Skip to content

Get in first on annexe planning applications

22,900 Annexe applications on record across the UK

Sample Annexe applications

  • P/2025/0617/HHFPSt HelensSingle storey garden annexe.
  • 25/02070/CLEReigateCertificate of Lawfulness Existing Use for the existing annex building, Little Heronswood, 'As Built' and its use as C3 residential by the occupiers
  • AWDM/1432/25Adur and WorthingProposed single storey granny annexe in rear garden for family member

Every annexe starts as a planning application. A family wants a parent close by, a grown-up child needs a home of their own, or a homeowner wants a garden annexe for guests. The moment that application goes in, the homeowner starts choosing who will design it, build it, supply it and fit it out. You want to be the first name they hear.

Planning Signal puts those applications in front of you the day councils publish them. You see the address, the work and the people behind it while the job is still open. You call first, quote first and land the contract before the tender goes out.

A steady pipeline of annexe work, wherever you operate

There are more than 22,000 annexe applications on record across 400+ UK councils in England, Scotland, Wales and Northern Ireland. Every week brings new ones: timber garden buildings, converted garages, purpose-built granny annexe homes and ancillary accommodation above double garages. Each one is a client with a budget and a deadline. Pick your areas, set your keywords and fill your diary with jobs you heard about before your competitors did.

What counts as an Annexe application

An annexe application is any planning application for living accommodation that belongs to an existing home. You receive the full spread, and each one is a specific job with a specific set of trades behind it.

Detached garden annexes put a whole build on the table

A new single-storey building in timber, block or modular construction is the biggest prize. It needs a base, drainage, services, a shell, a kitchen and a wet room. Builders, manufacturers and groundworkers all win from one approval.

Garage and outbuilding conversions need a builder fast

Converting a garage, stable or barn into ancillary accommodation means infill walls, new floors, insulation, glazing and fire separation. These projects move quickly from approval to start, so the first contractor through the door wins.

Attached annexes extend the house

Families who want a parent under the same roof apply for a ground-floor extension with its own bedroom, bathroom and kitchenette. That is extension work with an accessible fit-out: level thresholds, wide doors and grab rails.

Mobile and lodge annexes signal a delivery date

Lawful development certificates for a caravan or twin unit in the garden tell you a unit is on order. Base layers, drainage firms and utility installers have a job waiting.

Condition changes reveal the next project

Applications to vary an occupancy condition, or to turn an existing annexe into a separate home, bring work for planning consultants, architects and builders tasked with splitting services, access and boundaries.

Who tracks Annexe applications

Annexe work spreads across every trade a house needs. The firms that win it act on the application, not the advert.

Builders win the main contract

Builders and main contractors read the description, check the site on a map and write to the homeowner or call the agent while the drawings are still on the officer's desk. A builder who prices the job before approval lands it the week permission comes through.

Manufacturers fill their production slots

Modular, timber frame and lodge manufacturers target applicants who have not yet chosen a supplier. A brochure and a site visit at application stage turn into a confirmed order and a booked delivery.

Architects and consultants win the next stage

Architects pick up building regulations packages, discharge of conditions and full redesigns after a refusal. Planning consultants step in on refused schemes, appeals and condition variations, and the agents named on applications point them to firms worth partnering with.

Specialist contractors and suppliers get specified early

Groundworkers, drainage engineers, heat pump installers, electricians, kitchen and bathroom fitters and accessible living specialists approach the homeowner or the main contractor before the specification is fixed. Suppliers of cladding, glazing, roofing and sanitaryware contact the builders and agents named on applications in their patch and get their products written into the job. Each one turns a public record into a private conversation, and that conversation into a contract.

How Planning Signal helps with Annexe applications

Leads sends you new annexe applications that match your keywords the day councils publish them, in one email a day. Choose nationwide coverage or up to 5 areas, each a radius of up to 75 miles from a postcode or town, or a whole council. You get granny annexe leads from the places you work, and nothing from the places you don't.

Every lead gives you what you need to make the call

Each lead carries:

  • the planning reference and council
  • the site address
  • the description of the work and the application type
  • key dates and decision status
  • a link to the council's own record
  • the applicant, agent firm and business contact wherever the council publishes them

Track every job from first contact to won

The lead pipeline records who you contacted, who you quoted and which jobs you won, so nothing slips. Leads also includes everything in Research: search across 2.3 million planning applications, advanced filters and CSV export for your own CRM and mailing lists.

One price for the whole picture

Leads costs £49 + VAT a month. Planning Signal covers every kind of planning application, so the same subscription brings you extensions, conversions, new builds and any other work you add to your keywords.

Free alerts for your own street

Anyone can get free email alerts for planning applications near an address, postcode, town or council. Homeowners, neighbours and parish councils use them to see what is planned close to home.

Frequently asked questions

Will I get only annexe applications, or everything nearby?
You get exactly what your keywords match. Add annexe, granny annexe, ancillary accommodation and garden annexe and your daily email carries those projects. Want loft conversions or extensions as well? Add those words too. Planning Signal covers every kind of planning application, so you build your email on the work you want to win.
What if the applicant's name is not published?
You still have the site address, the agent firm when the council publishes it, and a link to the council's own record with the drawings. Write to the homeowner at the address, or call the agent who drew the scheme. Agents handle many annexe projects a year and refer the builders they trust.
Can I look at older annexe applications as well as new ones?
Yes. Search and advanced filters let you look back through applications already on record, see what each council has approved and refused, and export the results to CSV. Use approved schemes awaiting a start as an instant call list, and study refusals to know exactly what each council expects.
Does Leads pay for itself?
One annexe contract is worth far more than a year of Leads. Win a single garden build, garage conversion or supply order from your daily email and the subscription has paid for itself many times over. Every job after that is profit you would never have seen without hearing about it first.
My work crosses council boundaries. Does that matter?
No. Draw a radius of up to 75 miles from your yard postcode or home town and every council inside it is covered, whatever the boundary lines say. Mix radius areas with whole councils across your 5 areas to match the exact patch your vans travel every week.
📖

Looking for a step-by-step guide?

The statistics and application data above track live planning submissions. For a practical how-to guide (including what forms to submit, timelines, costs and exemptions), see our dedicated planning guide:

Annexe: Complete Planning Guide →