Updated 13 July 2026 · 551 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.
551
New Leads (30 Days)
£153,876
Average Project Value
196
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 (456 of 689 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 |
|---|---|---|---|---|
| Single Storey Side Extension | London Borough of Barnet | £50k–£100k | Proposal for a single storey side extension. | Approved |
| Single Storey Side Extension | London Borough of Barnet | £50k–£100k | Single storey side extension following demolition of existing garage. | Approved |
| Extension | City of London | £100k–£250k | Conversion of garage to habitable room and multiple extensions including roof modifications. | Approved |
| Rear Extension | London Borough of Barnet | £50k–£100k | Alterations to front porch and first floor rear extension with juliette balcony. | Approved |
| Wrap-Around Extension | London Borough of Barnet | £100k–£250k | Single storey front extension, side garage extension, and part single, part two storey rear extension with roof extension. | Approved |
Single Storey Side Extension
London Borough of Barnet
Proposal for a single storey side extension.
Single Storey Side Extension
London Borough of Barnet
Single storey side extension following demolition of existing garage.
Extension
City of London
Conversion of garage to habitable room and multiple extensions including roof modifications.
Rear Extension
London Borough of Barnet
Alterations to front porch and first floor rear extension with juliette balcony.
Wrap-Around Extension
London Borough of Barnet
Single storey front extension, side garage extension, and part single, part two storey rear extension with roof extension.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | Greater London | £50k–£100k | Conversion of loft space with front and rear rooflights. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Roof extension involving hip to gable and rear dormer windows for loft conversion. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Roof extension with hip to gable and rear dormer, garage conversion. | Approved |
| Loft Conversion | Greater London | £50k–£100k | Roof extension involving hip to gable, rear dormer window, and front facing rooflights. | Approved |
| Loft Conversion | Greater London | £50k–£100k | Conversion of integral garage to habitable space with roof extension and dormer window. | Approved |
Loft Conversion
Greater London
Conversion of loft space with front and rear rooflights.
Loft Conversion
Greater London
Roof extension involving hip to gable and rear dormer windows for loft conversion.
Loft Conversion
Greater London
Roof extension with hip to gable and rear dormer, garage conversion.
Loft Conversion
Greater London
Roof extension involving hip to gable, rear dormer window, and front facing rooflights.
Loft Conversion
Greater London
Conversion of integral garage to habitable space with roof extension and dormer window.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| New Build | London Borough of Barnet | £250k–£1m | Variation of condition for approved plans regarding a new two storey dwelling with basement and changes to roofscape. | Refused |
| Dropped Kerb | London Borough of Barnet | £25k–£50k | Erection of front and side boundary walls with new access gate. | Refused |
| Garden Room | Greater London | £25k–£50k | Erection of a rear outbuilding following demolition of existing garages and alterations to landscaping for off-street parking. | Approved |
| Dropped Kerb | Greater London | £25k–£50k | Alterations to the driveway, vehicular access, and front garden with landscaping changes. | Approved |
| Garage Conversion | London | £25k–£50k | Conversion of garage into habitable room with new pitched roof. | Approved |
New Build
London Borough of Barnet
Variation of condition for approved plans regarding a new two storey dwelling with basement and changes to roofscape.
Dropped Kerb
London Borough of Barnet
Erection of front and side boundary walls with new access gate.
Garden Room
Greater London
Erection of a rear outbuilding following demolition of existing garages and alterations to landscaping for off-street parking.
Dropped Kerb
Greater London
Alterations to the driveway, vehicular access, and front garden with landscaping changes.
Garage Conversion
London
Conversion of garage into habitable room with new pitched roof.
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.
Single storey side extension and alterations to existing rear extension including raising of the roof height (AMENDED DESCRIPTION)
£50k–£100kLondon Borough of Barnet
Proposal for a single storey side extension.
Single storey side extension following demolition of the existing garage
£50k–£100kLondon Borough of Barnet
Single storey side extension following demolition of existing garage.
Variation of condition 1 (Approved Plans) of planning permission reference 25/2047/FUL dated 09/09/25 for 'Demolition of the existing dwelling and erection of a new two storey dwelling with basement level with a rear lightwell and walk on roof light and rooms in the roofspace.' Variation to include, increase in internal floor-to-ceiling heights, increase in ridge height, changes to windows and doors and roofscape, extension of the terrace area above the single storey flat roof; introduction of balcony to rear dormer window including alterations to approved dormer; alterations to the front porch including removal of the approved pitched roof (Amended Description)
£250k–£1mLondon Borough of Barnet
Variation of condition for approved plans regarding a new two storey dwelling with basement and changes to roofscape.
Conversion of garage into habitable room including insertion of windows to replace existing garage doors and addition of new pitched roof with rooflight. Two storey side extension following demolition of existing store. Roof extension including 1no. side dormer window, 1no. rear dormer window and 2no. front facing rooflights and increase in ridge height. Installation of solar panels. Alterations to ground floor rear projection including changes to fenestration and insertion of rooflights to flat roof. Addition of 1no. AC condenser unit and 1no. Air Source Heat Pump to side elevation. Removal of chimneys
£100k–£250kCity of London
Conversion of garage to habitable room and multiple extensions including roof modifications.
Recent applications from across the borough that builders can follow up on.
See All 551 Construction Leads in Barnet
View full Barnet project details while homeowners are still shaping their plans.
Get Access NowPlanning Application Outcomes in Barnet
35%
Approved
56%
Pending
9%
Rejected
In Barnet, 35% of planning applications are approved, 56% are still pending, and 9% 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 7 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 (95%) 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
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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.