The statutory requirement for consultation on planning applications is a minimum of 21 days. The online comments form is linked to the statutory time period and will close after this time.

If the online comments form has closed, you can still comment via email to [email protected]

We will take account of all representations received right up until an application is determined.

Please note that if the Comments Until date shown is before the Application Registered date this is because either:
  •  we are not required to consult on the application (you can check this in our
     Statement of Community Involvement); or
  •  the formal consultation period has not yet started by the application being advertised in the
     local newspaper or site notice(s) being put up at the application site.

Application Registered08-10-2026 

Comments Until08-11-2026   Add Comments Here

Date of Committee 

Decision   

Appeal Lodged 

Appeal Decision   

Application Number2026/3523/P

Site Address45 Downshire Hill London NW3 1NU 

Application TypeHouseholder Application 

Development TypeResidential Extension 

ProposalErection of single storey rear extension at basement level with rooflights, extension of rear ground floor terrace, lowering of rear window sill to form new doorway, and installation of air source heat pump with acoustic enclosure to rear garden and 4 x internal air conditioning units, with associated alterations to rear terrace staircase and landscaping. 

Current StatusREGISTERED 

ApplicantMr. and Ms. Cumming & Brooksby 

Agenturban future organization ??? london 

WardsHampstead Town 

Location Co ordinatesEasting 526992 Northing 185714 

OS Mapsheet  

Appeal Submitted?No 

Appeal Decision 

Case Officer / TelTimothy Lee  1630   

DivisionPlanning Solutions Team 

Planning OfficerTimothy Lee 

Determination Level 

Existing Land UseC3 Dwelling House 

Proposed Land UseC3 Dwelling House 

View the location map for 45 Downshire Hill London NW3 1NU (opens in a new window)

Application Dates

Application Checks

Application Meetings

Application Constraints

View Related Documents

Consultees Details