Updated 25 June 2026 · 23 new leads in the last 30 days
Construction Leads in Harlow
Find construction leads in Harlow from live planning applications across the town. See which homeowners are preparing building projects and make contact while they are still deciding who to hire.
- Planning applications pulled directly from Harlow Council records
- Act on projects before homeowners start asking for quotes
- Direct outreach — no lead-sharing platforms or bidding involved
Planning data sourced from Harlow Council records and refreshed on a regular basis.
23
New Leads (30 Days)
£129,348
Average Project Value
5
High Value Projects
Over £100k
Extensions
Most Common Project
Construction Trends in Harlow
Harlow is largely a new town, which means much of the housing stock dates from the 1950s through to the 1980s — terraced homes, low-rise flats, and semi-detached council-era houses spread across distinct neighbourhoods. The planned layout leaves less room for wraparound extensions, but rear single-storey additions are common. Garage conversions are particularly active here given the number of properties built with integral or detached garages. There is also growing activity around full internal reconfigurations as residents bring older layouts up to modern standards.
Project Type Breakdown
A breakdown of recent planning submissions across Harlow, based on applications filed with the council.
In Harlow, Extensions account for the majority of planning applications (18 of 28 in the last 30 days), with Porches also showing consistent demand alongside Loft Conversions.
Project Value Insights
Project values in Harlow tend to be on the practical end of the spectrum — most jobs are focused, well-defined, and sit in the lower-to-mid range for Essex.
- £15k – £35kGarage conversions, utility extensions, and small internal works
- £35k – £70kSingle-storey rear extensions and kitchen refits
- £70k – £150kDouble extensions, full refurbishments, and structural alterations
- £150k+New build plots and larger residential development projects
Higher-value work tends to come from the newer residential developments around Church Langley and Katherines, where detached homes command larger budgets than the older town-centre estates.
Recent Planning Applications in Harlow
Extensions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Single Storey Side Extension | Harlow | £50k–£100k | Construction of a single storey side extension. | Approved |
| Single Storey Rear Extension | Harlow | £50k–£100k | Construction of a single storey flat roof rear extension. | Approved |
| Single Storey Rear Extension | Harlow | £50k–£100k | Proposed single storey rear extension. | Refused |
| Side Extension | Harlow | £50k–£100k | Demolish existing lean-to and build new side extension in its footprint. | Approved |
| Single Storey Rear Extension | Harlow | £50k–£100k | Proposed single storey rear extension. | Approved |
Single Storey Side Extension
Harlow
Construction of a single storey side extension.
Single Storey Rear Extension
Harlow
Construction of a single storey flat roof rear extension.
Single Storey Rear Extension
Harlow
Proposed single storey rear extension.
Side Extension
Harlow
Demolish existing lean-to and build new side extension in its footprint.
Single Storey Rear Extension
Harlow
Proposed single storey rear extension.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | Harlow | £50k–£100k | Loft conversion for additional living space. | Approved |
| Loft Conversion | Harlow | £50k–£100k | Proposed loft conversion with addition of rear dormer. | Unknown |
Loft Conversion
Harlow
Loft conversion for additional living space.
Loft Conversion
Harlow
Proposed loft conversion with addition of rear dormer.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Heritage | Harlow | £250k–£1m | Change of use of existing outbuilding from residential to office use with associated parking. | Approved |
| Porch | Harlow | £25k–£50k | Proposed porch infill and new pitched roof. | Approved |
| Garage Conversion | Harlow | £25k–£50k | Conversion of the existing garage into habitable accommodation with internal connection. | Approved |
| New Build | Harlow | £250k–£1m | Approval of details reserved by condition for the construction of 14 council houses. | Approved |
| New Build | Harlow | £25k–£50k | Approval of details for structural and remedial repairs to Roof A as per planning permission HW/LBC/24/00374. | Unknown |
Heritage
Harlow
Change of use of existing outbuilding from residential to office use with associated parking.
Porch
Harlow
Proposed porch infill and new pitched roof.
Garage Conversion
Harlow
Conversion of the existing garage into habitable accommodation with internal connection.
New Build
Harlow
Approval of details reserved by condition for the construction of 14 council houses.
New Build
Harlow
Approval of details for structural and remedial repairs to Roof A as per planning permission HW/LBC/24/00374.
Planning data sourced from Harlow Council records and refreshed on a regular basis.
Featured Projects
Recent planning activity from across Harlow, highlighting projects at an early stage.
Application for approval of details reserved by condition 4 (Details of Insulation) of listed building consent HW/LBC/23/00110 for the Conversion of existing curtilage listed ancillary barn into 2 no. semi-detached dwellings including removal of greenhouse, new openings/windows/doors, new rooflights, new package sewage treatment plant, widening of courtyard hardstanding and associated landscaping.
£250k–£1mHarlow
Change of use of existing outbuilding from residential to office use with associated parking.
Construction of a single storey side extension
£50k–£100kHarlow
Construction of a single storey side extension.
Construction of a single storey flat roof rear extension
£50k–£100kHarlow
Construction of a single storey flat roof rear extension.
Proposed Single storey rear extension
£50k–£100kHarlow
Proposed single storey rear extension.
Early-stage applications from across the town — most still in the planning phase.
See All 23 Construction Leads in Harlow
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Get Access NowPlanning Application Outcomes in Harlow
93%
Approved
0%
Pending
7%
Rejected
Most planning applications in Harlow are approved, meaning a large proportion of these projects go ahead and become real building jobs. This creates strong opportunities for builders who contact homeowners early.
Reaching out while applications are still active helps you get ahead of the pack.
Based on planning application outcomes over the last 3 months.
Planning Approval Times in Harlow
In Harlow, most planning applications are decided within 7 weeks. Smaller projects like extensions tend to be approved more quickly, while larger developments can take longer.
Domestic vs Commercial Projects in Harlow
In Harlow, the vast majority (96%) of planning applications are domestic projects such as extensions and loft conversions. Commercial developments make up a smaller portion but can offer higher-value opportunities for larger contractors.
Demand for Building Work in Harlow
Harlow has seen renewed investment interest as transport links to London have improved, bringing in buyers who see value in the town's relatively affordable prices. That uptick in ownership has translated into building activity — people who have bought recently are now looking to make the homes work better for them. Projects tend to be practical in scope rather than aspirational, which suits builders who can price sharp and move quickly through jobs.
How to Win Jobs in Harlow
Contact Homeowners Early
New planning applications flag who is preparing to build — giving you the chance to make contact before anyone else does.
Focus on Approved Applications
Prioritise leads that have already received planning approval. These homeowners are ready to hire and start work.
Target Higher-Value Projects
Filter for projects over £50k. Fewer builders compete for larger jobs, giving you better margins and longer contracts.
How BuildAlert Works
How to use planning data to find and win construction work in Harlow.
Track Planning Applications
We monitor Harlow Council and surrounding authorities daily for new residential projects.
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Contact Homeowners
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Nearby Areas
Builders based in or around Harlow often extend into Epping Forest and Hertfordshire. The towns below generate enough activity to keep a pipeline running alongside local work.
Frequently Asked Questions
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