Mercury House, Brickhill Street, Willen Lake, Milton Keynes, MK15 0DJ Data via plota.co.uk

PLN/2026/1340 - Prior approval Part 3 Class MA Approved

Proposal

Prior approval for the proposed change of use from Commercial, Business and Service (Use Class E) to Dwellinghouses (83 units) (Use Class C3) Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
24 Jun 2026
✓
Validated
26 Aug 2026
✓
Approved
20 Oct 2026

Approved on 20 Oct 2026 · Delegated Decision · Last checked 20 Oct 2026

Documents 36

Statements & assessments 15

PDF Flood Risk Assessment - appendix A APPFLOOD - Flood Risk · 10 Sept 2026 View ↗ PDF Flood Risk Assessment - Appendix D APPFLOOD - Flood Risk · 10 Sept 2026 View ↗ PDF Flood Risk Assessment - Appendix C APPFLOOD - Flood Risk · 10 Sept 2026 View ↗ PDF Flood Risk Assessment - Appendix B APPFLOOD - Flood Risk · 10 Sept 2026 View ↗ PDF Flood Risk Assessment - Appendix E APPFLOOD - Flood Risk · 10 Sept 2026 View ↗ PDF Flood Risk Assessment - Appendix F APPFLOOD - Flood Risk · 10 Sept 2026 View ↗ PDF Nationally Described Space Standards (NDSS) Compliance Statement APPSUPP - Other Supporting Documents/Information · 27 Aug 2026 View ↗ PDF P25-394sca - Site Contamination Risk Assessment APPSUPP - Other Supporting Documents/Information · 12 Aug 2026 View ↗ PDF Daylight and Sunlight Assessment APPSUPP - Other Supporting Documents/Information · 12 Aug 2026 View ↗ PDF Transport Statement June 2026 APPTRANS - Transport Assessments and Plans · 12 Aug 2026 View ↗ PDF Flood Risk Assessment APPFLOOD - Flood Risk · 12 Aug 2026 View ↗ PDF Noise Impact Assessment APPNOISE - Noise Assessment · 12 Aug 2026 View ↗ PDF P25-394rms - Remediation Method Statement APPSUPP - Other Supporting Documents/Information · 12 Aug 2026 View ↗ PDF PLN/2026/0219 - approval of contamination condition 4 APPSUPP - Other Supporting Documents/Information · 12 Aug 2026 View ↗ PDF Cover Letter / Planning Statement APPSUPP - Other Supporting Documents/Information · 24 Jun 2026 View ↗

Plans & drawings 16

PDF JW1242 107 PL 07 - Proposed Second Floor Plan APPFLR2 - Second floor plan · 16 Oct 2026 View ↗ PDF JW1242 106 PL 07 - Proposed First Floor Plan APPFLR1 - First Floor Plan · 16 Oct 2026 View ↗ PDF JW1242 105 PL 07 - Proposed Ground Floor Plan APPFLRG - Ground Floor Plans · 16 Oct 2026 View ↗ PDF 100 Rev 05 - Location Plan - Existing and Proposed Site Plan PLAN-ALL - Plans that contain 2 or more plan types · 27 Aug 2026 View ↗ PDF 113 Rev 05 - Existing and proposed sections APPSECT - Application Sections · 27 Aug 2026 View ↗ PDF 110 Rev 06 - Existing and proposed North and East elevations PLAN-ALL - Plans that contain 2 or more plan types · 27 Aug 2026 View ↗ PDF 104 Rev 06 - Existing and proposed roof plan PLAN-ALL - Plans that contain 2 or more plan types · 27 Aug 2026 View ↗ PDF 103 Rev 05 - Existing Second Floor Plan APPEXIST - Existing Floor Plans · 27 Aug 2026 View ↗ PDF 102 Rev 05 - Existing First Floor Plan APPEXIST - Existing Floor Plans · 27 Aug 2026 View ↗ PDF 101 Rev 05 - Existing Ground Floor Plan APPEXIST - Existing Floor Plans · 27 Aug 2026 View ↗ PDF 109 Rev 06 - Existing and proposed south and west elevations PLAN-ALL - Plans that contain 2 or more plan types · 27 Aug 2026 View ↗ PDF 107 Rev 06 - Proposed Second Floor Plan APPROPO - Proposed Floor Plans · 27 Aug 2026 View ↗ PDF 106 Rev 06 - Proposed First Floor Plan APPROPO - Proposed Floor Plans · 27 Aug 2026 View ↗ PDF 105 Rev 06 - Proposed Ground Floor Plan APPROPO - Proposed Floor Plans · 27 Aug 2026 View ↗ PDF 108 Rev 05 - Approved roof plan (PLN/2026/0657) APPROOF - Roof Plans · 12 Aug 2026 View ↗ PDF Appendix A Site Location Maps APPLOCA - Site/Location Plans · 24 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 6

2 Article 4 directions
Article 4 Direction relating to Houses in Multiple Occupation (HIMO) - Non immediate direction · Article 4 Direction relating to Houses in Multiple Occupation (HIMO) - Immediate direction. 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.
Tree preservation order
Consent is needed before work on protected trees.
Not every council has published its orders as open data, so no order shown is not proof there is none.
Also on the record
Radon affected area, class 2; National infrastructure project about 422 m away: The Grand Union Canal Transfer, at pre-application; Priority habitat about 17 m away: Deciduous woodland; 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, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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 1

Last sold for £7,200,000 in March 2022. Other property, freehold.

15 March 2022£7,200,000Recorded as a transfer outside a standard sale

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

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Important details

Application type
Prior approval Part 3 Class MA
Postcode
MK15 0DJ
Received
24 Jun 2026
Validated
26 Aug 2026
Ward
Campbell Park & Willen
Parish
Campbell Park
Case officer
Show
Target decision
21 Oct 2026
Decision
Approved with Conditions
Decision date
20 Oct 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Allen Planning Ltd - Mr Tony Allen
Freehold owner
Show

How this decision compares

Decided in 55 days from validation, about the council's usual 56 days. Approved, as 71% of changes of use here are.

59%decided within 8 weeks
71%approved
86decided in the last year

Plota live figures for changes of use decided by Milton Keynes in the last twelve months, from validation. Milton Keynes decision record →

Public comments

6comments received
6 neutral

Last counted 20 Oct 2026

Read the comments on the council site ↗

Milton Keynes
Planning Authority Score
7.1/10
Good
#59 of 296 councils
Relevant to this application:
Change of use

Milton Keynes is faster than most councils at deciding householder applications, ranking #52 out of 296. Only 28% 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
Milton Keynes decision statistics
Based on MHCLG data, the year to March 2026
88%
Overall approval rate
Above avg (87%) #156 of 296
92%
Householder approved
Above avg (90%) #159 of 296
78%
Decided in 8 weeks
Above avg (63%) #52 of 296
28%
Extended time limit
Below avg (41%) #45 of 296
55%
Minor dwellings approved
66 decided (1-9 homes)
83%
Major dwellings approved
23 decided (10+ homes)
71%
Change of use approved
49 decided
1,088
Total decisions
134 refused in the year to March 2026

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

Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.