Areas / Hillingdon / HA6
Architects in HA6
Northwood and Moor Park. Larger detached and semi-detached houses, some in conservation areas.
RIBA Chartered Practice · ARB-registered architects · Extensions, lofts and planning drawings
Planning authority
Which council decides in HA6?
All of HA6 is in Hillingdon, so Hillingdon decides planning applications here. 525 postcodes, 9.4 miles from our studio.
| Council | Share of HA6 postcodes |
|---|---|
| Hillingdon | 100% (525) |
By postcode sector
| Sector | Postcodes | Council |
|---|---|---|
| HA6 1 | 214 | Hillingdon |
| HA6 2 | 223 | Hillingdon |
| HA6 3 | 75 | Hillingdon |
| HA6 9 | 13 | Hillingdon |
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Type any postcode in the 33 London boroughs we cover. We'll tell you which council handles planning there and show you the local planning points.
Local planning points
If your home is in Hillingdon
Householder extensions are assessed against Local Plan Part 2 policy DMHD 1, Alterations and Extensions to Residential Dwellings (adopted January 2020).
SourceConverting a house into flats needs an original internal floor area of at least 120 sq m, one unit per floor, and no more than 10% of a street converted (policy DMH 4).
SourceA borough-wide Article 4 direction has required planning permission for small HMOs since 11 December 2025.
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