Updated 8 August 2026 · 25 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.
25
New Leads (30 Days)
£101,500
Average Project Value
6
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 (16 of 31 in the last 30 days), with Garden Rooms also showing consistent demand alongside Porches.
Most Active Planning Agents in Harlow
The architects and planning agents submitting the most applications in Harlow, based on recent planning records.
- 1Harlow Council Environmental Services
- 2JMS Planning & Development Ltd
- 3SMART SKILLS LTD
- 4Hill Partnerships Ltd
- 5Design Designed Ltd
- 6Herts&EssexTree Care
- 7Carter Jonas
- 8Robert Blake Designs
- 9Ceres Property
- 10Gateley Smithers Purslow
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 |
|---|---|---|---|---|
| Front Extension | Harlow | £25k–£50k | Construction of a front porch extension and covered storage area. | Approved |
| Wrap-Around Extension | Harlow | £100k–£250k | Construction of two-storey side extensions and a single storey rear extension. | Refused |
| Single Storey Rear Extension | Harlow | £50k–£100k | Prior approval for construction of a single storey rear extension. | Approved |
| Single Storey Rear Extension | Harlow | £50k–£100k | Prior approval for a single storey rear extension of 6m. | Approved |
| Single Storey Front Extension | Harlow | £100k–£250k | Construction of a single storey front extension, rear extension, and part first floor extension. | Approved |
Front Extension
Harlow
Construction of a front porch extension and covered storage area.
Wrap-Around Extension
Harlow
Construction of two-storey side extensions and a single storey rear extension.
Single Storey Rear Extension
Harlow
Prior approval for construction of a single storey rear extension.
Single Storey Rear Extension
Harlow
Prior approval for a single storey rear extension of 6m.
Single Storey Front Extension
Harlow
Construction of a single storey front extension, rear extension, and part first floor extension.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | Harlow | £50k–£100k | Proposed loft conversion with addition of rear dormer. | Approved |
| Loft Conversion | 101 Fennells Harlow Essex CM19 4RW | £50k–£100k | Proposed loft conversion with rear dormer and skylights. | Approved |
Loft Conversion
Harlow
Proposed loft conversion with addition of rear dormer.
Loft Conversion
101 Fennells Harlow Essex CM19 4RW
Proposed loft conversion with rear dormer and skylights.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| New Build | Harlow | £25k–£50k | Approval of details for structural and remedial repairs to Roof A as per planning permission HW/LBC/24/00374. | Approved |
| Garage Conversion | Harlow | £25k–£50k | Conversion of internal garage to office space. | Approved |
| Garden Room | 55 Sheering Road Harlow Essex CM17 0JN | £25k–£50k | Erection of a single-storey detached garden outbuilding for golf simulator use. | Unknown |
| Garage Conversion | 45 Whieldon Grange Harlow Essex CM17 9WG | £25k–£50k | Garage conversion to an annex ancillary to the dwelling house. | Unknown |
| Heritage | Skins Farm Barn Skins Farm Roydon Road Harlow Essex CM19 5DU | Under £25k | Installation of EV charging point and trench digging for electric meter. | Withdrawn |
New Build
Harlow
Approval of details for structural and remedial repairs to Roof A as per planning permission HW/LBC/24/00374.
Garage Conversion
Harlow
Conversion of internal garage to office space.
Garden Room
55 Sheering Road Harlow Essex CM17 0JN
Erection of a single-storey detached garden outbuilding for golf simulator use.
Garage Conversion
45 Whieldon Grange Harlow Essex CM17 9WG
Garage conversion to an annex ancillary to the dwelling house.
Heritage
Skins Farm Barn Skins Farm Roydon Road Harlow Essex CM19 5DU
Installation of EV charging point and trench digging for electric meter.
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.
Construction of a front porch extension and covered bin storage area
£25k–£50kHarlow
Construction of a front porch extension and covered storage area.
Construction of 2 no. two-storey side extensions, single storey rear extension, crown roof to existing front projecting garage & front porch canopy
£100k–£250kHarlow
Construction of two-storey side extensions and a single storey rear extension.
Loft Conversion & addition of rear dormer
£50k–£100kHarlow
Proposed loft conversion with addition of rear dormer.
Construction of a single storey rear extension, conservatory to be demolished
£50k–£100kHarlow
Prior approval for construction of a single storey rear extension.
Early-stage applications from across the town — most still in the planning phase.
See All 25 Construction Leads in Harlow
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Get Access NowPlanning Application Outcomes in Harlow
90%
Approved
0%
Pending
10%
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 6 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 (88%) 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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