Planning leads for extension specialists
The single most common piece of residential work in the country, and the one most likely to be worth a letter: the applicant has already paid somebody to draw it and is about to need somebody to build it.
A trade only gets a page here when the search returns at least 1,000 applications in 90 days and clears 20 in at least 35 separate councils. Two numbers, because one of them lies: solar clears the first on its own and has never once cleared the second, and a page built on the national total alone would promise something that becomes nothing wherever you actually work. Counted on 24 August 2026.
The saved search behind this page
This is not a marketing page with a query hidden behind it. Applying it writes a real saved search onto your account: change the councils, change the date window, change the decision state, rename it or throw it away.
What it filters on:
trade=extensions.
Included in the £39 plan and on the free tier — it is not
a separate product and there is nothing extra to buy.
Where there is most of it
The busiest councils for this search in the last 90 days. Measured
- Birmingham 343 in 90 days
- Wandsworth 260 in 90 days
- Westminster 188 in 90 days
- Waltham Forest 175 in 90 days
- Croydon 164 in 90 days
- Havering 161 in 90 days
- Brent 157 in 90 days
- Bradford 152 in 90 days
- Hounslow 147 in 90 days
- Leeds 138 in 90 days
- Southwark 131 in 90 days
- Newham 126 in 90 days
Extension specialists by county and region
- Extension specialists in London 3,041 in 90 days
- Extension specialists in Scotland 648 in 90 days
- Extension specialists in Greater Manchester 574 in 90 days
- Extension specialists in Hertfordshire 550 in 90 days
- Extension specialists in the West Midlands 500 in 90 days
- Extension specialists in Essex 468 in 90 days
- Extension specialists in Surrey 452 in 90 days
- Extension specialists in Kent 450 in 90 days
- Extension specialists in West Yorkshire 446 in 90 days
- Extension specialists in Northern Ireland 386 in 90 days
- Extension specialists in Wales 380 in 90 days
- Extension specialists in Gloucestershire 356 in 90 days
- Extension specialists in Leicestershire 314 in 90 days
- Extension specialists in West Sussex 307 in 90 days
- Extension specialists in Lancashire 299 in 90 days
- Extension specialists in Nottinghamshire 283 in 90 days
- Extension specialists in Cambridgeshire 279 in 90 days
- Extension specialists in Berkshire 260 in 90 days
- Extension specialists in Hampshire 229 in 90 days
- Extension specialists in South Yorkshire 214 in 90 days
- Extension specialists in Bedfordshire 198 in 90 days
- Extension specialists in Norfolk 171 in 90 days
- Extension specialists in Devon 160 in 90 days
- Extension specialists in Staffordshire 160 in 90 days
- Extension specialists in East Sussex 141 in 90 days
- Extension specialists in Cheshire 137 in 90 days
- Extension specialists in North Yorkshire 133 in 90 days
- Extension specialists in Oxfordshire 133 in 90 days
- Extension specialists in Somerset 133 in 90 days
- Extension specialists in Dorset 129 in 90 days
- Extension specialists in Suffolk 124 in 90 days
- Extension specialists in Worcestershire 118 in 90 days
- Extension specialists in Lincolnshire 98 in 90 days
- Extension specialists in East Yorkshire 87 in 90 days
- Extension specialists in Tees Valley 84 in 90 days
- Extension specialists in Northamptonshire 75 in 90 days
- Extension specialists in Cumbria 72 in 90 days
- Extension specialists in Tyne and Wear 69 in 90 days
- Extension specialists in Derbyshire 62 in 90 days
- Extension specialists in Warwickshire 57 in 90 days
- Extension specialists in Wiltshire 38 in 90 days
- Extension specialists in Buckinghamshire 33 in 90 days
- Extension specialists in Merseyside 17 in 90 days
Recent applications this search found
Straight from the councils' own registers, newest first. We show what was proposed and what happened to it. We never publish who applied or where they live — that is what an account is for.
- Single storey rear extension
- Single storey side extension. New dormer window to rear roof face.
- Erection of 5 metre deep single storey rear extension. Maximum height 3.9 metres, eaves height 3 metres
- Single storey rear extension which would extend beyond the rear wall of the original semi-detached dwelling house by 5.57 metres, for which the maximum height would be 2.95 metres and for which the height at the eaves w…
- Construction of a single storey side extension, conversion of existing detached garage and new glazed link.
- Erection of a part single, part two storey rear extension following demolition of existing single storey extensions and two storey rear addition
- Single storey rear / side extension, alter ground floor side window to create door, skylights to existing round floor side roof
- Proposed refurbishment and extension of existing dwelling including; two storey rear extension incl dormer, single storey side extension at first floor level above existing building footprint, Replace all windows with n…
- Single storey front extension
- Single storey rear extension and internal alterations
- Single storey front extension with canopy porch, Partial conversion of garage, raising of garage roof and addition of rooflight windows
- Single Storey Side Extension
That is 12 of 13,222. A free account shows every one of them.
Every trade we measured
- Builders and general contractors
- Architects and planning consultants
- Glaziers and window installers
- Landscapers and driveway contractors
- Loft and garage conversion specialists
- Shopfitters and commercial contractors
- Solar and renewables installers
- Kitchen and bathroom fitters
- Party wall surveyors
Or start from a place: every council we cover · by county and region.
What it costs
A free account searches every council we cover and posts a letter for £1.45. £39 a month puts the applicants' names and addresses in front of you with 30 letters included, then £1.20 each. Trade searches are part of the plan — there is no per-trade product and nothing extra to buy.