Updated 13 July 2026 · 46 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.
46
New Leads (30 Days)
£106,250
Average Project Value
9
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 (34 of 49 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 | London | £50k–£100k | Demolition of existing single storey rear extension and construction of a wider extension. | Pending |
| Extension | London | £250k–£1m | Approval of details for conditions related to a proposed mansard extension creating 7 self-contained flats. | Approved |
| Extension | Greater London | £50k–£100k | Construction of new glazed extensions and replacement of existing doors with sash windows. | Approved |
| Wrap-Around Extension | Greater London | £50k–£100k | Proposed single storey infill rear/side wraparound extension following demolition. | Pending |
| Rear Extension | Greater London | £100k–£250k | Erection of a rear outrigger and basement extension, replacement of single glazing. | Pending |
Single Storey Rear Extension
London
Demolition of existing single storey rear extension and construction of a wider extension.
Extension
London
Approval of details for conditions related to a proposed mansard extension creating 7 self-contained flats.
Extension
Greater London
Construction of new glazed extensions and replacement of existing doors with sash windows.
Wrap-Around Extension
Greater London
Proposed single storey infill rear/side wraparound extension following demolition.
Rear Extension
Greater London
Erection of a rear outrigger and basement extension, replacement of single glazing.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | Greater London | £50k–£100k | Certificate of lawfulness for proposed rear dormer extension and single storey. | Pending |
Loft Conversion
Greater London
Certificate of lawfulness for proposed rear dormer extension and single storey.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Heritage | London | £25k–£50k | Listed building consent for completed works including replacement. | Pending |
| Heritage | Greater London | £25k–£50k | Consent for repairing and repainting sash windows. | Pending |
| Garden Room | London | £25k–£50k | Proposal for the erection of an outbuilding/pod and associated works. | Pending |
| Heritage | London | Under £25k | Certificate of lawfulness for proposed use of ground floor as Class F1 (a) for education. | Pending |
| Heritage | Greater London | £250k–£1m | Extensive alterations including replacement windows, roof insulation, and internal layout changes. | Approved |
Heritage
London
Listed building consent for completed works including replacement.
Heritage
Greater London
Consent for repairing and repainting sash windows.
Garden Room
London
Proposal for the erection of an outbuilding/pod and associated works.
Heritage
London
Certificate of lawfulness for proposed use of ground floor as Class F1 (a) for education.
Heritage
Greater London
Extensive alterations including replacement windows, roof insulation, and internal layout changes.
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.
Listed building consent for works completed in August 2025 for the replacement o
£25k–£50kLondon
Listed building consent for completed works including replacement.
Demolition of existing single storey rear extension and construction of full wid
£50k–£100kLondon
Demolition of existing single storey rear extension and construction of a wider extension.
Certificate of lawfulness (Proposed) for rear dormer extension and single storey
£50k–£100kGreater London
Certificate of lawfulness for proposed rear dormer extension and single storey.
Listed Building Consent for repairing and repainting sash windows, replacing the
£25k–£50kGreater London
Consent for repairing and repainting sash windows.
Live Islington applications at a stage where making contact is worthwhile.
See All 46 Construction Leads in Islington
Get full project details and reach homeowners before other builders are in the conversation.
Get Access NowPlanning Application Outcomes in Islington
11%
Approved
89%
Pending
0%
Rejected
In Islington, 11% of planning applications are approved, 89% 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 17 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 (91%) 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
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Contact Homeowners
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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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