Updated 26 July 2026 · 396 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
Get Local Construction LeadsHow It Works

Data sourced from Barnet Council planning records and refreshed regularly.

396

New Leads (30 Days)

£157,011

Average Project Value

144

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.

Extension
320
Garden Room
58
Porch
51
New Build
21
Garage Conversion
16
Dropped Kerb
13
Heritage
11
Loft Conversion
5

In Barnet, Extensions account for the majority of planning applications (320 of 495 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

Rear Extension

31 Hodford Road London NW11 8NL

£50k–£100kApproved

Alterations to front porch and first floor rear extension with juliette balcony.

Wrap-Around Extension

London Borough of Barnet

£100k–£250kApproved

Part single, part two storey side and rear extensions with a rear outbuilding.

Wrap-Around Extension

London Borough of Barnet

£250k–£1mApproved

Single storey side and rear extension, two storey side extension, and new front bay window.

Rear Extension

London

£100k–£250kRefused

First floor rear extension to both properties and change of ground floor roof from pitched to flat roof.

Rear Extension

Greater London

£50k–£100kApproved

Roof extension including rear dormer window with juliette balcony and rooflights.

Loft Conversions

Loft Conversion

Greater London

£50k–£100kApproved

Roof extension involving hip to gable, rear dormer window, and front facing rooflights.

Loft Conversion

Greater London

£50k–£100kApproved

Conversion of integral garage to habitable space with roof extension and dormer window.

Loft Conversion

Greater London

£100k–£250kPending

Conversion of 2 self-contained flats to 3 with roof extension and dormer.

Loft Conversion

1 Woodville Gardens London NW11 9ED

£50k–£100kPending

Roof extension involving hip to gable, rear dormer and front facing rooflights.

Loft Conversion

37 Church Way London N20 0JZ

£100k–£250kPending

Infill single storey side extension, two storey rear extension, roof extension with loft conversion, and garage conversion.

Other Projects

Garden Room

Greater London

£250k–£1mApproved

Demolition of existing dwelling and outbuildings, erection of a two storey dwelling with 3 self-contained flats.

New Build

Greater London

£250k–£1mApproved

Demolition of existing dwelling and construction of two new dwellings.

New Build

London

£1m+Refused

Variation of conditions for demolition and construction of flats and office space.

Garden Room

Greater London

£25k–£50kApproved

Erection of a rear outbuilding.

Garden Room

Greater London

£250k–£1mApproved

Variation of condition for a two-storey building with 9 self-contained flats.

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.

Alterations to existing front porch including new pitched roof and 2no rooflights. First floor rear extension with juliette balcony and pitched roof

£50k–£100k

31 Hodford Road London NW11 8NL

Alterations to front porch and first floor rear extension with juliette balcony.

Demolition of the existing dwelling and outbuildings and erection of a two storey dwelling with rooms in the roofspace to provide 3no. self-contained flats. Associated amenity space, refuse and recycling and cycle storage

£250k–£1m

Greater London

Demolition of existing dwelling and outbuildings, erection of a two storey dwelling with 3 self-contained flats.

Part single, part two storey side and rear extensions. Erection of a rear outbuilding following demolition of the existing garage

£100k–£250k

London Borough of Barnet

Part single, part two storey side and rear extensions with a rear outbuilding.

Single storey side and rear extension. Two storey side extension. New front bay window extension following removal of existing bay window. Alterations to front entrance

£250k–£1m

London Borough of Barnet

Single storey side and rear extension, two storey side extension, and new front bay window.

Recent applications from across the borough that builders can follow up on.

See All 396 Construction Leads in Barnet

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Planning Application Outcomes in Barnet

42%

Approved

48%

Pending

10%

Rejected

In Barnet, 42% of planning applications are approved, 48% are still pending, and 10% 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

Average approval time7 weeks
Typical residential projects7 weeks
New builds8 weeks

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

Domestic95%
Commercial5%

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

Set your preferred areas, project types, and value range. See only relevant leads.

Contact Homeowners

Get contact details and send letters or emails directly to homeowners before your competitors.

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

How do I find construction work in Barnet without relying on lead generation sites?
Are Barnet planning applications available to look at?
What kinds of building jobs are most common in Barnet?
Is there a good time to get in touch with homeowners once they have applied for planning permission?
Will I be competing with lots of other builders for the same leads?

Start Getting Construction Leads in Barnet Today

Find construction work in Barnet using planning data — no bidding platforms or shared enquiry lists.