Updated 8 October 2026 · 80 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.
80
New Leads (30 Days)
£150,781
Average Project Value
22
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 are the most common project type, appearing in 47 of the 80 leads tracked in the last 30 days, with Heritages also showing consistent demand alongside Loft Conversions. Projects can fall into more than one category, so these figures don't need to add up to the total.
Most Active Architects and Planning Consultants in Islington
The architects and planning consultants submitting the most construction-related applications in Islington, based on recent planning records.
- 1Faithorn Farrell Timms LLP
- 2Bluelime
- 3MoreSpace
- 4Francesco Zafarana Architect
- 5Roger Mears Architects
- 6Room Studio Architecture and Interior Design Ltd.
- 7Frost Architects
- 8Anna Janiak Studio Ltd.
- 9Trevor Brown Architect
- 10Arc Associates Architecture Limited
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 |
|---|---|---|---|---|
| Rear Extension | 456, Holloway Road, London, N7 6QA | £50k–£100k | First-floor rear extension and internal alterations to enlarge existing Sui Generis HMO from 9 to 10 bedrooms with shared communal facilities and secure cycle parking. | Pending |
| Extension | City of London | £1m+ | EIA scoping for demolition of Bavaria House and construction of a hotel tower (c.34,295 m2 GIA) with basement and public realm enhancements. | Pending |
| Rear Extension | 66 St Paul Street, London, N1 7DA | £100k–£250k | Lower ground floor rear extension and partial excavation of rear terrace to provide a new kitchen. | Pending |
| Rear Extension | 84 Mercers Road, London, N19 4PR | £50k–£100k | Householder full planning for replacement patio doors, creation of terrace above rear closet wing with metal railings, replacement of first-floor sash window with door and fanlight, timber window upgrades and rooflights to front and rear roof slopes. | Pending |
| Single Storey Side Extension | 4 Prospero Road, London, N19 3RF | £50k–£100k | Erection of single-storey side-return infill extension with associated internal alterations. | Pending |
Rear Extension
456, Holloway Road, London, N7 6QA
First-floor rear extension and internal alterations to enlarge existing Sui Generis HMO from 9 to 10 bedrooms with shared communal facilities and secure cycle parking.
Extension
City of London
EIA scoping for demolition of Bavaria House and construction of a hotel tower (c.34,295 m2 GIA) with basement and public realm enhancements.
Rear Extension
66 St Paul Street, London, N1 7DA
Lower ground floor rear extension and partial excavation of rear terrace to provide a new kitchen.
Rear Extension
84 Mercers Road, London, N19 4PR
Householder full planning for replacement patio doors, creation of terrace above rear closet wing with metal railings, replacement of first-floor sash window with door and fanlight, timber window upgrades and rooflights to front and rear roof slopes.
Single Storey Side Extension
4 Prospero Road, London, N19 3RF
Erection of single-storey side-return infill extension with associated internal alterations.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | North Villa Adjacent 38, Windsor Road, London | £100k–£250k | Erection of a mansard roof extension to provide additional roof/loft accommodation. | Pending |
| Loft Conversion | Flat C, 60 Seven Sisters Road, London, N7 6AA | £50k–£100k | Loft conversion with rear dormer extension. | Pending |
| Loft Conversion | 15, Canning Road, London, N5 2JR | £50k–£100k | Full householder application for erection of a mansard roof extension. | Pending |
| Loft Conversion | Flat B, 33 Landseer Road, London, N19 4JU | £50k–£100k | Erection of rear dormer roof extension and installation of front rooflights to Flat B. | Pending |
| Loft Conversion | 63 Mayton Street, London, N7 6QP | £50k–£100k | Certificate of lawfulness (proposed) for an enlarged rear dormer roof extension and two front rooflights. | Pending |
Loft Conversion
North Villa Adjacent 38, Windsor Road, London
Erection of a mansard roof extension to provide additional roof/loft accommodation.
Loft Conversion
Flat C, 60 Seven Sisters Road, London, N7 6AA
Loft conversion with rear dormer extension.
Loft Conversion
15, Canning Road, London, N5 2JR
Full householder application for erection of a mansard roof extension.
Loft Conversion
Flat B, 33 Landseer Road, London, N19 4JU
Erection of rear dormer roof extension and installation of front rooflights to Flat B.
Loft Conversion
63 Mayton Street, London, N7 6QP
Certificate of lawfulness (proposed) for an enlarged rear dormer roof extension and two front rooflights.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Heritage | 86 Highbury New Park, London | £25k–£50k | Listed building consent for replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm and emergency lighting, and replacement electrical cupboard. | Pending |
| Garden Room | Basement Flat, 7 Huddleston Road, London, N7 0RE | Under £25k | Erection of a single-storey rear garden outbuilding. | Approved |
| Heritage | 88 St John Street, London, EC1M 4EH | £25k–£50k | Listed building works to enlarge opening between rear restaurant area and kitchen, reorganise the commercial kitchen and relocate the cold store. | Pending |
| Garden Room | Flat 1, 19 Dunford Road, London, N7 6EP | £25k–£50k | Retrospective application for a garden room (outbuilding) in the rear garden. | Pending |
| Heritage | 16 THORNHILL SQUARE LONDON N1 1BQ | £25k–£50k | Internal works to a listed building: install parquet and patterned tiles, replace sanitary fittings and modest reconfiguration of first-floor shower room and bathroom. | Pending |
Heritage
86 Highbury New Park, London
Listed building consent for replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm and emergency lighting, and replacement electrical cupboard.
Garden Room
Basement Flat, 7 Huddleston Road, London, N7 0RE
Erection of a single-storey rear garden outbuilding.
Heritage
88 St John Street, London, EC1M 4EH
Listed building works to enlarge opening between rear restaurant area and kitchen, reorganise the commercial kitchen and relocate the cold store.
Garden Room
Flat 1, 19 Dunford Road, London, N7 6EP
Retrospective application for a garden room (outbuilding) in the rear garden.
Heritage
16 THORNHILL SQUARE LONDON N1 1BQ
Internal works to a listed building: install parquet and patterned tiles, replace sanitary fittings and modest reconfiguration of first-floor shower room and bathroom.
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 a first-floor rear extension and associated internal alterations to facilitate the enlargement of the existing Sui Generis House in Multiple Occupation (HMO) from 9 to 10 bedrooms, including the provision of shared communal facilities and secure cycle parking
£50k–£100k456, Holloway Road, London, N7 6QA
First-floor rear extension and internal alterations to enlarge existing Sui Generis HMO from 9 to 10 bedrooms with shared communal facilities and secure cycle parking.
Request for a Scoping Opinion under Regulation 15 of the Town and Country Planning (Environmental Impact Assessment Regulations 2017) relating to a proposal for the demolition of the existing Bavaria House (including existing basement) and the construction of a hotel tower to provide the following: Hotel (Use Class C1); Total floorspace of approximately 34,295m2 (Gross Internal Area (GIA)); Extensive public realm enhancements including hard and soft landscaping; and Proposed basement extension. [Hackney Reference: 2026/1663]
£1m+City of London
EIA scoping for demolition of Bavaria House and construction of a hotel tower (c.34,295 m2 GIA) with basement and public realm enhancements.
Proposed lower ground floor extension to existing rear garden to provide new kitchen and partial excavation of rear terrace.
£100k–£250k66 St Paul Street, London, N1 7DA
Lower ground floor rear extension and partial excavation of rear terrace to provide a new kitchen.
Replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm system and emergency lighting, and replacement electrical cupboard.
£25k–£50k86 Highbury New Park, London
Listed building consent for replacement of internal flat entrance doors, architraves and fanlights, installation of new fire alarm and emergency lighting, and replacement electrical cupboard.
Live Islington applications at a stage where making contact is worthwhile.
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Get Access NowPlanning Application Status in Islington
14%
Approved
86%
Pending
0%
Refused
In Islington, 14% of planning applications are approved, 86% are still pending, and 0% are refused. Pending applications can give builders an opportunity to make contact while projects are still at an early stage.
Earlier contact usually means less competition.
Based on planning applications submitted over the last 30 days.
Planning Approval Times in Islington
Among applications tracked by BuildAlert in Islington, the median time from submission to decision is 32 weeks. Smaller projects like extensions tend to be approved more quickly, while larger developments can take longer.
Based on approved applications with recorded decision dates over the last 3 months.
Domestic vs Commercial Projects in Islington
In Islington, 63% of planning applications are domestic and 38% are commercial. Both segments offer opportunities depending on the scale of work you take on.
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
Approved applications can be particularly valuable because the project has cleared a major planning hurdle and may be moving closer to construction.
Target Higher-Value Projects
Filter by estimated project value to focus your outreach on jobs that match the size and type of work your business takes on.
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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