101 Cranbury Avenue and 101A Lyon Street St Marys Southampton SO14 0LY Data via plota.co.uk

25/00343/ELDC - Lawful Devt Certificate Existing Use Awaiting decision

Proposal

Application for a lawful development certificate for the existing use as 2 x 2-bedroom dwellings. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
around 17 Mar 2025
✓
Consultation
16 Apr 2025
Decision
Target date was 12 May 2025

Under consideration

No decision has been issued yet. Plota predicted a decision around 29 Oct 2026; it is now day 591.

The consultation period closed on 7 May 2025.

Documents 2

Application forms 1

PDF APPLICATION FORM - WITHOUT PERSONAL DATA Application Form · 17 Mar 2025 View ↗

Other documents 1

IMG 28/04/25 Site Notice · 29 Apr 2025 View ↗

All documents on the council site ↗

Site constraints 6

Nutrient neutrality catchment: Solent: Includes Chichester and Langstone Harbours SPA/Ramsar, Solent and Southampton Water SPA/Ramsar, Solent Maritime SAC, Portsmouth Harbour SPA/Ramsar
New homes and overnight accommodation must show nutrient neutrality before approval.
Natural England advice: extra wastewater in these catchments harms protected habitats, so schemes must offset their nutrient load, usually through credits.
Article 4 direction
HMO. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Also on the record
Special protection area 332 m away: Solent and Dorset Coast; SSSI 437 m away: Lee-on-The Solent to Itchen Estuary SSSI; 1 listed building within 150 m; Inside the Southampton built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 18 October 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.

Building

Floor area81 m² (872 sq ft)
Energy ratingD (65 out of 100), could reach B
PropertyEnclosed end-terrace house, 3 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, no insulation (assumed)

From the energy performance certificate lodged in July 2023, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Southampton
Application type
Lawful Devt Certificate Existing Use
Postcode
SO14 0LS
Received
around 17 Mar 2025
Validated
17 Mar 2025
Ward
Bevois
Case officer
Show
Target decision
12 May 2025
Applicant
Show
Agent
ACA Design Limited

Decision outlook

Day 591, past the statutory target. 89% of lawful development certificates in Southampton are decided within thirteen weeks; extensions of time are common, and the council need not decide on the day. Last seen undecided on 25 Oct 2026.

Day 591535 days past the 56-day target
59%decided within 8 weeks
96%approved
91decided in the last year

Plota live figures for lawful development certificates decided by Southampton in the last twelve months, from validation. Southampton decision record →

Public comments

No public comments yet.

18 neighbours consulted · Last counted 25 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
9940
Neighbours
16 Apr 2025
Consultation
16 Apr 2025
Comments by
7 May 2025
Statutory expiry
12 May 2025
Env. assessment
No

Historical activity at this location

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

Within ~100m

Nearby activity

2024 Refused
101 Cranbury Avenue Southampton City Of Southampton SO14 0LS
Conversion of existing two bedroom dwelling to 2 x one bedroom flats with associated bin…
24/01069/FUL
2023 Withdrawn
101 Lyon Street Southampton SO14 0LY
Conversion of existing garage into a 1-bedroom house
23/01460/FUL
2022 Approved
69 Cranbury Avenue Southampton SO14 0LS
Two storey flat roof rear extension with changes to fenestration, and dormer window to fa…
22/01338/FUL
2022 Approved
68 Cranbury Avenue Southampton SO14 0LT
Replacement windows and doors to existing flats
22/01367/FUL
2022 Approved
71 Cranbury Avenue Southampton SO14 0LS
Erection of a part 2-storey, part single storey rear extension and installation of rear d…
22/01228/FUL
2021 Approved
140 Lyon Street Southampton SO14 0LZ
Erection of First Floor Rear Extension (resubmission of planning ref: 20/01344/FUL)
21/00063/FUL
2021 Refused
153 Derby Road Southampton SO14 0DW
Change of use from HMO to 2 x 2 bed flats including single storey rear extension (resubmi…
21/00066/FUL
2020 Approved
Kataria House Lyon Street Southampton SO14 0LY
Removal of condition 6 to planning permission 09/00878/FUL to enable conversion of garage…
20/01669/FUL
2020 Refused
153 Derby Road Southampton SO14 0DW
Change of use from HMO to 2 x 3 bed flats (C3 use) and external alterations.
20/01517/FUL
2020 Withdrawn
140 Lyon Street Southampton SO14 0LZ
Erection of a first floor rear extension
20/01344/FUL
2020 Approved
59 Cranbury Avenue Southampton SO14 0LS
Erection of a 1 x 2 bed dwelling house with associated bin and cycle storage following th…
20/00913/FUL
2020 Approved
Land to rear of 59 and 61 Cranbury Avenue Southampton SO14 0LS
Erection of a two storey building containing 2 x 1 bed flats with associated cycle/refuse…
20/00080/FUL
2019 Refused
31 Alfred Street Southampton SO14 0NB
Change of use from a dwelling house (class C3) to a house in multiple occupation (HMO, cl…
19/01871/FUL
2019 Refused
165 Derby Road Southampton SO14 0DX
Erection of a part 2-storey, part single storey side/rear extension to create a 1-bed hou…
19/01135/FUL
2019 Approved
89 Lyon Street Southampton SO14 0LY
Erection of a two storey one bed dwelling with refuse and cycle storage following demolit…
19/01357/FUL
2019 Approved
165 Derby Road Southampton SO14 0DX
Erection of a part 2-storey, part single storey side/rear extension
19/00632/FUL
2018 Approved
Land adjacent 75 - 77 Lyon Street Southampton SO14 0LY
Erection of a two bedroom dwelling with cycle and refuse storage
18/02246/FUL
2018 Refused
89 Lyon Street Southampton SO14 0LY
Erection of a two storey building to provide 1x 2-bed dwelling following demolition of ex…
18/02042/FUL
2018 Refused
89 Lyon Street Southampton SO14 0LY
Erection of a two storey building to provide 2 x one bed flats following demolition of ex…
18/00902/FUL
2017 Approved
43 Cranbury Avenue Southampton SO14 0LS
Erection of a part single, part two storey rear extension with rear dormer windows and ro…
17/01558/FUL
2017 Refused
Flat 1 137 Derby Road Southampton SO14 0DU
Conversion of part of ground floor into a 1 x 1 bed flat (Retrospective).
17/00461/FUL
2017 Refused
Land adjacent 75 - 77 Lyon Street Southampton SO14 0LY
Erection of 2x 2-bed semi detached houses with associated cycle/refuse storage. (resubmis…
17/00491/FUL
2017 Refused
Land adjacent 75 - 77 Lyon Street Southampton SO14 0LY
Erection of a 3 - storey building (including rooms in roof) to create 3 x studio flats wi…
16/02131/FUL
2016 Approved
Rear of 59 - 61 Cranbury Avenue Southampton SO14 0LS
Erection of a two storey building containing 2 x 1 bed flats with associated cycle/refuse…
16/01643/FUL
2016 Approved
98 Cranbury Avenue Southampton SO14 0LT
Erection of two-storey front and rear extensions to allow conversion of existing house in…
15/02440/FUL
Southampton
Planning Authority Score
5/10
Average
#150 of 296 councils
Relevant to this application:
Householder decisions

Southampton ranks #158 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (93%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance
Southampton decision statistics
Based on MHCLG data, the year to March 2026
90%
Overall approval rate
Above avg (87%) #117 of 296
93%
Householder approved
Above avg (90%) #137 of 296
63%
Decided in 8 weeks
Above avg (63%) #158 of 296
40%
Extended time limit
Below avg (41%) #154 of 296
70%
Minor dwellings approved
50 decided (1-9 homes)
100%
Major dwellings approved
8 decided (10+ homes)
86%
Change of use approved
109 decided
742
Total decisions
72 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.