Updated 20 May 2026 · 452 new leads in the last 30 days
Construction Leads in Barnet
Browse construction leads in Barnet from recently published planning applications across the borough. See which homeowners are preparing building work and make contact while the project is still being planned.
- Built from Barnet Council planning submissions
- Find projects while homeowners are still shaping the brief
- No bidding platforms or shared enquiry lists
Data sourced from Barnet Council planning records and refreshed regularly.
452
New Leads (30 Days)
£143,431
Average Project Value
158
High Value Projects
Over £100k
Extensions
Most Common Project
Construction Trends in Barnet
Barnet has one of north London’s strongest suburban housing markets, with a broad mix of 1930s semis, Edwardian terraces, detached family homes, and larger properties on generous plots. New Barnet, Friern Barnet, and East Barnet often produce rear extensions, loft conversions, and side additions, while Mill Hill, Totteridge, and Hadley Wood bring through more substantial refurbishments and structural schemes. Around Finchley, Golders Green, and Hampstead Garden Suburb, older homes and conservation constraints can create more detailed planning applications for alterations, roof work, and carefully designed extensions.
Project Type Breakdown
The chart below shows recent planning applications in Barnet by project type, giving builders a clearer view of the domestic work currently moving through the borough.
In Barnet, Extensions account for the majority of planning applications (389 of 566 in the last 30 days), with Garden Rooms also showing consistent demand alongside Porches.
Project Value Insights
Project budgets in Barnet cover a wide range. These value bands help you focus on opportunities that fit your team, workload, and margins.
- £25k – £50kGarage conversions, garden studios, smaller rear additions, and internal upgrades
- £50k – £100kDormer loft conversions, side extensions, and larger single-storey works
- £100k – £250kTwo-storey extensions, wraparound additions, and substantial home refurbishments
- £250k+Major structural alterations, high-spec renovations, and large detached-home projects
Higher-value projects are more common around Totteridge, Hadley Wood, Mill Hill, and Hampstead Garden Suburb, where larger homes, premium finishes, and stronger renovation budgets can support more ambitious work.
Recent Planning Applications in Barnet
Extensions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Extension | London Borough of Barnet | £100k–£250k | Variation of condition for conversion of dwelling into 2 self-contained flats with extensions and modifications. | Approved |
| Rear Extension | London Borough of Barnet | £50k–£100k | Roof extension with rear dormer and front rooflights, including chimney removal. | Approved |
| Double Storey Extension | London Borough of Barnet | £250k–£1m | Part single, part two storey extensions with multiple alterations and rooflights. | Approved |
| Rear Extension | London Borough of Barnet | £50k–£100k | Roof extension with rear dormer window and multiple rooflights. | Approved |
| Single Storey Rear Extension | City of London | £100k–£250k | Single storey rear extension, roof extension with hip to gable, rear dormer window reduction, and garage conversion. | Approved |
Extension
London Borough of Barnet
Variation of condition for conversion of dwelling into 2 self-contained flats with extensions and modifications.
Rear Extension
London Borough of Barnet
Roof extension with rear dormer and front rooflights, including chimney removal.
Double Storey Extension
London Borough of Barnet
Part single, part two storey extensions with multiple alterations and rooflights.
Rear Extension
London Borough of Barnet
Roof extension with rear dormer window and multiple rooflights.
Single Storey Rear Extension
City of London
Single storey rear extension, roof extension with hip to gable, rear dormer window reduction, and garage conversion.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | London Borough of Barnet | £50k–£100k | Roof extension involving hip to gable with rear dormer and juliette balconies. | Refused |
| Loft Conversion | London Borough of Barnet | £50k–£100k | Roof extension with hip to gable and side dormers with juliette balcony. | Approved |
| Loft Conversion | Greater London | £50k–£100k | Roof extension with hip to gable, rear dormer, and skylights for loft conversion. | Pending |
| Loft Conversion | London | £100k–£250k | Prior approval for a single storey rear extension, new front porch, and roof extension. | Pending |
| Loft Conversion | Greater London | £100k–£250k | Roof extension involving hip to gable and rear dormer windows for loft conversion. | Pending |
Loft Conversion
London Borough of Barnet
Roof extension involving hip to gable with rear dormer and juliette balconies.
Loft Conversion
London Borough of Barnet
Roof extension with hip to gable and side dormers with juliette balcony.
Loft Conversion
Greater London
Roof extension with hip to gable, rear dormer, and skylights for loft conversion.
Loft Conversion
London
Prior approval for a single storey rear extension, new front porch, and roof extension.
Loft Conversion
Greater London
Roof extension involving hip to gable and rear dormer windows for loft conversion.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Heritage | London Borough of Barnet | £25k–£50k | Installation of external air-conditioning unit with timber enclosure. | Approved |
| Garden Room | City of London | £50k–£100k | Use of single storey rear outbuilding as a self-contained flat. | Pending |
| Garage Conversion | London Borough of Barnet | £25k–£50k | Conversion of garage to habitable room with new front porch. | Approved |
| Dropped Kerb | London Borough of Barnet | £25k–£50k | New front hardstanding and vehicular access for off-street parking. | Approved |
| Garage Conversion | London Borough of Barnet | £25k–£50k | Conversion of garage to outbuilding garden gym/office with roof alterations and new rooflights. | Approved |
Heritage
London Borough of Barnet
Installation of external air-conditioning unit with timber enclosure.
Garden Room
City of London
Use of single storey rear outbuilding as a self-contained flat.
Garage Conversion
London Borough of Barnet
Conversion of garage to habitable room with new front porch.
Dropped Kerb
London Borough of Barnet
New front hardstanding and vehicular access for off-street parking.
Garage Conversion
London Borough of Barnet
Conversion of garage to outbuilding garden gym/office with roof alterations and new rooflights.
Data sourced from Barnet Council planning records and refreshed regularly.
Featured Projects
A selection of recent planning applications from across Barnet that local builders can follow up on.
Variation of condition 1 (Approved Plans) of planning permission reference 23/5021/FUL dated 19/02/24 for 'Conversion of the existing dwelling into 2no self-contained flats including a single storey rear extension and mansard roof extension including front and rear dormers. Modifications to the rear access to maintain 1no. car parking space and external amenity space, cycle storage and refuse and recycling facilities.' Variation to include alterations at ground floor level to provide rear access to the shop unit
£100k–£250kLondon Borough of Barnet
Variation of condition for conversion of dwelling into 2 self-contained flats with extensions and modifications.
Roof extension involving rear dormer window and 2no. front facing rooflights. Chimney removal
£50k–£100kLondon Borough of Barnet
Roof extension with rear dormer and front rooflights, including chimney removal.
Part single, part two storey side and rear extensions with 3no. rooflights. Partial conversion of the existing garage. Alterations to front bay windows and introduction of new front bay windows. New front entrance including new roof canopy and columns with associated ramp. Alterations to existing fenestration and decorative detailing to elevations including brick slips and stone plinth. New side windows. Roof alteration and extension including roof lights, and side and rear dormer windows balconies and 1.8m privacy screen to both rear dormers. Installation of solar panels [AMENDED DESCRIPTION]
£250k–£1mLondon Borough of Barnet
Part single, part two storey extensions with multiple alterations and rooflights.
Installation of 1no. external air-conditioning condenser unit and associated timber enclosure (Listed Building Consent)
£25k–£50kLondon Borough of Barnet
Installation of external air-conditioning unit with timber enclosure.
Recent applications from across the borough that builders can follow up on.
See All 452 Construction Leads in Barnet
View full Barnet project details while homeowners are still shaping their plans.
Get Access NowPlanning Application Outcomes in Barnet
36%
Approved
56%
Pending
8%
Rejected
In Barnet, 36% of planning applications are approved, 56% are still pending, and 8% are rejected. Contacting homeowners early gives you the best chance of winning work.
Timing matters — earlier contact usually means less competition.
Based on planning application outcomes over the last 3 months.
Planning Approval Times in Barnet
In Barnet, most planning applications are decided within 8 weeks. Smaller projects like extensions tend to be approved more quickly, while larger developments can take longer.
Domestic vs Commercial Projects in Barnet
In Barnet, 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 Barnet
High property values in Barnet mean many owners treat building work as a serious long-term investment. Moving within north London can be expensive, so families often look to unlock more space from the home they already own. Older properties also create demand for wider upgrade work, including roofing, insulation, electrics, damp treatment, layout changes, kitchens, bathrooms, and full refurbishments alongside the more visible extension projects.
How to Win Jobs in Barnet
Contact Homeowners Early
Planning applications show who is preparing building work. Getting in touch at that stage helps you start the conversation before the project is widely quoted.
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
Three steps to start finding building work in Barnet through planning application data.
Track Planning Applications
We monitor Barnet Council and surrounding authorities daily for new residential projects.
Filter by Location & Type
Set your preferred areas, project types, and value range. See only relevant leads.
Contact Homeowners
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Nearby Areas
Builders working in Barnet often cover neighbouring north London boroughs too. Enfield, Haringey, Camden, and Harrow all sit within reach and bring through a useful mix of residential building work.
Frequently Asked Questions
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Find construction work in Barnet using planning data — no bidding platforms or shared enquiry lists.