For Builders in Hertfordshire

1,763 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.

  • 1,763 applications in Hertfordshire in the last 90 days
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Updated this morning · 10 councils monitored · Letters included · Cancel anytime
Live data

Live leads in Hertfordshire you could be winning

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

1,763 live applicationsMostly Extensions (911)Updated this morning

50 of 1,763 shown below, anonymised to street level. Subscribe to get every new lead with full details, plus a starter batch the day you sign up.

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Langford RoadEN4

New

Single storey rear extension with a proposed depth of 5 metres, maximum height of 3.97 metres and eaves height of 2.6 metres

ExtensionSingle StoreyRear Extension
yesterday13 Oct

High StreetEN5

New

Erection of a freestanding rear pergola

OutbuildingPergola
2 days ago12 Oct

High StreetEN5

New

Single storey rear extension, enclosure of existing outdoor courtyard space to provide additional dining, alterations to internal layouts at basement and ground floor levels. Change of use of existin…

ExtensionSingle StoreyRear ExtensionBasement/Cellar
2 days ago12 Oct

Willow Tree Farm Denham LaneSL9

New

Outline planning application for construction of up to 2 dwellings (matter to be considered at this stage: access)

New BuildOutline Permission
2 days ago12 Oct

Cromer RoadEN5

New

Single storey rear extension with 1no. rooflight and pitched roof following demolition of the existing conservatory

ExtensionSingle StoreyRear ExtensionRoof Light/Velux
5 days ago9 Oct

Moreton CloseEN7

New

Prior approval for 4.5m single storey rear extension

ExtensionSingle StoreyRear ExtensionPrior Approval
5 days ago9 Oct

Stafford DriveEN10

New

Hip to gable loft conversion with rear dormer and 2no. dormers to front elevation

LoftDormerHip to GableLoft Conversion
5 days ago9 Oct

Shackleton Spring Stevenage HertsSG2

New

Erection of single storey rear extension and front fenestration alteration

ExtensionSingle StoreyRear ExtensionWindows & Doors
6 days ago8 Oct

West HillSG5

New

Single storey rear extension to existing garage, insertion of rear dormer and 2 no.roof lights to front roofslope to facilitate loft conversion, first-floor rear bay window extension, and alterations…

ExtensionLoftSingle StoreyRear ExtensionDormer
6 days ago8 Oct

Lancaster RoadEN4

New

Two storey rear extension with new access steps with associated railings

ExtensionTwo StoreyRear Extension
6 days ago8 Oct

Stockings LaneSG13

New

Certificate of lawfulness for proposed construction of 1 x dormer window to rear

LoftDormer
6 days ago8 Oct

Stockings LaneSG13

New

Prior approval application (Part 1, Class A) for construction of single storey rear extension; depth extending from the original rear wall by 4.85 metres, a maximum height of 3.30 metres and an eaves…

ExtensionSingle StoreyRear ExtensionPrior Approval
6 days ago8 Oct
Show 38 more applications

Land Opposite Fairholme Stables Archers Green LaneAL6

New

Permission in principle for erection of 1 x detached dwelling

New BuildDetached House
6 days ago8 Oct

Minehead WaySG1

Erection of first floor rear extension

ExtensionRear ExtensionFirst Floor Extension
1 week ago7 Oct

Petworth CloseSG2

Proposed garage conversion, rear and side extension, and alterations to openings to the rear

ExtensionConversionSide ExtensionGarage Conversion
1 week ago7 Oct

Friars WalkHP23

Single storey wrap-around front, side and rear extension with deck/terrace area and privacy screen to rear. Demolition of existing garage.

ExtensionSingle StoreyRear ExtensionWrap Around
1 week ago7 Oct

Lord StreetEN11

Double storey side extension, single storey rear extension, erection of front porch and hip to gable roof

ExtensionLoftSingle StoreyTwo StoreyRear Extension
1 week ago7 Oct

Stafford DriveEN10

Certificate of lawfulness for proposed hip to gable loft conversion with rear dormer

LoftDormerHip to GableLoft Conversion
1 week ago7 Oct

Ranworth AvenueEN11

Certificate of lawfulness for proposed single storey rear extension, conversion of garage to habitable room, loft conversion with rear dormer and erection of outbuilding

ExtensionLoftConversionSingle StoreyRear ExtensionDormer
1 week ago7 Oct

High Point Kemprow Aldenham Watford HertfordshireWD25

Demolition of existing garage/workshop and erection of a 5x bed two storey dwelling with habitable space at loft level. Erection of a triple-bay garage/carport serving High Point, formation of a new…

New BuildOutbuildingTwo StoreyNew/Detached GarageCarport
1 week ago7 Oct

Tudor RoadEN5

Roof extension involving rear dormer window and 1no. front facing rooflights

LoftDormer
1 week ago7 Oct

West WalkEN4

Single storey rear extension with a depth of 4.00 metres, a maximum height of 3.78 metres and an eaves height of 2.88 metres, following the demolition of the existing rear outrigger.

ExtensionSingle StoreyRear ExtensionDemolition
1 week ago7 Oct

Burton Grange Rags LaneEN7

Residential development of 37no. dwellings and associated infrastructure, including the part-demolition and conversion of Burton Grange to 2no. dwellings

New BuildConversionDemolition
1 week ago7 Oct

Tennand CloseEN7

Certificate of lawfulness for proposed loft conversion with rear dormer and 3no. velux to front elevation

LoftDormerRoof Light/VeluxLoft Conversion
1 week ago7 Oct

Nutkins WayHP5

Householder application for the construction of a single storey rear extension

ExtensionSingle StoreyRear Extension
1 week ago7 Oct

Nabowla Nicol RoadSL9

Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for: single storey rear extension (depth extending from the original rear wal…

ExtensionSingle StoreyRear Extension
1 week ago7 Oct

The Orchard Access Road From Labdens Lane To The Orchard Colliers EndSG11

Prior approval application (Part 1, Class A) for construction of single storey rear extension; depth extending from the original rear wall by 8.00 metres, a maximum height of 4.00 metres and an eaves…

ExtensionSingle StoreyRear ExtensionPrior Approval
1 week ago7 Oct

Thumpers Hemel Hempstead HertfordshireHP2

Erection of a front entrance porch extension and replacement of the existing flat porch roof with a pitched tiled roof.

ExtensionPorch
1 week ago7 Oct

The Orchard Access Road From Labdens Lane To The Orchard Colliers EndSG11

Certificate of lawfulness for proposed construction of single storey side extensions following demolition of existing structures and fenestration alterations

ExtensionSingle StoreySide ExtensionDemolition
1 week ago7 Oct

St Albans RoadSG4

Remove painted roughcast render from north elevation gable leaving hard cement substrate. Re-render in two coats NHL 2 lime render with a wood float finish and limewash. Repair top of chimney stack a…

HeritageChimneyRender/Cladding
1 week ago6 Oct

Blindmans LaneEN8

Prior approval for 5m single storey rear extension

ExtensionSingle StoreyRear ExtensionPrior Approval
1 week ago6 Oct

Lexington WayEN5

Two storey rear extension with juliette balcony at first floor and alterations to existing patio area. Conversion of the existing garage into habitable room, insertion of window to replace garage doo…

ExtensionLoftConversionTwo StoreyRear ExtensionPatio/Terrace
1 week ago6 Oct

Stafford DriveEN10

Hip to gable loft conversion with rear dormer and 2no. dormers to front elevation

LoftDormerHip to GableLoft Conversion
1 week ago6 Oct

Tring Park School For The Performing Arts Mansion DriveHP23

Side extensions and associated alterations to the Markova Theatre

ExtensionSide Extension
1 week ago6 Oct

Venus Hill Farm Venus HillHP3

Confirming lawfulness of existing building used as a private art studio ancillary to the dwelling house. The outbuilding is situated to the east of east and north-east of the main farmhouse and is id…

Outbuilding
1 week ago6 Oct

Chipperfield RoadWD4

Single storey side and rear wrap round extension and associated internal alterations, front porch extension and changes to extenal wall finishes (enhanced external insulation and rendered finish)

ExtensionSingle StoreyFront ExtensionPorch
1 week ago6 Oct

Little Hoo Tring HertfordshireHP23

Single storey front extension.

ExtensionSingle StoreyFront Extension
1 week ago6 Oct

Monks CloseEN10

Single storey rear extension

ExtensionSingle StoreyRear Extension
1 week ago6 Oct

Hammond CloseEN7

Prior approval for 4.96m single storey rear extension

ExtensionSingle StoreyRear ExtensionPrior Approval
1 week ago6 Oct

Lyonsdown RoadEN5

Single storey side and rear extension. Front porch extension. Conversion of garage into habitable room, insertion of window to replace existing garage door. Roof extension involving hip to gable, rea…

ExtensionLoftConversionSingle StoreyRear ExtensionFront Extension
1 week ago6 Oct

Hitchin RoadSG1

Demolition of existing residential dwellings and the erection of a Care Home (Use Class C2), together with associated access, parking, landscaping, drainage, and other associated works at 15-21 Hitch…

New BuildLandscapingDemolitionCare Home/Nursing
1 week ago5 Oct

Broadwater CrescentSG2

Erection of single storey front extension

ExtensionSingle StoreyFront Extension
1 week ago5 Oct

Mayhill RoadEN5

Single storey rear extension

ExtensionSingle StoreyRear Extension
1 week ago5 Oct

Brantwood GardensEN2

Single storey rear extension including internal alterations.

ExtensionSingle StoreyRear ExtensionInternal Alterations
1 week ago5 Oct

Woodfall AvenueEN5

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
1 week ago5 Oct

Alan DriveEN5

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

ExtensionTwo StoreyPart Single/Part Two StoreyRear Extension
1 week ago5 Oct

Stevenage CrescentWD6

Single storey rear extension Depth: 6.00m, Height: 3.00m, Eaves: 3.00m.

ExtensionSingle StoreyRear Extension
1 week ago5 Oct

Essex RoadWD6

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

ExtensionSingle StoreyRear ExtensionDemolition
1 week ago5 Oct

Crescent RoadEN4

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
1 week ago5 Oct

Butterwick Watford HertfordshireWD25

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
1 week ago5 Oct

12-month application volume

Hertfordshire sees between 637 and 963 planning applications per month (averaging 757); 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
911
Loft conversions
154
New builds
105
Outbuildings
100
Heritage
87
Conversions
68
Applications · 90d
1,763
vs 2,291 prior quarter
Approval rate
85%
457 decided
Biggest category
Extensions
911 apps
vs prior 90d
-23%

The three busiest councils in Hertfordshire right now are East Hertfordshire (1,182 apps in the last 90 days), Welwyn Hatfield (843) and Hertsmere (842). Between them, that's about 163% 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
76%
Median decision
9.6 wk

Most approved

  • Garage Door100%
  • Staircase100%
  • Basement100%

Welwyn Hatfield

16% of the area
Approval rate
81%
Median decision
8.3 wk

Most approved

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

Hertsmere

16% of the area
Approval rate
82%
Median decision
8.0 wk

Most approved

  • Ridge Height100%
  • Juliet Balcony100%
  • Render Cladding100%
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.”
CK
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.

1

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
2

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
3

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

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