Updated 26 July 2026 · 63 new leads in the last 30 days
Construction Leads in Islington
Find construction leads in Islington from live planning applications submitted across the borough. Identify homeowners in Barnsbury, Canonbury, Highbury, and Holloway planning building work before the project goes out to builders.
- Sourced from Islington Council planning records, refreshed regularly
- See projects at submission stage, before a builder has been chosen
- Direct contact with homeowners. No shared enquiries.
Data sourced from Islington Council planning records, updated regularly.
63
New Leads (30 Days)
£141,468
Average Project Value
20
High Value Projects
Over £100k
Extensions
Most Common Project
Construction Trends in Islington
Islington is one of the most densely built inner London boroughs, and the housing reflects that. Barnsbury and Canonbury are lined with Georgian and early-Victorian townhouses, many listed or within conservation areas, where tight plots and strict planning policies push demand toward basement excavations, internal reconfigurations, and carefully designed loft schemes. Highbury has a slightly different character, with larger Victorian terraces and semis that lend themselves more readily to rear extensions and dormer conversions. Holloway and Caledonian Road are more mixed, with a combination of Victorian terrace rows and post-war housing where the applications tend to be more practical in scope.
Project Type Breakdown
Below is a breakdown of the most common construction project types submitted to Islington Council over the past 30 days.
In Islington, Extensions account for the majority of planning applications (47 of 72 in the last 30 days), with Heritages also showing consistent demand alongside Garden Rooms.
Project Value Insights
Islington sits firmly in the higher band of London domestic project values. These ranges help you assess which leads are worth prioritising based on your team size and the type of work you take on.
- £25k – £50kInternal alterations, minor refurbishments, and smaller structural works
- £50k – £100kLoft conversions, rear extensions, and flat refurbishments
- £100k – £250kBasement conversions, whole-floor refurbishments, and double-storey additions
- £250k+Full townhouse renovations and basement excavations, particularly in Barnsbury and Canonbury
The highest-value work comes from Barnsbury, Canonbury, and Highbury, where Georgian and large Victorian properties command strong prices and owners invest accordingly.
Recent Planning Applications in Islington
Extensions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Single Storey Rear Extension | Greater London | £50k–£100k | Erection of a single storey rear extension. | Pending |
| Single Storey Rear Extension | Greater London | £100k–£250k | Enlargement of basement and single storey rear extension. | Pending |
| Front Extension | Greater London | £100k–£250k | Erection of additional storey and roof extension with front terrace. | Pending |
| Rear Extension | Greater London | £50k–£100k | Ground floor rear extension and first floor terrace addition. | Pending |
| Single Storey Rear Extension | Greater London | £50k–£100k | Erection of a single storey rear extension following the demolition of the existing structure. | Pending |
Single Storey Rear Extension
Greater London
Erection of a single storey rear extension.
Single Storey Rear Extension
Greater London
Enlargement of basement and single storey rear extension.
Front Extension
Greater London
Erection of additional storey and roof extension with front terrace.
Rear Extension
Greater London
Ground floor rear extension and first floor terrace addition.
Single Storey Rear Extension
Greater London
Erection of a single storey rear extension following the demolition of the existing structure.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | Flat B, 31 Ferntower Road, London, N5 2JE | £50k–£100k | Erection of a rear dormer roof extension and installation of two front roof lights. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Erection of a mansard roof extension. | Pending |
Loft Conversion
Flat B, 31 Ferntower Road, London, N5 2JE
Erection of a rear dormer roof extension and installation of two front roof lights.
Loft Conversion
Greater London
Erection of a mansard roof extension.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Heritage | Greater London | £100k–£250k | Internal and external refurbishment works to a Grade II listed end-of-terrace dwelling. | Pending |
| Heritage | Greater London | £50k–£100k | Listed Building Consent for construction of a lower ground floor extension. | Pending |
| Garden Room | 32 Harberton Road, London, N19 3JR | £25k–£50k | Erection of bike and bin storage outbuildings in front garden. | Pending |
| Heritage | 38 Compton Road, London, N1 2PB | £25k–£50k | Installation of rooftop air conditioning unit and internal works. | Pending |
| Heritage | 38 Compton Road, London, N1 2PB | £25k–£50k | Installation of rooftop air conditioning unit and internal works. | Pending |
Heritage
Greater London
Internal and external refurbishment works to a Grade II listed end-of-terrace dwelling.
Heritage
Greater London
Listed Building Consent for construction of a lower ground floor extension.
Garden Room
32 Harberton Road, London, N19 3JR
Erection of bike and bin storage outbuildings in front garden.
Heritage
38 Compton Road, London, N1 2PB
Installation of rooftop air conditioning unit and internal works.
Heritage
38 Compton Road, London, N1 2PB
Installation of rooftop air conditioning unit and internal works.
Data sourced from Islington Council planning records, updated regularly.
Featured Projects
A selection of live planning applications from across Islington that builders can act on now.
Erection of single storey rear extension
£50k–£100kGreater London
Erection of a single storey rear extension.
Enlargement of existing basement, single storey rear extension, replacement of e
£100k–£250kGreater London
Enlargement of basement and single storey rear extension.
Erection of additional storey/roof extension with front terrace
£100k–£250kGreater London
Erection of additional storey and roof extension with front terrace.
Ground floor rear extension, addition of a terrace to the first floor outrigger
£50k–£100kGreater London
Ground floor rear extension and first floor terrace addition.
Live Islington applications at a stage where making contact is worthwhile.
See All 63 Construction Leads in Islington
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Get Access NowPlanning Application Outcomes in Islington
10%
Approved
90%
Pending
0%
Rejected
In Islington, 10% of planning applications are approved, 90% are still pending, and 0% 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 Islington
In Islington, most planning applications are decided within 19 weeks. Smaller projects like extensions tend to be approved more quickly, while larger developments can take longer.
Domestic vs Commercial Projects in Islington
In Islington, the vast majority (90%) 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 Islington
Property values across Islington are high throughout, and owners here tend to invest seriously in their homes. Georgian townhouses in Barnsbury and Canonbury regularly sell for well over a million pounds, and buyers at that level expect to spend significantly on works after moving in. Because plots are small and above-ground extensions are often restricted or refused, the investment tends to go into what is already there: reconfiguring layouts, improving finishes, opening up below-ground space. In Highbury, where houses are slightly larger and gardens exist, extensions are more feasible and applications for them appear regularly.
How to Win Jobs in Islington
Contact Homeowners Early
Planning applications identify who is preparing to build across Islington. Getting in at the right stage gives you a clear advantage over builders who wait to be approached.
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 high-quality residential work in Islington through live planning data.
Track Planning Applications
We monitor Islington 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 active in Islington often work across Camden, Haringey, and Hackney too, all close enough to cover without stretching too far and producing a steady flow of similar residential projects.
Frequently Asked Questions
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