Is the whole of Hertfordshire covered?

Yes. PlanPost monitors all 13 towns and built-up areas across Hertfordshire every day, picking up new planning applications within 24 hours of submission.

Which councils handle planning in Hertfordshire?

Planning applications in Hertfordshire are handled by East Hertfordshire, Welwyn Hatfield and Hertsmere. PlanPost monitors all of them every day.

How do I narrow down to a specific area within Hertfordshire?

Pick a postcode and a radius between 1 and 20 miles. PlanPost monitors one area at a time, so set the radius wide enough to cover your patch.

How quickly will I see new Hertfordshire leads?

Within 24 hours of submission. We pull new applications every day, and matches land on your dashboard the same morning. Review each one and queue the letter yourself, or switch on auto-send so PlanPost queues it the moment a match comes in. Either way, PlanPost prints and posts.

What if more leads come through from Hertfordshire than my plan covers?

Anything past your monthly allowance is charged per letter (£1.29 to £1.49 + VAT, by tier). You can also set a monthly cap if you want a hard ceiling on extra-letter spend.

For Builders in Hertfordshire

1,736 jobs just hit Hertfordshire planning. None of those homeowners know you exist yet.

PlanPost turns new planning applications into construction leads across Hertfordshire: we spot each relevant application the day it's filed, then print and post a branded letter from you to the homeowner before they've even started looking for a builder. Review each lead, or set it to auto-send the lot. Your letter lands on a doormat before anyone else's van turns up.

1,736 applications in Hertfordshire in the last 90 days
Letters printed and posted for you, via Royal Mail
From £39/mo, cancel anytime

Get started from £39/mo See sample leads ↓

Updated this morning · 10 councils monitored · Letters included · Cancel anytime

Hertfordshire, in the UK

Live data

Live leads in Hertfordshire you could be winning

Sample of the planning applications builders are quoting on right now. Last 90 days.

1,736 live applicationsMostly Extensions (903)Updated this morning

49 of 1,736 shown below, anonymised to street level. Subscribe to get every new lead with full details, plus a starter batch the day you sign up.

Start receiving leads

Mayhill RoadEN5

New

Single storey rear extension

ExtensionSingle StoreyRear Extension

3 days ago5 Oct

Essex RoadWD6

New

Demolition of existing rear extension and construction of single storey rear extension. Depth: 5.00m, Height: 3.20m, Eaves: 3.00m.

ExtensionSingle StoreyRear ExtensionDemolition

3 days ago5 Oct

Woodfall AvenueEN5

New

First floor side and rear extension with juliette balcony. Roof extension involving rear dormer window and front, side and rear facing rooflights

ExtensionLoftRear ExtensionFirst Floor ExtensionDormer

3 days ago5 Oct

Alan DriveEN5

New

Part single, part two storey side and rear extensions following demolition of the existing bunker

ExtensionTwo StoreyPart Single/Part Two StoreyRear Extension

3 days ago5 Oct

Crescent RoadEN4

New

Single storey rear extension with a proposed depth of 5 metres, maximum height of 4 metres and eaves height of 3 metres

ExtensionSingle StoreyRear Extension

3 days ago5 Oct

Ward CloseEN7

New

Front porch infill extension and replacement of timber cladding beneath front window with brickwork to match existing dwelling

ExtensionFront ExtensionInfill ExtensionPorch

6 days ago2 Oct

Baas HillEN10

New

Conversion of garage to habitable room with alterations to side and rear fenestration and erection of front porch

ExtensionConversionFront ExtensionPorchHabitable Space Conversion

6 days ago2 Oct

Silver BirchesEN10

New

Certificate of lawfulness for proposed outbuilding in rear garden

Outbuilding

6 days ago2 Oct

St Albans RoadWD25

New

The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 6.0m for which the maximum height would be 3.0m and for which the height of the eaves w…

ExtensionSingle StoreyRear Extension

6 days ago2 Oct

Gloucester RoadEN5

Use of the existing garden room for appointment only non-surgical facial-aesthetics and platelet-rich plasma (PRP) treatments

OutbuildingGarden Office

1 week ago1 Oct

Kenerne DriveEN5

Two storey side extension and single storey rear extension following demolition of the existing garage

ExtensionSingle StoreyTwo StoreyRear Extension

1 week ago1 Oct

Ferney RoadEN7

Conversion of garage into habitable room with 2no. roof lights and alterations to fenestration

ConversionHabitable Space ConversionWindows & Doors

1 week ago1 Oct

Show 37 more applications

Hertford RoadSG2

Erection of 1no. three bedroom chalet bungalow with associated hard and soft landscaping.

New BuildLandscapingBungalow

1 week ago1 Oct

Vardon RoadSG1

Erection of single storey rear extension and part garage conversion

ExtensionConversionOutbuildingSingle StoreyRear ExtensionNew/Detached Garage

1 week ago1 Oct

Well Cottage Stortford RoadCM23

Removal of existing conservatory and installation of new Orangery Garden room

HeritageExtensionOutbuildingGarden OfficeConservatoryOrangery

1 week ago30 Sept

Colston CrescentEN7

Enlargement of existing rear dormer

LoftDormer

1 week ago30 Sept

Priory CloseEN10

Certificate of lawfulness for proposed single storey rear extension to replace existing and part conversion of garage to habitable room

ExtensionConversionSingle StoreyRear ExtensionHabitable Space Conversion

1 week ago30 Sept

High StreetEN11

Change of use to existing roof space from office (Use Class E) to residential dwelling (Use Class C3)

LoftConversionOffice to Residential

1 week ago30 Sept

Barberry RoadHP1

Single Storey rear extension measuring 4.53m deep with a maxim ridge height of 2.52m and maximum Eaves height of 2.20m

ExtensionSingle StoreyRear ExtensionRidge Height Change

1 week ago30 Sept

Leggfield TerraceHP1

Demolition of conservatory. Construction of a single storey rear extension.

ExtensionSingle StoreyRear ExtensionConservatory

1 week ago30 Sept

Well Cottage Stortford RoadCM23

Removal of existing conservatory and installation of new Orangery Garden room

ExtensionOutbuildingGarden OfficeConservatoryOrangery

1 week ago30 Sept

Clifford RoadEN5

Roof extension involving hip to gable, rear dormer window and 2no. front and 2no. side facing rooflights

LoftDormerHip to Gable

1 week ago30 Sept

Featherstone GardensWD6

Demolition of existing conservatory to facilitate construction of single storey rear extension Depth: 4.70m, Height: 3.20m, Eaves: 2.30m.

ExtensionSingle StoreyRear ExtensionConservatory

1 week ago30 Sept

Harthall LaneWD4

Certificate of Lawfulness Proposed Development: Stationing of a mobile home to be used as an annexe

OutbuildingAnnex/Annexe

1 week ago30 Sept

West Valley RoadHP3

Single storey rear extension; hip-to-gable loft conversion with front and rear dormers; replacement porch to front; alterations to openings.

ExtensionLoftSingle StoreyRear ExtensionHip to Gable

1 week ago30 Sept

Trinity Road Hertford HeathSG13

Notification of proposed single storey rear extension: Depth 4.00 metres, Height 2.97 metres, Eaves height 2.82

ExtensionSingle StoreyRear Extension

1 week ago30 Sept

Bedwell CrescentSG1

Erection of first floor side and rear extensions

ExtensionRear ExtensionFirst Floor Extension

1 week ago30 Sept

Park CloseSG2

Erection of single storey side and rear extension following demolition of existing single storey side and rear extension.

ExtensionSingle StoreyRear ExtensionDemolition

1 week ago30 Sept

Leslie DriveSG4

Insertion of front ground floor window and rear bi-fold doors following removal of existing garage door to facilitate garage conversion

ConversionGarage ConversionBifold DoorsGarage Door

1 week ago30 Sept

Belmont AvenueEN4

New front porch

ExtensionFront ExtensionPorch

1 week ago29 Sept

Eastfield AvenueWD24

The erection of a single storey rear extension which would extend beyond the rear wall of the original house by 5.00m for which the maximum height would be 4.00m and for which the height of the eaves…

ExtensionSingle StoreyRear Extension

1 week ago29 Sept

Pondfield CrescentAL4

Prior Notification - Single storey rear extension 3.0m in height x 6.0m in depth with 2.70m height to eaves

ExtensionSingle StoreyRear ExtensionPrior Notification

1 week ago29 Sept

Lombardy CloseHP2

Conversion of an existing garage to habitable accommodation, including insertion of new front and side windows; replacement of the existing flat roof over the front dormer with a pitched roof; instal…

LoftConversionDormerFlat RoofPitched Roof

1 week ago29 Sept

Chells WaySG2

Single storey front extension and part two storey, part single storey rear extension

ExtensionSingle StoreyTwo StoreyRear Extension

1 week ago29 Sept

Vernon CrescentEN4

2no. single storey rear extensions with a maximum depth of 6.00m, a maximum height of 3.81m and an eaves height of 3.00m and a maximum depth of 6.00m, a maximum height of 3.81m and an eaves height of…

ExtensionSingle StoreyRear ExtensionConservatory

1 week ago29 Sept

Seaforth DriveEN8

Loft conversion with two rear dormers and 4no. rooflights to front elevation

LoftLoft ConversionFront Elevation Change

1 week ago29 Sept

The AstersEN7

Certificate of lawfulness for proposed single storey rear extension

ExtensionSingle StoreyRear Extension

1 week ago29 Sept

Spring LaneHP1

Loft conversion with a rear dormer and three front rooflights

LoftDormerLoft Conversion

1 week ago29 Sept

Brookside BarnetEN4

Roof extension involving rear dormer window, 3no. front facing rooflights and new side gable window

LoftDormer

1 week ago29 Sept

Eastcott East LaneWD5

Construction of a detached garage

Outbuilding

1 week ago29 Sept

Pouchen End Hall Pouchen End LaneHP1

New vehicular entrance and driveway, replacement of the pool building with an extension. Internal alterations, replacement windows and changes to the existing building.

ExtensionOutbuildingReplacement WindowsDriveway/HardstandingInternal Alterations

1 week ago29 Sept

Winston WayEN6

Conversion of garage to habitable space including removal of garage door and replacement window.

ConversionReplacement WindowsGarage DoorHabitable Space Conversion

1 week ago29 Sept

Ashfield Nursery Newgatestreet RoadEN7

Application for the approval of details reserved by condition no. 8 (Refuse Disposal) of planning ref. 07/21/0029/O (Outline planning permission with all matters reserved for custombuild development…

New BuildOutline PermissionMajor Development

1 week ago29 Sept

Warden Nursery Newgatestreet RoadEN7

Approval of reserved matters persuant to outline planning permission 07/23/0588/O for access, appearance, landscaping, layout and scale for the removal of all remaining horticultural structures and h…

New BuildLandscapingSelf BuildOutline Permission

1 week ago29 Sept

Ashfield Nursery Newgatestreet RoadEN7

Application for the approval of details reserved by condition no. 18 (Visibility Splays) of planning ref. 07/21/0029/O (Outline planning permission with all matters reserved for custombuild developme…

New BuildOutline PermissionMajor Development

1 week ago29 Sept

Pouchen End Hall Pouchen End LaneHP1

New vehicular entrance and driveway, replacement of the pool building with an extension. Internal alterations, replacement windows and changes to the existing building.

HeritageExtensionOutbuildingReplacement WindowsDriveway/HardstandingInternal Alterations

1 week ago29 Sept

St. Andrews DriveSG1

Lawful Development Certificate (Proposed) for conversion of double garage, and erection of single storey side/rear extension to facilitate access from the existing dwelling house.

ExtensionConversionOutbuildingSingle StoreyRear Extension

1 week ago29 Sept

St. Andrews DriveSG1

Conversion of double garage, and erection of single storey side/rear extension to facilitate access from the existing dwelling house.

ExtensionConversionOutbuildingSingle StoreyRear Extension

1 week ago29 Sept

Chertsey RiseSG2

Erection of a part two storey, part single storey rear extension.

ExtensionSingle StoreyTwo StoreyRear Extension

1 week ago29 Sept

12-month application volume

Hertfordshire sees between 556 and 961 planning applications per month (averaging 748); recent months are easing.

Local intelligence

Know your patch: what gets built in Hertfordshire, by whom, and who approves it

The patterns behind the leads. Helpful when you're deciding which jobs to chase.

What's being built in Hertfordshire

Application volume by project type, last 90 days.

Extensions

903

Loft conversions

148

Outbuildings

103

New builds

102

Heritage

Conversions

Applications · 90d

1,736

vs 2,336 prior quarter

Approval rate

85%

476 decided

Biggest category

Extensions

903 apps

vs prior 90d

-26%

The three busiest councils in Hertfordshire right now are East Hertfordshire (1,153 apps in the last 90 days), Welwyn Hatfield (851) and Hertsmere (843). Between them, that's about 164% of what comes through the area.

How councils in Hertfordshire compare

Approval rates, decision times and what gets approved most often. Last 12 months.

East Hertfordshire

23% of the area

Approval rate: 77%
Median decision: 9.6 wk

Most approved

Garage Door100%
Staircase100%
Basement100%

Welwyn Hatfield

17% of the area

Approval rate: 81%
Median decision: 8.3 wk

Most approved

Garden Office100%
Air Source Heat Pump100%
Ground Floor Extension100%

Hertsmere

17% of the area

Approval rate: 82%
Median decision: 8.0 wk

Most approved

Ridge Height100%
Render Cladding100%
Juliet Balcony100%

Towns we cover in Hertfordshire

13 towns, ordered by population.

Hemel Hempstead94,932 residents · 200 apps 90d Watford90,301 residents · 299 apps 90d Stevenage89,663 residents · 177 apps 90d St Albans82,146 residents · 183 apps 90d Welwyn Garden City48,380 residents · 112 apps 90d Barnet47,359 residents · 272 apps 90d Hatfield43,090 residents · 43 apps 90d Hoddesdon42,253 residents · 41 apps 90d Bishop's Stortford40,955 residents · 56 apps 90d Borehamwood36,322 residents · 59 apps 90d Garston33,000 residents · 106 apps 90d Hertford29,418 residents · 27 apps 90d Bushey28,416 residents · 69 apps 90d

The product

From planning application to doormat in 24 hours

Done-for-you letters

Branded letters, printed and posted for you

Upload your logo and letterhead once, or let PlanPost generate one for you. Every matched application triggers a letter personalised with the homeowner's address and the project they applied for. The greeting stays “Dear Homeowner”: we never use their name. Royal Mail, same working day.

“The letters look better than anything I'd have put together myself. One landed on a £72k loft before the homeowner had even spoken to another builder.”

Chris K.

Owner, CSK Property

Oakwood

Construction

EST. 2012 · SHEFFIELD

14 Station Road
Sheffield S7 4RQ
0114 555 0192

The Homeowner
22 Laurel Gardens
Sheffield
S7 1DH

15 April 2026

Re: Your planning application at 22 Laurel Gardens

Dear Homeowner,

Congratulations on submitting your planning application for a loft conversion at 22 Laurel Gardens. It's exciting to see local homeowners investing in improving their properties.

I'm writing to introduce Oakwood Construction, a local building company that specialises in extensions, loft conversions and home improvements across South Sheffield. We've been trading since 2012, and everything we build is carried out by our own team rather than subcontractors, so someone is on your job every day and the work never stalls.

We finished a loft conversion much like yours on Abbeydale Road earlier this year: two bedrooms and a shower room, done in eleven weeks with the family living at home throughout.

I know the two big questions at this stage are what it will really cost and what it's like to live through the build. Those are exactly the things I'd rather set out honestly with you before you commit to anything.

If you'd like to discuss your plans or would welcome a free, no-obligation consultation, I'd be happy to visit at a time that suits you. Call me on 0114 555 0192, or scan the code below to see examples of our recent work.

I look forward to hearing from you.

Kind regards,

Dave Morgan

Director · Oakwood Construction

Scan to see our work

Royal
Mail

How PlanPost works in Hertfordshire

From planning application to letter on the homeowner's doormat, done for you, in 24 hours.

We monitor East Hertfordshire, Welwyn Hatfield and Hertsmere every day

Every new planning application is pulled in within 24 hours and matched to your project types and working radius. No spam, no irrelevant noise.

Same-day

Your branded letter goes in the post

Your letterhead and your chosen letter template, merged with the homeowner's address and project details, then sent by Royal Mail. Printing and postage included.

Done for you

You track every lead through to won

A proper sales pipeline. From posted to responded, quoted, and won, with timeline events, notes and deal values so you see what's working.

Real pipeline

Pick a plan and start winning Hertfordshire jobs

Monthly rolling. Letters included in every plan. Cancel or pause anytime.

Starter

£39/mo + VAT

£46.80 inc. VAT

25 letters / month included

Start with Starter

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Questions builders ask before they sign up

Your next job is waiting in a planning application today.

PlanPost finds it, writes to the homeowner, and puts you first in the queue while you're on site.

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