Hammersmith & Fulham, London
Velux loft conversion drawings in Hammersmith & Fulham
Velux loft conversion drawings in Hammersmith and Fulham cost £695 including VAT. This is a conservation-heavy borough, with 47 conservation areas across a small footprint. A rooflight scheme here is mostly an exercise in restraint: small, aligned units drawn so the roof still reads as the original.
From £695 (VAT included)
- MCIAT chartered
- £2m PI insured
- LABC Partnered
- Fixed fees, VAT included
Request a fixed quote
How we work on velux loft conversion drawings
Nine steps from first call to approval.
Enquiry and constraints check
We check the property against conservation areas, listed status, Article 4 directions, tree preservation orders, flood zone and planning history. We choose the right route and send a fixed quote.
Measured survey
We survey the house on one datum: rooms, levels, boundaries, drains, trees and the neighbours' windows that the 45° and 25° tests depend on.
Design options
We model the house in Revit and show you options in 3D and plan, with the planning strategy and the precedents in your street.
Design frozen
You choose an option in writing. Nothing changes after this without your say.
Independent check
A second chartered technologist checks every sheet against the council's validation checklist and the policy. A senior review signs it off before anything is submitted.
Submission
We prepare the forms, certificates, fee and documents and submit through the Planning Portal.
Officer liaison
We answer the planning officer and make any amendments within five working days, at no charge until approval.
Building regulations
Technical drawings are coordinated with the structural engineer's calculations, the drainage and the planning conditions.
Approval and hand-over
Building control approval, then a next-steps pack covering the commencement notice, party wall timing and CIL.
Free redraws until approval. Every drawing set is checked independently, and the checker is never the person who drew it.
Request a fixed quote
Conservation areas decide most roofs here
With 47 conservation areas and 268 listed entries, much of Hammersmith and Fulham falls under some form of heritage control. Inside a conservation area dormers lose their permitted development right and flush rooflights face closer scrutiny, and an application needs to show the effect on the area's character, not just the house.
We handle that by drawing the street, not only the plot. The elevation sets your roof beside its neighbours, marks each existing rooflight, and shows the proposed unit in the same plane and weight. Officers in a borough like this tend to favour a scheme that visibly matches what is already on the street.
The borough's own planning register is searchable online, and we look up recent roof decisions on your road before settling the design, so we draw to what has actually been accepted nearby.
Roof windows that are visible from the street are the ones that draw comment. We therefore put the larger units on the rear slope, keep any front unit small and in line with the window below, and avoid anything that would break a regular run of roofs along the terrace.
Local figures for Hammersmith & Fulham
| Measure | Value | Period | Source |
|---|---|---|---|
| Conservation areas | 47 named conservation areas published by the council | — | planning.data.gov.uk |
| Listed building entries | 268 list entries (Historic England, within the LPA boundary) | — | planning.data.gov.uk |
| Householder decisions | 506 decisions | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications granted | 97.8 % | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications decided in time | 79.8 % decided within 8 weeks or an agreed extended period | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Households living in a house | 24.6 % of households living in a house or bungalow (detached, semi-detached or terraced) | Census 2021 | nomisweb.co.uk |
| Average price, terraced | 1,139,759 GBP | 2026-07 | publicdata.landregistry.gov.uk |
| GPDO Sch 2 Pt 1 Class C, para C.1(b) | Roof alterations (e.g. rooflights) may not protrude more than 0.15 m beyond the roof plane | — | legislation.gov.uk |
| Approved Document K 2013, para 1.13, Diagram 1.4 | Loft conversions where 2.0 m cannot be achieved: 1.9 m at the centre of the stair, 1.8 m at the side (half width) | — | gov.uk |
A blank value means the figure has not been published, not that there are none. Check your own address with the council.
Householder applications by street in Hammersmith & Fulham
| Street | Applications | Approved |
|---|---|---|
| Carthew Road | 23 | 96% |
| Rylett Crescent | 22 | 96% |
| Emlyn Road | 21 | 100% |
| Orbain Road | 19 | 100% |
| Quarrendon Street | 19 | 100% |
| Rannoch Road | 19 | 94% |
| St Maur Road | 19 | 94% |
| St Dionis Road | 18 | 100% |
| Gowan Avenue | 17 | 81% |
| Walham Grove | 17 | 77% |
| Banim Street | 16 | 100% |
| Doneraile Street | 16 | 100% |
| Felden Street | 16 | 93% |
| Mendora Road | 16 | 92% |
| Ravenscourt Road | 16 | 100% |
Loft enlargement in section: the permitted development limits
A dormer on the rear slope, with the limits that decide whether it needs planning permission.
- A · Extra roof volume allowed
- 40 m³ (terrace house) / 50 m³ (any other house) additional roof volume
- B · Set-back from the eaves
- Original eaves maintained; enlargement set at least 0.2 m from the eaves measured up the roof slope, so far as practicable (not required for hip-to-gable or roofs joining a rear/side extension)
- C · Height limit
- No part higher than the highest part of the existing roof
A high grant rate with a slower clock
In its latest published year the borough decided 506 householder applications and granted 97.8 per cent, but only 79.8 per cent were decided inside the statutory period or an agreed extension. The pattern is a generous outcome with a slower route to it.
For a client that means planning the programme with patience. A clean set of drawings avoids the follow-up questions that stretch the clock further. These are borough-wide householder figures, not a promise about your application.
Velux loft conversion drawings in Hammersmith & Fulham for flats and houses
Only 24.6 per cent of households here live in a house or bungalow, and 32.1 per cent own their home. Many loft spaces sit above flats, so ownership of the roof, the lease and the neighbours come before the design.
A terraced house averages 1,139,759 pounds in the latest data, which is why a spare bedroom in the roof is a serious proposition. We draw the same sheets for a house or a top-floor flat, but the route differs: a house with intact rights can use a Lawful Development Certificate; everything else goes through planning drawings in Hammersmith and Fulham.
Rooflight, stair and fire detail
Where permitted development applies, the rooflight limit is: Roof alterations (e.g. rooflights) may not protrude more than 0.15 m beyond the roof plane. Side-slope windows are a separate matter: Side roof-slope windows obscure-glazed and non-opening below 1.7 m. In tight Victorian roofs the stair is the harder problem, and the Approved Document accepts a reduced standard: Loft conversions where 2.0 m cannot be achieved: 1.9 m at the centre of the stair, 1.8 m at the side (half width).
Once the loft is a storey the building regulations treat it as one. New storey above 4.5 m by loft conversion: protect the full escape route with fire-resisting doors (min E 20) and partitions (min REI 30). We carry these items into the building regulations drawings in Hammersmith and Fulham so planning and building control tell the same story.
Many houses here have been converted into flats, and the loft is sometimes already shared or used by the upper flat. We ask for the lease and any previous consents at the start, because a roof that has already been altered changes both the route and the drawings.
Our measured visit records ridge height, joist depth, chimney positions and party walls. Chimney breasts in these houses often sit exactly where a stair wants to go, so we test each option on the section before the layout is fixed.
What you pay and where to go next
The fixed fee is £695 including VAT. A second chartered technologist checks each sheet before issue, and we redraw free if the council requests changes.
If the roof is too shallow, a dormer loft conversion in Hammersmith and Fulham may be the alternative, though it meets stiffer scrutiny. The wider choice is set out at loft conversion drawings in Hammersmith and Fulham, and the borough summary is architectural drawings in Hammersmith and Fulham. For the national guide, read Velux loft conversion drawings.
What you receive
Related pages
Other services in Hammersmith & Fulham
Velux loft conversion drawings nearby
Questions
Do I need permission for rooflights in a Hammersmith & Fulham conservation area?
Sometimes. A flush rooflight can still be permitted development in a conservation area unless an Article 4 direction removes it, and with 47 conservation areas we check your address first.
How long does a decision take?
The council decided 79.8 per cent of householder applications in time, so we advise planning for a longer wait than the eight-week target.
What is the escape window rule?
Escape window: unobstructed openable area at least 0.33 m², at least 450 mm high and 450 mm wide, bottom of opening no more than 1100 mm above floor.
How much do the drawings cost?
From £695 including VAT.
Sources and dates
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- nomisweb.co.uk, retrieved
- publicdata.landregistry.gov.uk, retrieved
- legislation.gov.uk, retrieved
- gov.uk, retrieved
- nomisweb.co.uk, retrieved
- gov.uk, retrieved
- Contains public sector information licensed under the Open Government Licence v3.0.
- Contains OS data © Crown copyright and database right 2026.
- Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
- Contains Historic England data © Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026.
Tell us about your property.
We check the constraints, then send a fixed fee. Messages before 3pm get a reply the same working day.