Planning Drawings in Hillingdon
Fixed-fee, MCIAT-chartered planning drawings for Hillingdon homeowners — London Borough of Hillingdon validation and local constraints handled from the start.
Hillingdon is Metro-land in built form: rows of interwar semi-detached and detached houses across Ruislip, Eastcote and Ickenham that lend themselves to hip-to-gable and dormer loft conversions and rear extensions, set against the historic timber-framed core of Ruislip Village and the Colne Valley green belt to the west. These abundant Metro-land semis often retain fuller permitted development rights than inner-London terraces, so a loft or single-storey rear frequently qualifies within the volume limits, though the right route always depends on the plot and its designation.
Unlike much of London, the London Borough of Hillingdon has no borough-wide Article 4 direction affecting typical householder permitted development. The binding constraints are different: Colne Valley green-belt policy toward the western edge and Harefield restricts scale, assessing extensions against strict limits on disproportionate additions to the original dwelling. Conservation control applies in Ruislip Village, Uxbridge (Windsor Street), Northwood, Ickenham Village, Harefield and Eastcote, where permitted development is removed. Toward the south of the borough near Heathrow, aircraft-noise considerations can influence habitable-room and glazing design and need evidencing within the application.
We prepare Hillingdon planning drawings that respect the established Metro-land building line the council expects, checking permitted development eligibility for semi-detached and detached homes first and flagging any conservation, green-belt or aircraft-noise constraint for your address. You get a fixed fee agreed up front, the same council-accepted drawings an architect would produce for usually around 30% less, a roughly seven-day drawing turnaround and free redraws until Hillingdon approves. Most householder applications are determined within the statutory eight weeks once validated, so we work to the council's validation checklist to head off the queries that cause delay.
Planning in Hillingdon: what to know before you apply
Hillingdon has no borough-wide Article 4 direction affecting typical householder permitted development; the binding constraints are Colne Valley green-belt policy to the west, conservation-area control in Ruislip, Uxbridge, Ickenham and Northwood, and aircraft-noise considerations near Heathrow to the south. The borough's abundant Metro-land semis often retain fuller permitted development rights than inner-London terraces.
Typical Hillingdon housing stock
Metro-land interwar semi-detached and detached houses across Ruislip, Eastcote and Ickenham, the historic timber-framed core of Ruislip Village, and green-belt and edge-of-London properties toward Harefield and the Colne Valley.
Areas we regularly draw for in Hillingdon
Uxbridge · Ruislip · Hayes · Hillingdon · Northwood · Ickenham · Eastcote · West Drayton
What the numbers say about Hillingdon planning decisions
These are London Borough of Hillingdon’s own reported figures, published by government rather than estimated by us. They are what we design against — a borough that refuses one householder application in five needs a different drawing package from one that refuses one in twenty.
Householder decisions in Hillingdon
Every householder application London Borough of Hillingdon decided over the four quarters to 2026 Q1.
| Householder applications decided | 1,184 |
|---|---|
| Granted | 1,068 |
| Refused | 116 |
| GrantedEngland average 90% | 90% |
| Of which prior approvalsPrior approvals are granted far more often than full applications, so this share moves the rate above | 39% |
| Decided within 8 weeksExcludes prior approvals. England average 93% | 95% |
Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-08-16.
Permitted development in Hillingdon
Larger householder extensions put to London Borough of Hillingdon under the prior-approval route, and lawful-development certificates decided, over eight quarters.
| Prior approval not requiredWent ahead without a full application | 235 |
|---|---|
| Prior approval granted | 58 |
| Prior approval refused | 23 |
| Granted where a decision was neededFrom 81 determinations | 72% |
| Building upwards, prior approval refused | 0 |
| Certificates of lawful development decided | 1,146 |
Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-08-16.
Designated areas in Hillingdon
Conservation areas London Borough of Hillingdon has published to the national register, and when it designated them. Where a borough has supplied no Article 4 data the row is omitted rather than shown as zero.
| Conservation areas on the register | 42 |
|---|---|
| First designatedOf the 30 whose designation date the register records | 1,970 |
| Most recent designation | 2,024 |
| Article 4 directions in force | 150 |
Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-08-16.
If London Borough of Hillingdon refuses: appeal outcomes
Planning appeals against London Borough of Hillingdon determined by the Planning Inspectorate, 2021–2026. Enforcement notices and withdrawn cases are excluded.
| Appeals determined | 812 |
|---|---|
| Allowed | 286 |
| Dismissed | 526 |
| Householder appeals allowedFrom 430 householder appeals. England average 36% | 43% |
Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-08-16.
Planning Drawings for Hillingdon homes: the package and the process
A planning set is judged as a set, not as individual sheets. Every existing drawing needs its proposed counterpart at the same scale and orientation so the officer can read the change at a glance, each sheet needs its own number, title, scale bar and north point, and the whole package needs to survive being printed at A3 without a dimension becoming illegible.
We draw to the conventions validation teams expect: plans and elevations at 1:100 or 1:50, a location plan at 1:1250 with the site edged red, a block plan at 1:500, and sections cut where the change in level or roof form actually happens rather than where they are easiest to draw.
The drawing list itself changes with the building. A detached house needs four elevations; a mid-terrace needs two plus a section through the party walls to show what is not visible from outside. Getting that list right at the start is what stops a validation officer asking for a sheet three weeks in.
What is included in a planning drawing set?
A council will only validate an application that contains the right drawings at the right scale. Our standard planning set covers everything a London validation team expects.
- Site location plan (1:1250) and block plan (1:500)
- Existing floor plans, elevations and sections
- Proposed floor plans, elevations and sections
- Roof plans where relevant, with heights and materials annotated
- A design and access or heritage statement where the borough requires one
How are planning drawings different from building regulations drawings?
Planning drawings show what the building will look like and how it sits in its context. Building regulations drawings show how it will be built safely — structure, insulation, fire escape and drainage. Most projects need both; our Complete package covers the two together with structural calculations coordinated in-house.
How quickly can you produce planning drawings in London?
After a laser survey, a standard householder set is typically ready within 7 days. We review every drawing against your borough's validation checklist before it reaches a planner's desk, which is why our first-time approval rate sits around 96%.
| Drawing | Typical scale | What it shows |
|---|---|---|
| Site location plan | 1:1250 | The property in its street context, site edged red |
| Block plan | 1:500 | The building's footprint and position in the plot |
| Floor plans (existing & proposed) | 1:100 / 1:50 | Room layout, walls, openings and the proposed changes |
| Elevations (existing & proposed) | 1:100 / 1:50 | Each face of the building and how it changes |
| Sections | 1:100 / 1:50 | A cut through showing heights, levels and roof form |
Planning Drawings in Hillingdon — FAQs
What scale should London planning drawings be?+
Do I need an architect to produce planning drawings?+
How many revisions are included in the fee?+
Can you draw from my existing plans?+
Do planning drawings guarantee approval?+
Do I need planning permission for a loft conversion in Hillingdon?+
How does the Colne Valley green belt affect my Hillingdon project?+
Does proximity to Heathrow affect my plans?+
How long does Hillingdon Council take to decide?+
How much do planning drawings cost in Hillingdon?+
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