Updated 22 October 2026 · 29 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.
29
New Leads (30 Days)
£157,759
Average Project Value
7
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 are the most common project type, appearing in 20 of the 29 leads tracked in the last 30 days, with Porches also showing consistent demand alongside Loft Conversions. Projects can fall into more than one category, so these figures don't need to add up to the total.
Most Active Architects and Planning Consultants in Harlow
The architects and planning consultants submitting the most construction-related applications in Harlow, based on recent planning records.
- 1Robert Blake Designs
- 2architecture & design services ltd.
- 3McBains
- 4SMART SKILLS LTD
- 5Frontier Architecture Ltd
- 6ABG Architects
- 7A.T. Design (Welwyn) Ltd
- 8M74 Consulting Engineers Ltd
- 9YPL UK LIMITED
- 10Archstruct
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 |
|---|---|---|---|---|
| Double Storey Extension | 74 Tilbury Mead Harlow Essex CM18 6JF | £100k–£250k | Erection of a double-storey rear extension. | Approved |
| Wrap-Around Extension | 14 Rye Hill Road Harlow Essex CM18 7JE | £100k–£250k | Construction of front and rear extensions, and two-storey side extension with remodelling. | Approved |
| Single Storey Front Extension | 100 Canons Gate Harlow Essex CM20 1QQ | Under £25k | Single-storey front extension to form an extended porch. | Approved |
| Wrap-Around Extension | 7 Herons Wood Harlow Essex CM20 1RW | £100k–£250k | Side and rear extensions with raised ridge to form first-floor accommodation and insertion of six rooflights. | Approved |
| Single Storey Side Extension | 13 Huntley Road Harlow Essex CM20 2PR | £50k–£100k | Single-storey side extension to join the house and garage. | Approved |
Double Storey Extension
74 Tilbury Mead Harlow Essex CM18 6JF
Erection of a double-storey rear extension.
Wrap-Around Extension
14 Rye Hill Road Harlow Essex CM18 7JE
Construction of front and rear extensions, and two-storey side extension with remodelling.
Single Storey Front Extension
100 Canons Gate Harlow Essex CM20 1QQ
Single-storey front extension to form an extended porch.
Wrap-Around Extension
7 Herons Wood Harlow Essex CM20 1RW
Side and rear extensions with raised ridge to form first-floor accommodation and insertion of six rooflights.
Single Storey Side Extension
13 Huntley Road Harlow Essex CM20 2PR
Single-storey side extension to join the house and garage.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | 7 Greenfinch Way Newhall Harlow Essex CM17 9FT | £50k–£100k | Construction of a side-facing subordinate dormer for a loft conversion with four roof-slope skylight windows. | Approved |
| Loft Conversion | 18 Whitewaits Harlow Essex CM20 3LJ | £50k–£100k | Proposed lawful development certificate for a single-storey rear extension and loft conversion incorporating a rear-facing box dormer. | Approved |
| Loft Conversion | 74 Ashworth Place Harlow Essex CM17 9PW | £100k–£250k | Proposed single-storey 3m rear extension with flat roof and roof lantern; loft conversion including rear dormer and front rooflights (certificate application). | Approved |
Loft Conversion
7 Greenfinch Way Newhall Harlow Essex CM17 9FT
Construction of a side-facing subordinate dormer for a loft conversion with four roof-slope skylight windows.
Loft Conversion
18 Whitewaits Harlow Essex CM20 3LJ
Proposed lawful development certificate for a single-storey rear extension and loft conversion incorporating a rear-facing box dormer.
Loft Conversion
74 Ashworth Place Harlow Essex CM17 9PW
Proposed single-storey 3m rear extension with flat roof and roof lantern; loft conversion including rear dormer and front rooflights (certificate application).
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Heritage | The Museum Of Harlow Muskham Road Harlow Essex CM20 2LF | £250k–£1m | Application to approve details reserved by condition 2 (new rooflights) relating to external repairs of the museum's pitched and flat roofs. | Approved |
| Garage Conversion | 5 Deer Park Harlow Essex CM19 4LB | £25k–£50k | Integral garage conversion and enclosure of covered porch to provide additional internal space. | Approved |
| Porch | 203 Arkwrights Harlow Essex CM20 3NB | Under £25k | Erection of a front porch and installation of a first-floor front window. | Unknown |
| New Build | Land East Of Windmill Fields Moor Hall Road Harlow Essex | £1m+ | Approval of details for condition 16 (external lighting) pursuant to permission for erection of 38 dwellings and associated works. | Unknown |
| New Build | Land East Of Windmill Fields Moor Hall Road Harlow Essex | £1m+ | Approval of details reserved by condition 15 (Residential Travel Information Pack) for the approved scheme for 38 dwellings (HW/FUL/22/00547). | Unknown |
Heritage
The Museum Of Harlow Muskham Road Harlow Essex CM20 2LF
Application to approve details reserved by condition 2 (new rooflights) relating to external repairs of the museum's pitched and flat roofs.
Garage Conversion
5 Deer Park Harlow Essex CM19 4LB
Integral garage conversion and enclosure of covered porch to provide additional internal space.
Porch
203 Arkwrights Harlow Essex CM20 3NB
Erection of a front porch and installation of a first-floor front window.
New Build
Land East Of Windmill Fields Moor Hall Road Harlow Essex
Approval of details for condition 16 (external lighting) pursuant to permission for erection of 38 dwellings and associated works.
New Build
Land East Of Windmill Fields Moor Hall Road Harlow Essex
Approval of details reserved by condition 15 (Residential Travel Information Pack) for the approved scheme for 38 dwellings (HW/FUL/22/00547).
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.
Single storey rear extension with alterations to the front elevation, including new front door and entrance canopy (Amended Proposal Description)
£100k–£250k74 Tilbury Mead Harlow Essex CM18 6JF
Erection of a double-storey rear extension.
Part demolition of existing dwelling. Construction of ground floor front and rear extensions with proposed first floor front extension and two-storey side extension together with remodelling of existing dwelling
£100k–£250k14 Rye Hill Road Harlow Essex CM18 7JE
Construction of front and rear extensions, and two-storey side extension with remodelling.
Erection of a single storey front extension for an extended porch
Under £25k100 Canons Gate Harlow Essex CM20 1QQ
Single-storey front extension to form an extended porch.
Construction of a side facing subordinate dormer for a loft conversion with 4 roof slope skylight windows
£50k–£100k7 Greenfinch Way Newhall Harlow Essex CM17 9FT
Construction of a side-facing subordinate dormer for a loft conversion with four roof-slope skylight windows.
Early-stage applications from across the town — most still in the planning phase.
See All 29 Construction Leads in Harlow
Unlock full project details and get in front of homeowners before the job goes out to quotes.
Get Access NowPlanning Application Status in Harlow
100%
Approved
0%
Pending
0%
Refused
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 applications submitted over the last 30 days.
Planning Approval Times in Harlow
Among applications tracked by BuildAlert in Harlow, the median time from submission to decision is 8 weeks. Smaller projects like extensions tend to be approved more quickly, while larger developments can take longer.
Based on approved applications with recorded decision dates over the last 3 months.
Domestic vs Commercial Projects in Harlow
In Harlow, the vast majority (83%) 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
Approved applications can be particularly valuable because the project has cleared a major planning hurdle and may be moving closer to construction.
Target Higher-Value Projects
Filter by estimated project value to focus your outreach on jobs that match the size and type of work your business takes on.
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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