The short answer for Queensbury
Planning authority
Harrow or Brent, by address
Postcode district
HA3, HA7, HA8 and NW9
Conservation areas
One, in Brent only
Suburb dates from
1934, with the station
Not sure you are in Queensbury? Check your area
Yes, we cover Queensbury. The Underground station that opened in 1934 for the new suburb is in Brent, but the Queensbury Circle parades are in Harrow, so which council decides depends on your street. Harrow's own study says there was no settlement here before the station and that the name was chosen to complement Kingsbury. The one conservation area in the Brent half is Roe Green Village, begun in 1918 and so older than the suburb round it, and Harrow lists none on its side. Postcodes do not settle it either: HA3, HA7, HA8 and NW9 all reach Queensbury, and HA7 and HA8 cover addresses in both boroughs. We establish which council your address falls under before we quote, because the guidance is different on each side.
Wall mounted systems start from £1,995 fully installed, and the price does not change with the postcode.
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Who decides, place by place
We tested a point on each of these against the ONS local authority boundaries. Your own address is what counts, but this shows how Queensbury divides.
| Place in Queensbury | Council that decides |
|---|---|
| Queensbury station and Station Parade | Brent |
| Roe Green Village, around Roe Lane | Brent |
| Queensbury Circle and the parades round it | Harrow |
| Streatfield Road and Kenmore Road | Harrow |
| Mollison Way | Harrow |
| Honeypot Lane | Both, depending on the stretch |
Point tested against the ONS Local Authority Districts boundaries, May 2026. Harrow's own character study treats the Circle centre and Queensbury Station Parade as two different places, and says the Parade is in Brent.
A suburb with no history before its station
Harrow Council's character study says Queensbury station opened in 1934 with no existing nearby settlement, and that the name was chosen to complement Kingsbury. Brent's archive history of the Stanmore line agrees: the railway built a bridge for a planned new suburb that was to be called Queensbury, and London Transport opened the station for it.
Harrow describes what followed as large, comprehensively laid out estates and parades of shops at the Circle. There was no older village here to designate, and on the Harrow side nothing has been.
The one conservation area is older than Queensbury
Brent's own appraisal places Roe Green Village in the Queensbury ward. Plans were drawn in 1916, building began in 1918 to house aircraft workers, and in November 1968 it became the first conservation area Brent designated. It covers seven streets: Bacon Lane, Goldsmith Lane, Roe End, Roe Lane, Scudamore Lane, Shortscroft and part of Stag Lane. Brent's current Article 4 direction, in force from 1 August 2024, removes permitted development under Part 1, Part 2, Part 11 and Part 14. Its Part 14 list is Classes A, D and H, which are solar equipment, water source heat pumps and wind turbines. Class G, the class for air source heat pumps, is not on it.
What the housing actually is
Households by accommodation type at the 2021 Census, for the three wards that take in Queensbury addresses. Semi detached is the largest group in all three.
| Ward | Households | Detached | Semi-detached | Terraced | Purpose built flats |
|---|---|---|---|---|---|
| Queensbury, Brent | 5,386 | 294 | 2,297 | 1,055 | 1,387 |
| Centenary, Harrow | 4,729 | 258 | 2,817 | 418 | 974 |
| Kenton East, Harrow | 4,180 | 202 | 1,523 | 1,404 | 685 |
ONS Census 2021, table TS044, accommodation type by household, as at 21 March 2021, on the 2022 ward boundaries. Only the categories ONS publishes are shown; the remaining households are in converted or shared houses, other converted buildings, commercial buildings or temporary structures. Centenary and Kenton East also take in streets that are not Queensbury, and Brent's Queensbury ward includes Roe Green Village.
What applies to you
A house on the Harrow side
We found no conservation area and no Local Area of Special Character in Harrow's part of Queensbury, and Harrow's 2010 residential design guide does not mention air conditioning or heat pumps. A wall mounted system is permitted development subject to the national limits. Condenser on a side or rear elevation, with the pipe run inside the three metres included in the starting price.
A house on the Brent side, outside Roe Green
Also permitted development, but Brent's adopted extensions guidance applies because no conservation area displaces it. It welcomes air source heat pumps, says they should not go in a small space such as a side return, and calls one above ground floor on a front or side wall seen from the street generally unacceptable. We design to that from the start.
Inside Roe Green Village
The conservation area rules and Brent's Article 4 direction govern, and Brent's extensions guidance expressly does not cover conservation areas. The condenser goes to the rear, away from the street. Brent can make further directions, so check its policies map, and we will tell you at the survey if your address is in the schedule.
A flat above a parade, or a maisonette
Harrow's study describes the three storey parades at Queensbury Circle as having flats reached by communal stairs and balconies at the front, and notes larger areas of maisonettes along Honeypot Lane. In either, the freeholder's written consent comes before planning. Above the first floor, expect a condensate pump, priced as a line on the quote.
A listed building
Brent's Queensbury ward has four listed entries, all Grade II: Kingsbury Manor and the summerhouse beside it, a K6 telephone kiosk and the Mecca Bingo Club. Permitted development does not apply within the curtilage of a listed building.
You are a business
Permitted development for air source heat pumps covers dwellinghouses and blocks of flats, not commercial premises, so an application is likely, to Harrow or to Brent depending on the side. Our commercial page covers how we handle those, and we will give you the unit dimensions and position for the form.
Your planning authority is London Borough of Brent
They decide any application for your address, and they publish the conservation area maps you would need to check it. We do not submit applications on your behalf, but we will tell you at the survey if one is likely and give you the unit dimensions and position to put on the form.
London Borough of Brent conservation areasWhat we would fit in Queensbury
Every price is fully installed and includes the unit, the installation, the electrical work and VAT.
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