Chartered planning drawings prepared for Hounslow Council — from Bedford Park and Strand-on-the-Green to the Feltham cottage estates, drawn to the Hounslow Local Plan, delivered in days and revised free until you have a decision.
Hounslow runs the full length of West London's spectrum, and its planning framework — the adopted Hounslow Local Plan with a replacement plan now at examination — has to govern all of it. At the eastern end, Chiswick's Victorian and Edwardian terraces sit among Thames-side conservation areas and Norman Shaw's pioneering Bedford Park estate; Brentford is mid-transformation, canalside towers rising around its historic High Street and the old Great West Road industrial 'Golden Mile'; Isleworth mixes Georgian riverside survivors around Old Isleworth with interwar avenues. Further west, Hounslow town, Heston, Osterley, Cranford, Feltham, Hanworth and Bedfont are dominated by 1930s semis and post-war cottage estates on generous plots.
With over 500 listed buildings and 29 conservation areas across that range, a pack that satisfies an officer in Feltham can be dismantled in Bedford Park. We prepare architectural drawings across the borough constantly, so we know what Hounslow's validation team expects and where officers push back. Every pack is drawn to the borough's residential design guidance from the first line — existing and proposed floor plans, elevations on all affected sides, an OS-based location plan and block plan, each at a recognised metric scale with a scale bar and paper size stated.
Because we track live decision data for Hounslow, we can tell you before you spend anything whether your scheme reads as an approval or needs reshaping. And if the planners push back, revisions are free until you have a decision — you never pay twice to reach a yes.
Many Hounslow home projects need no application — single-storey rear extensions, rear-dormer lofts and outbuildings can fall within permitted development on the borough's interwar streets. You will usually need a full application to Hounslow Council where any of these applies:
Before you commit, it helps to see how Hounslow Council is actually deciding. The figures below come straight from official planning statistics for the borough. Hounslow refusals cluster around a familiar set of objections — overbearing two-storey additions, dormers that dominate a matched pair of Heston semis, harm to the Thames-side and Bedford Park conservation settings, and loss of light to neighbouring habitable rooms. We design against each before submission, which is how our clients land on the right side of the numbers.
Source: MHCLG planning application statistics (householder decisions, rolling year). Compare every borough on our London approval-rate league table.
Hounslow's validation checklist is unforgiving on scales and completeness. Every pack we prepare for the borough includes:
Each affected floor at 1:100 or 1:50, dimensioned and labelled, so a Hounslow officer can read exactly what changes and what is retained.
Every elevation the work touches, materials annotated — officers routinely condition brick and joinery on Chiswick's period streets and the Bedford Park estate.
OS-based, the site edged red and any other land you control edged blue, on a recognised paper size with a north point.
The proposal set against boundaries, neighbouring buildings and trees — decisive where garden amenity or a Thames-side riverside setting is engaged.
Hounslow loft and dormer schemes are usually asked for a roof plan and a section evidencing head heights and the dormer's set-back from the eaves.
Under the Heathrow flight paths, new habitable rooms may need sound-insulation detail; in Strand-on-the-Green or Bedford Park, a proportionate heritage statement drafted alongside the drawings.
A rear extension on a Chiswick terrace, a sensitive alteration inside Bedford Park's Article 4 area, a hip-to-gable loft on a Heston semi, a wraparound in Feltham — we draw to the way Hounslow's case officers actually read a scheme: street character first, neighbour amenity answered on the page.
In Chiswick the everyday work is the Victorian-terrace repertoire: side-return and rear kitchen extensions, rear dormers and the occasional basement. The council reads these streets with particular care — Bedford Park is recognised as the world's first planned garden suburb, and the riverside settings at Strand-on-the-Green and Old Isleworth are among the most sensitive contexts in West London. Daylight to the neighbouring back-addition window is the classic terrace sticking point, and a clean 45-degree line drawn on the proposed elevation settles it before an officer raises it.
West of Brentford the stock turns interwar and post-war: 1930s semis through Osterley, Heston and Cranford, and cottage-estate and post-war family houses across Feltham, Hanworth and Bedfont. Here the common instructions are hip-to-gable and rear-dormer lofts, wraparound extensions and garage conversions, and the officer's concern is usually the roofline and the street pair. A hip-to-gable that unbalances a matched pair draws comment, so we detail the set-down and materials that keep the pair reading as one composition.
One factor is genuinely local: Heathrow. Much of the west of the borough — Cranford, Bedfont, parts of Feltham and Hanworth — sits under the flight paths, and where a scheme creates new bedrooms the council may expect sound-insulation detail to accompany the application. It is a straightforward requirement to satisfy, provided the drawings and specification address it up front rather than in a validation bounce-back.
Send your postcode and project. We score it against live Hounslow decision data and flag conservation-area, Article 4 or Heathrow noise constraints on your specific road.
We measure the property and produce accurate existing plans and elevations — the baseline Hounslow's validation team checks a proposal against first.
Chartered designers draw the scheme to the Hounslow Local Plan, resolving daylight, roofline and riverside-character points on the page rather than in correspondence.
We submit through the Planning Portal, clear validation queries and liaise with your Hounslow case officer across the eight-week determination period.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Hounslow Council decides householder applications for Hounslow, and its recent record and the permitted-development limits that apply here set out below give Chiswick homeowners a realistic starting point before any drawing begins.
| Measure | Figure for Hounslow |
|---|---|
| Hounslow Council householder approval rate | 86% |
| England-wide householder benchmark | 87% |
| Loft dormer permitted-development limit (Class B) | 40m³ terrace / 50m³ semi or detached |
| Single-storey rear extension depth (Class A) | 3m terrace / 4m detached |
| Dominant housing era | Georgian (1714–1837), Victorian (1837–1901), Edwardian (1901–1910), interwar (1918–1939) and postwar (1945–1970) |
| Statutory decision period | 8 weeks |
| Conservation / Article 4 status | Article 4 direction in force; PD removed in Bedford Park, Old Chiswick and Strand-on-the-Green |
Hounslow runs 1 point below the national average. Approval rate: MHCLG householder planning statistics for Hounslow Council; permitted-development limits: GPDO 2015, Schedule 2, Part 1 (Classes A–B).
The statutory period is eight weeks from validation, and most straightforward Hounslow householder applications are decided within it. Cases in the Thames-side or Bedford Park conservation areas, or those needing amendments, can be extended by agreement. We monitor the case and answer officer queries quickly so the clock keeps moving.
It depends on the street. Chiswick carries several of Hounslow's conservation areas, and Bedford Park sits under an Article 4 direction that removes permitted development for windows, doors, roofing and boundary treatments — inside these, scrutiny is closer and PD rights are restricted. Outside them, many single-storey rear extensions still proceed under permitted development. We check your address against the council's designations before drawing anything and recommend a lawful development certificate where PD applies.
It can. Where a scheme creates new bedrooms or habitable rooms under the flight paths across Cranford, Bedfont and parts of Feltham and Hanworth, Hounslow may expect sound-insulation detail with the application. It rarely stops a well-designed scheme — the key is addressing it in the drawings and specification from the start rather than losing weeks to a validation query.
Usually not — most Hounslow loft conversions on the interwar semis of Heston, Osterley and Feltham fall under permitted development where the dormer sits on the rear slope, stays within the volume allowance and is set back from the eaves. You will need permission on flats, in conservation areas, or where earlier conditions removed roof PD rights. Hip-to-gable conversions on matched semis merit careful detailing either way.
A householder application in Hounslow needs existing and proposed floor plans and elevations at 1:100 or 1:50, an OS-based location plan at 1:1250 with the site edged red, and a block plan at 1:500. Loft schemes usually add a roof plan and section, and some schemes near Heathrow add sound-insulation detail. Our packs carry everything on the borough's validation checklist.
Most Hounslow refusals are resolved by targeted amendment — trimming a projection, pulling a dormer back, or reworking a window that overlooks a neighbour. We revise the drawings free of charge and resubmit; a repeat householder application within twelve months of the refusal usually attracts no further council fee.
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