78 Tregenna Avenue, South Harrow, Harrow, HA2 8QS Data via plota.co.uk

Decided PL/1330/26 - Prior Notification - Larger Home Extension
Extensions & alterations
Council
Harrow 4.9/10
Date received
30 May 2026
Postcode
HA2 8QS
Type
Prior Notification - Larger Home Extension

Description

Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.70 metres high to the eaves Data via plota.co.uk

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Last checked

Site constraints 2

Air quality management area: Harrow AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Also on the record
Inside the Harrow built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Other new applications on this street

29 Jul 2026Pending

33 Tregenna Avenue, South Harrow, Harrow, HA2 8QH

Single storey rear extension; front porch; external alterations

PL/2000/26

Nearby new applications

12 Sept 2026Pending

Harrow Independent College, 308 - 310 Eastcote Lane, Harrow, HA2 9AH

Change of use and conversion of the rear parts of 308 and 310 Eastcote Lane from...

PL/2388/26
9 Sept 2026Pending

51 Kings Road, South Harrow, Harrow, HA2 9JA

First-floor side and rear extension, including extension of the existing hipped ...

PL/2337/26
14 Aug 2026Refused

102 Carlyon Avenue, South Harrow, Harrow, HA2 8SY

Change of use from HMO C4 to Sui Generis (Large HMO)

PL/1593/26
8 Aug 2026Pending

81 Kings Road, South Harrow, Harrow, HA2 9JG

Proposed boundary wall with metal grills and metal gates to front

PL/2080/26
30 Jul 2026Pending

70 Park Lane, South Harrow, Harrow, HA2 8NG

Change of use from dwelling (use class C3) to to a children's home for up to thr...

PL/2006/26
29 Jul 2026Pending

33 Tregenna Avenue, South Harrow, Harrow, HA2 8QH

Single storey rear extension; front porch; external alterations

PL/2000/26

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025
84 Balmoral Road, South Harrow, Harrow, HA2 8TB
Alterations to roof to form end gable and rear dormer, window in gable end, roof lights i…
PL/1973/25
2025 Approved
73 Tregenna Avenue, South Harrow, Harrow, HA2 8QP
Single storey rear extension: 6.00 metres deep, 3.40 metres maximum height and 3.00 metre…
PL/0243/25
2024 Approved
75 Tregenna Avenue, South Harrow, Harrow, HA2 8QP
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metre…
PL/0267/24
2023 Approved
58 Balmoral Road, South Harrow, Harrow, HA2 8TB
Single storey rear extension: 6.00 metres deep, 3.71 metres maximum height and 3.00 metre…
P/1331/23/PRIOR
2022 Approved
59 Tregenna Avenue, South Harrow, Harrow, HA2 8QP
Single Storey Rear Extension: 6.00 metres deep, 3.00 metres maximum height, 3.00 metres h…
P/1069/22/PRIOR
2021 Approved
107 Tregenna Avenue, South Harrow, Harrow, HA2 8QR
Single Storey Rear Extension: 6.00 metres deep, 3.27 metres maximum height, 3.00 metres h…
P/2302/21/PRIOR
2021 Approved
44 Tregenna Avenue, South Harrow, Harrow, HA2 8QS
Single storey front extension incorporating front porch; single and two storey side exten…
P/1625/21
2021 Approved
44 Tregenna Avenue, South Harrow, Harrow, HA2 8QS
Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 3.00 metre…
P/0945/21/PRIOR
2019 Withdrawn
70 Tregenna Avenue, South Harrow, Harrow, HA2 8QS
Single Storey Rear Extension: 6 metres deep, 3 metres maximum height, 3 metres high to th…
P/0473/19/PRIOR
2019 Approved
70 Tregenna Avenue, South Harrow, Harrow, HA2 8QS
Single Storey Rear Extension: 6 metres deep, 3 metres maximum height, 3 metres high to th…
P/0513/19/PRIOR
2018 Approved
74 Balmoral Road, Harrow, HA2 8TB
Single storey rear extension: 6 metres deep 3.1 Metres maximum height 2.6 Metres high to…
P/4659/18/PRIOR
2017 Approved
109 Tregenna Avenue, Harrow, HA2 8QR
Single storey rear extension: extending 5.5 Metres beyond the original rear wall 3 metres…
P/3417/17/PRIOR
2017 Withdrawn
109 Tregenna Avenue, South Harrow, Harrow, HA2 8QR
Single Storey Rear Extension: extending 5.5 metres beyond the original rear wall, 3 metre…
P/3035/17
2016 Approved
56 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension
P/4853/16
2016 Approved
52 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension: extending 6 metres beyond the original rear wall 3.7 Metres…
P/4917/16
2016 Withdrawn
52 Tregenna Avenue, South Harrow, Harrow, HA2 8QS
WITHDRAWN - Single Storey Rear Extension: extending 6 metres beyond the original rear wal…
P/4439/16
2016 Approved
56 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension: extending 4.5 Metres beyond the original rear wall 3 metres…
P/3869/16
2016 Approved
52 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension: extending 6 metres beyond the original rear wall 3.93 Metre…
P/3905/16
2016 Approved
56 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension: extending 4.5 Metres beyond the original rear wall 3 metres…
P/2539/16
2016 Approved
56 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension: extending 4.5 Metres beyond the original rear wall 3 metres…
P/2347/16
2016 Approved
56 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension: extending 4.5 Metres beyond the original rear wall 3 metres…
P/2087/16
2016 Approved
56 Tregenna Avenue, Harrow, HA2 8QS
Single storey rear extension: extending 6 metres beyond the original rear wall 3 metres m…
P/1387/16
2016 Approved
42 Tregenna Avenue, Harrow, HA2 8QS
Single storey front extension incorporating front porch two storey side extension single…
P/0004/16
2025 Approved
73 Tregenna Avenue, South Harrow, Harrow, HA2 8QP
Certificate of Lawful Development (Proposed): Alterations to roof; rear dormer; three roo…
PL/0255/25
2024 Approved
56 Tregenna Avenue, South Harrow, Harrow, HA2 8QS
Certificate of Lawful Development (Proposed): Erection of a flat roof rear dormer, hip to…
PL/3318/24
Harrow
Planning Authority Score
4.9/10
Below average
#153 of 296 councils
Relevant to this application:
Householder decisions

Harrow ranks #115 out of 296 councils for householder decision speed. Harrow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 83% approved vs 90% nationally.

One of the strictest councils
only 83% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Harrow decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #273 of 296
83%
Householder approved
Below avg (90%) #261 of 296
71%
Decided in 8 weeks
Above avg (63%) #115 of 296
33%
Extended time limit
Below avg (41%) #77 of 296
44%
Minor dwellings approved
133 decided (1-9 homes)
80%
Major dwellings approved
5 decided (10+ homes)
38%
Change of use approved
26 decided
1,330
Total decisions
298 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings