16 Mill Hill, Botley, Southampton, SO30 2GY Data via plota.co.uk

H/26/101986 - Householder Developments Valid
Extensions & alterations

Proposal

Addition of a third dormer to the rear roof elevation, together with associated removal of existing roof windows Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
24 Aug 2026
✓
Validated
4 Sept 2026
Decision
Expected by 30 Oct 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 26 Oct 2026, from Eastleigh's recent extensions.

Comments are open until 16 Oct 2026

Comment on this application ↗

Documents

View the documents on the council's website ↗

Site constraints 9

21 listed buildings within 150 m of the postcode pin
Nearest: 16, MILL HILL (See details for further address information), Grade II, about 2 m from the postcode pin · 21 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 21 with distances
Historic England ↗
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.
Botley conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
National infrastructure project about 905 m away: Hampshire Water Transfer and Water Recycling Project
The site is about 905 m from the project boundary. Dam or reservoir, accepted for examination. Also within 2 km: Southampton to London Pipeline Project (decided, about 1015 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Also on the record
Special protection area about 453 m away: Solent & Southampton Water; SSSI about 453 m away: Upper Hamble Estuary and Woods SSSI; Inside the Botley built-up area; Air quality management area about 2 m away: High Street Botley; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Planning Inspectorate 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.

Sales history 2

Last sold for £875,000 in March 2025. Terraced house, freehold.

26 March 2025£875,000
17 April 2014£575,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area170 m² (1,830 sq ft)
Energy ratingD (60 out of 100), could reach B
PropertySemi-detached house, 7 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in May 2023, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Council
Eastleigh
Application type
Householder Developments
Postcode
SO30 2GY
Received
24 Aug 2026
Validated
4 Sept 2026
Ward
Botley Ward
Parish
Botley CP
Target decision
30 Oct 2026
Decision level
Delegated Decision
Applicant
Show
Agent
ACM Architects Ltd (Alan MacLean)

Decision outlook

Day 35 of the 56-day target. Eastleigh usually decides extensions by day 52.

Day 3521 days to the 56-day target
84%decided within 8 weeks
93%approved
293decided in the last year

Plota live figures for extensions decided by Eastleigh in the last twelve months, from validation. Eastleigh decision record →

Consultation & key dates

Comments by
16 Oct 2026

Historical activity at this location

21 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2024 Approved
Discharge Condition- Condition 3- Material of the planning application L/17/81110- Listed…
DC/24/97198
2023 Approved
Listed Building Consent: Addition of door to listed boundary wall.
L/23/96416
2023 Approved
Listed Building Consent: Addition of door to listed boundary wall.
H/23/95974
2023 Approved
Listed Building Consent: Addition of door to listed boundary wall.
L/23/96416
2023 Approved
Listed Building Consent: Addition of door to listed boundary wall.
H/23/95974
2017 Approved
Listed Building Consent: Demolition of existing dilapidated single storey flat roofed tim…
L/17/81110
2017 Approved
Demolition of existing timber carport and replacement with new single storey flat roofed…
H/17/81056
Within ~100m

Nearby activity

2023 Approved
BOTLEY MILL, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GB
Notification of intent. 1 no. self seeded sycamore tree - fell.
NC/23/95813
2023 Approved
BOTLEY MILL, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GB
Notification of intent. 1 no. self seeded sycamore tree - fell.
NC/23/95813
2022 Approved
BUILDING 12, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GB
New PV panels to Country Store building
F/22/92602
2022 Approved
BUILDING 12, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GB
New PV panels to Country Store building
L/22/92724
2022 Approved
BUILDING 12, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GB
New PV panels to Country Store building
F/22/92602
2022 Approved
BUILDING 12, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GB
New PV panels to Country Store building
L/22/92724
2018 Approved
BOTLEY FLOUR MILLING COMPANY LTD, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GY
Discharge of conditions 3 (Construction Environmental Management Plan), 7 (Archaeological…
DC/18/83649
2018 Approved
BOTLEY FLOUR MILLING COMPANY LTD, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GY
Discharge of conditions 3 (Construction Environmental Management Plan), 7 (Archaeological…
DC/18/83649
2018 Approved
BOTLEY FLOUR MILLING COMPANY LTD, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GY
Replacement of existing boundary wall and repairs to retaining river wall.
L/18/83997
2018 Approved
BOTLEY FLOUR MILLING COMPANY LTD, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GY
Replacement of existing boundary wall and repairs to retaining river wall.
L/18/83997
2018 Refused
13 MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GY
Listed Building consent: Replacement of 7no. windows to front and side.
L/18/82965
2018 Refused
13 MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GY
Listed Building consent: Replacement of 7no. windows to front and side.
L/18/82965
2017 Withdrawn
13 MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GY
Listed building consent: Replacement of existing timber casement windows with new timber…
L/17/80332
2016 Approved
BOTLEY MILL, BOTLEY MILLS, MILL HILL, BOTLEY, SOUTHAMPTON, SO30 2GB
Listed Building Consent: Alterations to existing parking and access arrangements includin…
L/16/78084
Eastleigh
Planning Authority Score
6.8/10
Good
#67 of 296 councils
Relevant to this application:
Householder decisions

Eastleigh is faster than most councils at deciding householder applications, ranking #94 out of 296. Only 27% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Householder applications are slightly more likely to be approved here (92%) than the national average (90%).

Faster than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Eastleigh decision statistics
Based on MHCLG data, the year to March 2026
90%
Overall approval rate
Above avg (87%) #111 of 296
92%
Householder approved
Above avg (90%) #153 of 296
73%
Decided in 8 weeks
Above avg (63%) #94 of 296
27%
Extended time limit
Below avg (41%) #40 of 296
63%
Minor dwellings approved
30 decided (1-9 homes)
67%
Major dwellings approved
9 decided (10+ homes)
91%
Change of use approved
11 decided
547
Total decisions
55 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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.