Ealing, London
Flat conversion drawings in Ealing
Ealing writes its flat-conversion test into the garden: the residential extensions guide asks for a set area of private garden space for each group of flats. Our flat conversion drawings in Ealing show that test met, from £1,195 including VAT, by MCIAT chartered architectural technologists.
From £1,195 (VAT included)
- MCIAT chartered
- £2m PI insured
- LABC Partnered
- Fixed fees, VAT included
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How we work on flat conversion drawings
Seven 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.
Free redraws until approval. Every drawing set is checked independently, and the checker is never the person who drew it.
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Ealing's garden-space rule for converted flats
Ealing's SPD 4 - Residential extensions sets a clear number. Groups of up to five flats require 75 sqm of residential garden space (page ten of the guide). The wording is useful because it is measurable: you can draw the garden, hatch the area and prove the result on the plan before the officer asks.
The sensible way to meet it is to decide who owns what. A shared lawn of the required size can satisfy the test on paper, but a divided garden with a private terrace for the ground-floor flat reads better in the layout and is easier to sell or let later. We draw both, show the areas in a schedule, and advise which one the rule is likely to favour.
The wider framework is older. The borough's core strategy dates from 2,012, with later site and management documents beside it, so the extensions guide is where much of the practical detail sits.

Local figures for Ealing
| Measure | Value | Period | Source |
|---|---|---|---|
| Groups of up to 5 flats require 75 sqm of residential garden space. | 75 sqm | — | ealing.gov.uk, SPD 4 Residential Extensions, p.10 |
| Minor application decisions | 821 decisions | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Minor applications granted | 80 % | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Minor applications decided in time | 94.2 % decided within 8 weeks or an agreed extended period | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Borough CIL residential rate | £300/m² (Central Ealing); £150/m² (Rest of LPA). Mayoral CIL (MCIL2) £60/m² indexed additionally. | schedule rate (approved 16 December 2025, effective 1 March 2026; schedule states RICS CIL Index value for 2026: 400 at adoption) | ealing.gov.uk |
| Mayoral CIL charging band | 2 MCIL2 charging band (1-3) | — | london.gov.uk |
| Mayoral CIL rate (indexed) | 72.73 £/m² (indexed, permissions granted in 2026) | — | london.gov.uk |
| Households living in a house | 50.3 % of households living in a house or bungalow (detached, semi-detached or terraced) | Census 2021 | nomisweb.co.uk |
| Average price, semi-detached | 887,458 GBP | 2026-07 | publicdata.landregistry.gov.uk |
| Average price, flat | 407,789 GBP | 2026-07 | publicdata.landregistry.gov.uk |
| Conservation areas | 31 named conservation areas published by the council | — | planning.data.gov.uk |
| Local plan adopted | 2,012 | — | ealing.gov.uk |
| Change of use of a building to one or more separate dwellinghouses, not more than 10: per dwellinghouse, from 1 Apr 2026 | 610 GBP per dwelling | — | ribblevalley.gov.uk |
| Supplementary planning document | SPD 4 - Residential extensions | — | ealing.gov.uk |
| Listed building entries | 309 list entries (Historic England, within the LPA boundary) | — | planning.data.gov.uk |
| Approved Document E 2003 incl. 2015, Table 0.1a | Separating walls 43 dB DnT,w+Ctr (min); floors and stairs 43 dB airborne (min), 64 dB L'nT,w impact (max) for dwellings formed by material change of use | — | gov.uk |
| Average price, terraced | 711,468 GBP | 2026-07 | publicdata.landregistry.gov.uk |
| Average price change over 12 months | 0.8 % | 12 months to 2026-07 | publicdata.landregistry.gov.uk |
| Lawful development certificate applications (PS1) | 754 certificates | 2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026) | assets.publishing.service.gov.uk |
A blank value means the figure has not been published, not that there are none. Check your own address with the council.
Building regulations, layer by layer
The Approved Documents that shape most house projects, from structure to the application itself.
- A · Part A: structure
- Approved Document A: Structure, 2004 edition incorporating 2004, 2010 and 2013 amendments
- B · Part B: fire safety
- All dwellings: fire detection and alarm system minimum Grade D2 Category LD3 (BS 5839-6), mains-operated smoke alarms to BS EN 14604
- C · Part L: insulation
- New elements in existing dwellings, limiting U-values W/(m²·K): roof 0.15, wall 0.18, floor 0.18, windows 1.4 (or WER Band B), doors 1.4
- D · Part K: stairs
- 2.0 m clear headroom over stairs
- E · Full plans application
- Building control body must decide a full plans application within 5 weeks, or longer if agreed in writing
What Ealing's planning figures show for small schemes
Ealing decided 821 minor applications in the latest twelve months, the class for fewer than ten homes. It granted 80 per cent and decided 94.2 per cent in time. Those are strong figures, and they suggest a well-run desk that rewards complete submissions.
The borough is a mix of house types. 50.3 per cent of households live in a house, a semi-detached home averages about £887,458, and a flat about £407,789. Large inter-war semis with long gardens are the usual candidates for conversion.
Levies, HMOs and heritage in Ealing
Ealing's own levy schedule was revised this spring and reads: £300/m² (Central Ealing); £150/m² (Rest of LPA). Mayoral CIL (MCIL2) £60/m² indexed additionally. Mayoral CIL sits in band 2, at an indexed £72.73 per square metre. Both apply per square metre of new floorspace, and a conversion that creates a dwelling loses the small-extension exemption.
Ealing has an Article 4 direction over HMOs, so if you are weighing flats against let rooms, we cost both before drawing. Heritage is spread thinly: the borough has 31 conservation areas and 309 listed entries. For the wider context, see architectural drawings in Ealing.
Preparing an Ealing conversion
We survey the house, model it in Revit and test the garden split, stacking and entrances in 3D. The deliverable is existing and proposed plans, elevations, sections, a block plan and the garden and area schedules, checked by a second chartered technologist. A neighbour-friendly bin and cycle store is drawn at the front.
Sound is the next job. Conversions need walls and floors that meet Separating walls 43 dB DnT,w+Ctr (min); floors and stairs 43 dB airborne (min), 64 dB L'nT,w impact (max) for dwellings formed by material change of use, which we detail in the building regulations drawings. The council fee is £610 per dwelling, paid to the council.
Ealing streets that suit a conversion
Ealing's suburbs are made of the house types that convert best: wide inter-war semis around Acton, Hanwell and Greenford, and Victorian terraces nearer the centre. A semi-detached home averages about £887,458, a terraced home £711,468, and the borough's average price moved by 0.8 per cent over twelve months.
The garden rule makes plot width and depth the first filter. A deep garden can satisfy the area test and still be divided so that each flat has a usable share, whereas a wide, shallow garden may meet the number but fail the sense of the policy. We scale the garden on the survey drawing before sketching any layouts, because everything else follows from it.
Ealing also decides a lot of paperwork outside conversions. Its latest year includes 754 lawful development certificate applications, and officers see plenty of loft and extension schemes alongside flats. If you want an extension first and a conversion later, a rear extension drawings set can be drawn so the later split is not blocked by the new layout.
Timing and neighbours on an Ealing conversion
Plan the order of events. The survey comes first, then two or three layout options in 3D, then one frozen design and the submission. In Ealing most decisions on small schemes arrive on time, so a sensible owner starts the building regulations drawings while the application is live, rather than waiting for the letter.
Neighbours matter more than owners expect. A new second front door, a bin store beside the boundary or a rear terrace overlooking the next garden are the points that draw objections. We show screening, obscure glazing and bin locations on the drawings, so the case officer sees how each concern was answered, and we respond to officer queries within five working days.
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Related pages
Other services in Ealing
Questions
How much garden does Ealing want for converted flats?
The residential extensions guide asks for 75 sqm for groups of up to five flats.
Can I split the garden between two flats in Ealing?
Yes, provided the garden space required by the guide is still provided overall. We draw the split and the areas.
Is Ealing quick at deciding small housing applications?
94.2 per cent of minor applications were decided within eight weeks or an agreed extension in the latest twelve months.
Sources and dates
- ealing.gov.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- ealing.gov.uk, retrieved
- london.gov.uk, retrieved
- london.gov.uk, retrieved
- nomisweb.co.uk, retrieved
- publicdata.landregistry.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- ealing.gov.uk, retrieved
- ribblevalley.gov.uk, retrieved
- ealing.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- gov.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- gov.uk, retrieved
- gov.uk, retrieved
- gov.uk, retrieved
- gov.uk, retrieved
- legislation.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.