury Village | Victorian terraces, mansion blocks | A rear dormer at an W6 address in Hammersmith / Brackenbury Village is determined by Hammersmith & Fulham Council under its own Local Plan policies for Hammersmith / Brackenbury Village. |
| W12 | Shepherd's Bush / White City | Victorian and Edwardian terraces | A rear dormer at an W12 address in Shepherd's Bush / White City is determined by Hammersmith & Fulham Council under its own Local Plan policies for Shepherd's Bush / White City. |
| W14 | West Kensington / Barons Court | Victorian and Edwardian villas | A rear dormer in West Kensington / Barons Court may land with Hammersmith & Fulham Council or RBKC Planning — W14 crosses the boundary, and the W14 policies map decides it street by street. |
| SW10 | West Brompton / World's End | Georgian and Victorian terraces, listed buildings | West Brompton / World's End is split at SW10. Either RBKC Planning or Hammersmith & Fulham Council can determine a rear dormer here, so the SW10 address is checked against both policies maps first. |
Roof pitch, wall build-up and plot depth change every few Hammersmith and Fulham streets, and each one changes what a rear dormer can achieve at that address.
Hammersmith and Fulham conservation designations: there are 45 across Hammersmith & Fulham Council, Walham Green, Hammersmith Grove, Brackenbury Village among them. Designation costs a Hammersmith and Fulham owner the permitted-development route: a rear dormer then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Parsons Green is the Hammersmith and Fulham designation that most often changes a rear dormer design.
Article 4 and your Hammersmith and Fulham rear dormer: Article 4 removes PD for HMO conversions; restrictions on ground-floor shop-to-residential in certain streets. At a SW6 address that matters twice over, because Hammersmith & Fulham Council applies the direction unevenly across Hammersmith and Fulham — we read the Hammersmith and Fulham policies map for the exact SW6 address before quoting rear dormers.
Hammersmith and Fulham housing stock: Victorian and Edwardian terraces — particularly two-storey bay-fronted terraces south of the river in Fulham and Parsons Green; mansion blocks along main roads. Suburban-feel residential streets with strong conservation area coverage; well-established mansard precedents on many terraces. Read that before choosing a rear dormer route in Hammersmith and Fulham — construction, not postcode, sets what is achievable. Hammersmith & Fulham Council charges £548 for a householder application and has 8 weeks to determine it.
Sources for this Hammersmith and Fulham rear dormer page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.
Direct answers to the questions Hammersmith and Fulham homeowners ask every week about rear dormer drawings.
Start a free quote →It depends on your exact address in Hammersmith and Fulham. Most standard loft conversions qualify as Permitted Development (no planning permission needed) if under 40m³ for terraced or 50m³ for semi-detached, with matching materials and 20cm eaves setback. However Hammersmith and Fulham has Article 4 Directions that may remove these rights — and flats, conservation areas and listed buildings always require full planning. We confirm permitted development eligibility at the free feasibility visit. Full-width rear dormers are the most common PD loft type in Hammersmith and Fulham — provided the volume, materials and setback conditions are met. We check every condition before committing to a route.
A Hammersmith and Fulham rear dormer has two cost lines: our architectural package (drawings, building regulations and structural calculations, quoted as one fixed figure) and the build, which moves with access, floor area and specification — an en-suite adds plumbing runs and drainage. See our fees.
A full-width rear dormer in Hammersmith and Fulham typically adds 15–25 square metres of habitable floor area — enough for a double bedroom with en-suite, or two single bedrooms. The flat roof gives full standing height across the entire width of the house, unlike a rooflight-only conversion which is constrained by the roof pitch.
Rear dormers in Hammersmith and Fulham's conservation areas usually need full planning permission because PD rights are restricted. However, because they face the rear (not the street), Hammersmith & Fulham Council typically views them more favourably than front dormers or mansards. A well-designed rear dormer with matching materials and sensitive proportions has a strong approval record.
A standard rear dormer in Hammersmith and Fulham takes 8–12 weeks to build once on site. Our architectural package takes 3–5 weeks from instruction to submission. Building Control approval adds 2–4 weeks. Total timeline from survey to move-in: approximately 4–5 months.
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