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Planning applications in MK3

We hold 83 planning applications for the MK3 postcode area, 63 of them submitted in the past year. 84% of decided applications here were approved. A decision typically takes 56 days. The area is covered by Milton Keynes, Buckinghamshire, Aylesbury Vale.

83
applications held
63
in the past year
84%
approved
56 days
median decision

Towns and villages in MK3

Councils covering MK3

Milton Keynes (78)Buckinghamshire (3)Aylesbury Vale (2)

Recent applications in MK3

Undecided
Prior approval: Commercial, business and service uses to dwellinghouses
21 Sept 2026PLN/2026/1918
74 Church Green Road, Bletchley, MK3 6BYMilton Keynes

Prior approval for the change of use from day nursery ((Class E)(f)) to a dwelling house (Class C3).

Undecided
Outline planning permission: Some matters reserved
14 Sept 2026PLN/2026/1075
REDHOUSE, TATTENHOE LANE, BLETCHLEY, MILTON KEYNES, MK3 7RBMilton Keynes

Outline application (matters of layout and scale to be considered, with matters of access, appearance and landscaping reserved) for erection of two storey extensions, single storey extension and balcony, pergola and garage/ancillary block

Undecided
Approval of details reserved by a condition
11 Sept 2026PLN/2026/1906
68 WHITELEY CRESCENT, BLETCHLEY, MILTON KEYNES, MK3 5DGMilton Keynes

Approval of details required by condition 3 (surface water drainage) of permission ref. PLN/2024/2728

Undecided
Notification of proposed works to trees in a conservation area
9 Sept 2026PLN/2026/1863
THE OLD RECTORY, CHURCH GREEN ROAD, BLETCHLEY, MILTON KEYNES, MK3 6BJMilton Keynes

Removal of Horse Chestnut (T16) and Sycamore (T24), and removal of dead section of subdominant limb to east over public footpath of Horse Chestnut (T17)

Undecided
Householder planning permission
7 Sept 2026PLN/2026/1682
21 BUTE BRAE, BLETCHLEY, MILTON KEYNES, MK3 7TAMilton Keynes

Proposed single story extension at rear, two story extension side, front porch

Undecided
Householder planning permission
4 Sept 2026PLN/2026/1776
18 LUNDY WALK, NEWTON LEYS, MILTON KEYNES, MK3 5FHMilton Keynes

Installation of 2no. air conditioning units and 1no. Air Source Heat Pump unit to existing property

Undecided
Lawful development certificate (proposed)
3 Sept 2026PLN/2026/1854
6 ST CATHERINES AVENUE, BLETCHLEY, MILTON KEYNES, MK3 5EEMilton Keynes

Certificate of lawfulness for the proposed loft conversion including the installation of 2no. rooflights to the front roof slope and 2no. rooflights to the rear roof slope

Undecided
Prior approval: Larger home extension
2 Sept 2026PLN/2026/1783
8 LUDLOW CLOSE, BLETCHLEY, MILTON KEYNES, MK3 6BBMilton Keynes

Prior Approval of single storey rear extension, with eaves of 3m metres and maximum height of 3m metres, extending 4.5 metres from the original rear wall

Pending
Small
Prior approval: Larger home extension
7 Jul 2026PLN/2026/1442
101 COTTINGHAM GROVE, BLETCHLEY, MILTON KEYNES, MK3 5AGMilton Keynes

Prior Approval of single storey rear extension, with eaves of 3.0 metres and maximum height of 3.0 metres, extending 4.0 metres from the existing rear wall and 4.0 metres from the original rear wall

Pending
Small
Approval of details reserved by a condition
7 Jul 2026PLN/2026/1435
139 BUCKINGHAM ROAD, BLETCHLEY, MILTON KEYNES, MK3 5JDMilton Keynes

Approval of details required by condition 3 (door details) of permission ref. PLN/2025/2035

Pending
Small
Notification of proposed works to trees protected by a Tree Preservation Order
19 Jun 2026PLN/2026/1309
BLETCHLEY PARK, WILTON AVENUE, BLETCHLEY, MILTON KEYNES, MK3 6EBMilton Keynes

The crown lift to 2.5m above ground of Oak Tree (T29) protected by Milton Keynes Council Tree Preservation Order no. PS/540/15/139

Pending
Small
Notification of proposed works to trees protected by a Tree Preservation Order
18 Jun 2026PLN/2026/1306
THE MANSION, BLETCHLEY PARK, SHERWOOD DRIVE, BLETCHLEY, MILTON KEYNES, MK3 6EBMilton Keynes

The crown lift to 2m above ground over footpath of Cedar (T102) protected by Milton Keynes Council Tree Preservation Order no. PS/540/15/139 and the crown lift to 4m above ground along boundary by parking bays/kerbs and prune back by 2m from street lights of mixed trees in Group E protected by Milton Keynes Council Tree Preservation Order no. PS/540/15/136

Pending
10 Jun 2026PL/26/04747/NMA
New Leys Buckingham Road Bletchley Milton Keynes MK3 5LABuckinghamshire

Non-material amendment to planning permission 24/02481/ADP (Submission of reserved matters (access, landscaping, appearance, scale and layout) for Parcel 1B pursuant to Outline Planning Permission 15/00314/AOP comprising the construction of 234 dwellings with associated parking, garaging, open space and balancing ponds for surface water attenuation and infrastructure) to allow for amendment to parking layout to incorporate extra parking spaces for plots 317 and 320; moving tree at front of plot 321 to front of plot 315 with change to plant species; and reduction of height of brick piers and railings beside plot 321

Pending
Small
Full planning permission
15 May 2026PLN/2026/1005
Dagnall House, Buckingham Road, Newton Longville, MK3 5LAMilton Keynes

Construction of access from Buckingham Road to a 34-dwelling housing site approved by Buckinghamshire County Council under ref. 22/03770/AOP (access previously approved by MKCC ref. 22/02682/OUT)

Pending
Small
Approval of details reserved by a condition
15 May 2026PLN/2026/1003
BUCKINGHAM HOUSE, BUCKINGHAM ROAD, BLETCHLEY, MILTON KEYNES, MK3 5LDMilton Keynes

Approval of details required by condition 27 (Gas assessment) of permission ref. PLN/2025/0702

Pending
Small
Lawful development certificate (proposed)
11 May 2026PLN/2026/0955
14 CRAIGMORE AVENUE, BLETCHLEY, MILTON KEYNES, MK3 6HDMilton Keynes

Certificate of lawfulness for the proposed single storey rear extension with roof lights. New ground floor side elevation window. Front porch extension with new front door. Conversion of the garage into living space with window to replace the shutter

Pending
Small
Approval of details reserved by a condition
8 May 2026PLN/2026/0947
Employment Land 2 & 3, Newton Leys, Milton Keynes , MK3 5SDMilton Keynes

Approval of details required by condition 6 (maintenance of surface water drainage system) of permission ref. PLN/2025/1868

Pending
Small
Householder planning permission
1 May 2026PLN/2026/0905
53 WINDMILL HILL DRIVE, BLETCHLEY, MILTON KEYNES, MK3 7REMilton Keynes

Proposed construction of single storey front porch, removal of flat roof over garage and provision of new tiled pitched roof

Pending
Small
Householder planning permission
1 May 2026PLN/2026/0911
5 COTTINGHAM GROVE, BLETCHLEY, MILTON KEYNES, MK3 5AAMilton Keynes

Erection of a first floor side extension and garage conversion and single storey rear extension

Pending
Small
Householder planning permission
9 Apr 2026PLN/2026/0733
90 WINDMILL HILL DRIVE, BLETCHLEY, MILTON KEYNES, MK3 7RRMilton Keynes

Removal of existing conservatory and erection of a single storey rear extension

Pending
Small
Householder planning permission
2 Apr 2026PLN/2026/0727
4 Home Close, Bletchley, Milton Keynes, MK3 6JEMilton Keynes

The erection of a single storey side extension with roof lights

Pending
Small
Notification of proposed works to trees in a conservation area
31 Mar 2026PLN/2026/0687
BLETCHLEY PARK, SHERWOOD DRIVE, BLETCHLEY, MILTON KEYNES, MK3 6EBMilton Keynes

Crown reduction by 3m of Cherry (T108)

Pending
Small
Approval of details reserved by a condition
20 Mar 2026PLN/2026/0610
128 BUCKINGHAM ROAD, BLETCHLEY, MILTON KEYNES, MK3 5HXMilton Keynes

Approval of details required by condition 4 (thatched roof) of permission ref. PLN/2025/2373

Pending
Large
Removal/variation of conditions
19 Mar 2026PLN/2026/0600
Dagnall House, Buckingham Road, Newton Longville, Buckinghamshire, MK3 5LAMilton Keynes

Variation of condition(s) 1 (Approved plans) and 4 (Highways) seeking to amend the access design (relating to permission ref. 22/02682/OUT Outline application (matters of access to be considered, with matters of layout, scale, appearance and landscaping reserved) for the erection of up to 34no. dwellings following the demolition of the existing Dagnall House and associated outbuildings (cross-boundary application with matters of access to be determined by Milton Keynes Council and all other matters to be determined by Buckinghamshire Council, Aylesbury Vale area))

Pending
Small
Lawful development certificate (proposed)
19 Mar 2026PLN/2026/0594
54 CHURCH GREEN ROAD, BLETCHLEY, MILTON KEYNES, MK3 6BLMilton Keynes

Certificate of lawfulness for proposed single storey side and rear extensions, alteration to existing windows

Pending
Small
Householder planning permission
16 Mar 2026PLN/2026/0550
13 HONDURAS GARDENS, NEWTON LEYS, MILTON KEYNES, MK3 5LYMilton Keynes

Proposed garage conversion & double storey extension above garage

Conditions
Small
Advertisement consent
13 Mar 2026PLN/2026/0545
The Old Swan, 8 Shenley Road, Bletchley, Milton Keynes, MK3 6EZMilton Keynes

Advertisement consent for display of 1x pictorial projecting sign, 1x fascia sign, 2 set of sign written text and logo, 3x welcome signs, 1x directional panel to existing post, and 1x car park directional sign

Pending
Small
Householder planning permission
9 Mar 2026PLN/2026/0466
54 WHALLEY DRIVE, BLETCHLEY, MILTON KEYNES, MK3 6HSMilton Keynes

Erection of a first floor rear extension and loft conversion with two dormer windows on front roof slope

Pending
Small
Notification of proposed works to trees protected by a Tree Preservation Order
9 Mar 2026PLN/2026/0471
BLETCHLEY PARK, SHERWOOD DRIVE, BLETCHLEY, MILTON KEYNES, MK3 6EBMilton Keynes

The crown reduction by 5m of 2x Blue Atlas Cedar (T74-75), and reduction to previous points (approx 5m) of Lime (T104), protected by Milton Keynes Council Tree Preservation Order no. PS/450/15/139

Pending
Small
Householder planning permission
5 Mar 2026PLN/2026/0454
89 ST JOHNS ROAD, BLETCHLEY, MILTON KEYNES, MK3 5DZMilton Keynes

Erection of a single storey side and rear extension & rear extension to existing garage to form car port

Pending
Small
Householder planning permission
3 Mar 2026PLN/2026/0435
9 OTTER CLOSE, BLETCHLEY, MILTON KEYNES, MK3 7QPMilton Keynes

Erection of first floor extension over existing side ground floor structure, erection of detached garage and outbuilding, and installation of dropped kerb

Pending
Small
Full Application
27 Feb 2026PL/26/01679/FA
50 Dickens Lane Newton Leys Bletchley Buckinghamshire MK3 5QEBuckinghamshire

Proposed loft conversion

Pending
Small
Householder planning permission
23 Feb 2026PLN/2026/0357
14 RENFREW WAY, BLETCHLEY, MILTON KEYNES, MK3 7NYMilton Keynes

Erection of single storey rear and side extension

Pending
Small
Prior approval: Telecommunications masts
20 Feb 2026PLN/2026/0354
Lord Grey School, Rickley Lane, Bletchley, Milton Keynes, MK3 6EWMilton Keynes

Prior notification for the proposed installation of 1 no. generator and associated ancillary works thereto

Pending
Small
Prior approval: Larger home extension
20 Feb 2026PLN/2026/0349
54 CHURCH GREEN ROAD, BLETCHLEY, MILTON KEYNES, MK3 6BLMilton Keynes

Prior approval of rear/side extension with eaves of 3 metres and maximum height of 3.98 metres, extending 7.67 metres from the original rear wall

Pending
Small
Lawful development certificate (proposed)
19 Feb 2026PLN/2026/0337
162 Severn Way, Bletchley, Milton Keynes, MK3 7QBMilton Keynes

Certificate of lawfulness for the proposed use of the property as supported accommodation for up to four young people placed under Section 20 of the Children Act 1989, without the provision of personal care, continues to fall within Use Class C3 and does not constitute a material change of use

Pending
Small
Certificate of Lawful Use - Proposed
18 Feb 2026PL/26/01370/SA
50 Dickens Lane Newton Leys Bletchley Buckinghamshire MK3 5QEBuckinghamshire

Certificate of lawfulness for the proposed loft conversion.

Pending
Small
Listed building consent (alterations or extension)
18 Feb 2026PLN/2026/0321
The Mansion, Bletchley Park, Sherwood Drive, Bletchley, Milton Keynes, MK3 6EBMilton Keynes

Listed building consent for the repair and restoration of The Bletchley Park Mansion external fabric, including brick and stone replacements, full reroofing and lead repairs, overhaul of the rainwater goods to increase capacity, the structural repair of chimneys and flues, the restoration and redecoration of the timber and crittall windows, the removal of asbestos insulation in the roof voids and the replacement of the failed condemned mansafe system

Withdrawn
Small
Approval of details reserved by a condition
17 Feb 2026PLN/2026/0319
Land North and South of Galapagos Grove, Newton Leys, Bletchley, MK3 5RPMilton Keynes

Approval of details required by conditions 7 (Boundary Treatments) & 8 (Hard & Soft Landscaping) of permission ref. PLN/2025/1868

Permitted
Small
Approval of details reserved by a condition
17 Feb 2026PLN/2026/0318
Land North and South of Galapagos Grove, Newton Leys, Bletchley, MK3 5RPMilton Keynes

Approval of details required by condition 11 (Solar PV Panels & Air Source Heat Pump) of permission ref. PLN/2025/1868

Permitted
Small
Approval of details reserved by a condition
13 Feb 2026PLN/2026/0292
THE DRIVING TEST CENTRE, WILTON AVENUE, BLETCHLEY, MILTON KEYNES, MK3 6DHMilton Keynes

Approval of details required by condition 3 (replacement tree planting) of permission ref. PLN/2025/1934

Pending
Small
Notification of proposed works to trees protected by a Tree Preservation Order
13 Feb 2026PLN/2026/0277
20 MILTON GROVE, BLETCHLEY, MILTON KEYNES, MK3 5BHMilton Keynes

The pollarding to previous points and crown lift to 4m of Poplar protected by Milton Keynes Council Tree Preservation Order no. PS/540/15/3

Pending
Small
Lawful development certificate (proposed)
2 Feb 2026PLN/2026/0186
1 MIDDLESEX DRIVE, BLETCHLEY, MILTON KEYNES, MK3 7JBMilton Keynes

Certificate of lawfulness for the proposed loft conversion with rear dormer and front rooflights

Pending
Small
Lawful development certificate (proposed)
2 Feb 2026PLN/2026/0195
4 TRENT ROAD, BLETCHLEY, MILTON KEYNES, MK3 7AZMilton Keynes

Certificate of lawfulness for the proposed alterations to the existing side structure and the conversion into habitable space, including associated alterations

Conditions
Small
Householder planning permission
29 Jan 2026PLN/2026/0170
38 SHENLEY ROAD, BLETCHLEY, MILTON KEYNES, MK3 6HFMilton Keynes

Proposed rear extension garden room

Permitted
Small
Approval of details reserved by a condition
23 Jan 2026PLN/2026/0127
Bletchley Landfill, Guernsey Road, Bletchley, Milton Keynes, MK3 5JUMilton Keynes

Approval of details required by conditions 4 (Current survey plan) and 5 (12-month site development plan) of permission ref. 20/00678/FULMMA

Conditions
Medium
Householder planning permission
20 Jan 2026PLN/2026/0108
9 AINSDALE CLOSE, BLETCHLEY, MILTON KEYNES, MK3 7TPMilton Keynes

Erection of two-storey rear extension and the erection of a front extension to infill the space between the existing garage and house

Conditions
Small
Householder planning permission
16 Jan 2026PLN/2026/0083
58 MILTON GROVE, BLETCHLEY, MILTON KEYNES, MK3 5BHMilton Keynes

Proposed erection of a single storey rear extension

Conditions
Small
Householder planning permission
5 Jan 2026PLN/2026/0009
184 WHALLEY DRIVE, BLETCHLEY, MILTON KEYNES, MK3 6JJMilton Keynes

Erection of single storey front extension and conversion of garage

Conditions
Small
Householder planning permission
2 Jan 2026PLN/2026/0001
2 HUNTINGDON CRESCENT, BLETCHLEY, MILTON KEYNES, MK3 5NTMilton Keynes

The erection of a single storey rear extension and demolition of existing conservatory