Updated 8 October 2026 · 171 new leads in the last 30 days
Construction Leads in Southwark
Find construction leads in Southwark from planning applications submitted across the borough. Get in front of homeowners in Peckham, Dulwich, Camberwell, and beyond before they start talking to builders.
- Drawn from Southwark Council planning data, refreshed regularly
- See projects from the point of application, not just approval
- Approach homeowners directly with no platform in the way
Data sourced from Southwark Council planning records, updated regularly.
171
New Leads (30 Days)
£267,160
Average Project Value
77
High Value Projects
Over £100k
Extensions
Most Common Project
Construction Trends in Southwark
Southwark stretches from the Thames south through some very different neighbourhoods. Peckham, Nunhead, and Camberwell are dense with Victorian terraces on narrow plots, and these streets produce a consistent flow of planning applications for loft conversions and rear additions. Dulwich is a different story entirely: large detached and semi-detached Victorian and Edwardian houses, some conservation areas, and owners who tend to invest heavily in their properties. Bermondsey and Rotherhithe, closer to the river, have seen significant regeneration and a mix of converted warehouse flats, older terraces, and newer builds that produce a more varied range of applications.
Project Type Breakdown
Below is a breakdown of the most common construction project types submitted to Southwark Council over the past 30 days.
In Southwark, Extensions are the most common project type, appearing in 102 of the 171 leads tracked in the last 30 days, with Loft Conversions also showing consistent demand alongside Heritages. 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 Southwark
The architects and planning consultants submitting the most construction-related applications in Southwark, based on recent planning records.
- 1DP9
- 2ojma
- 3PLANSTUDIO ARCHITECTURE
- 4Rolfe Judd Planning
- 5Resi Design Ltd
- 6Yosha Design LTD
- 7BWCP Architects
- 8Design Squared Ltd
- 9GOAStudio London residential architecture limited
- 10Turley
Project Value Insights
Project values vary considerably across Southwark depending on the neighbourhood. These ranges help you identify which leads are worth prioritising given your team size and target margin.
- £25k – £50kGarage conversions, garden rooms, and smaller rear additions on tighter plots
- £50k – £100kLoft conversions, rear extensions, and flat refurbishments
- £100k – £250kSide and rear combinations, double-storey additions, and larger refurbishments
- £250k+Full-house renovations and high-specification schemes, particularly in Dulwich and Herne Hill
The highest-value work is concentrated in Dulwich Village, East Dulwich, and Herne Hill, where larger properties and established renovation budgets support more ambitious projects.
Recent Planning Applications in Southwark
Extensions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Extension | Flat 13 Devon House 1 Maidstone Buildings Mews London Southwark SE1 1GE | £50k–£100k | Extension of existing top floor flat with a dormer and deck terrace, including installation of windows and skylights. | Approved |
| Extension | Flat 13 Devon House 1 Maidstone Buildings Mews London Southwark SE1 1GE | £50k–£100k | Listed building consent for the extension of existing top floor flat with a dormer and deck terrace. | Approved |
| Side Extension | 358-384 Old Kent Road London Southwark SE1 5AA | £250k–£1m | Details of internal noise level condition for mansard roof extension providing 9 new residential dwellings. | Approved |
| Rear Extension | 15 Colnbrook Street London Southwark SE1 6EZ | £100k–£250k | First-floor rear extension and various upgrades and repairs to the existing property. | Approved |
| Rear Extension | Greater London | £100k–£250k | Listed building consent for first-floor rear extension and associated alterations. | Approved |
Extension
Flat 13 Devon House 1 Maidstone Buildings Mews London Southwark SE1 1GE
Extension of existing top floor flat with a dormer and deck terrace, including installation of windows and skylights.
Extension
Flat 13 Devon House 1 Maidstone Buildings Mews London Southwark SE1 1GE
Listed building consent for the extension of existing top floor flat with a dormer and deck terrace.
Side Extension
358-384 Old Kent Road London Southwark SE1 5AA
Details of internal noise level condition for mansard roof extension providing 9 new residential dwellings.
Rear Extension
15 Colnbrook Street London Southwark SE1 6EZ
First-floor rear extension and various upgrades and repairs to the existing property.
Rear Extension
Greater London
Listed building consent for first-floor rear extension and associated alterations.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | 84 Lyndhurst Way London Southwark SE15 5AP | £50k–£100k | Erection of a side roof dormer and internal alterations. | Approved |
| Loft Conversion | Greater London | £50k–£100k | Proposed loft conversion with rear L shape dormer and new terrace. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Amendment to planning approval for a rear side infill extension and loft conversion. | Approved |
| Loft Conversion | 22 Chesterfield Grove London Southwark SE22 8RW | £100k–£250k | L-shaped loft extension with increase to ridge height and ground floor wrap-around extension. | Approved |
| Loft Conversion | 2 Landells Road London Southwark SE22 9PG | £100k–£250k | Ground floor side infill extension and loft conversion with L-shape dormer. | Approved |
Loft Conversion
84 Lyndhurst Way London Southwark SE15 5AP
Erection of a side roof dormer and internal alterations.
Loft Conversion
Greater London
Proposed loft conversion with rear L shape dormer and new terrace.
Loft Conversion
Greater London
Amendment to planning approval for a rear side infill extension and loft conversion.
Loft Conversion
22 Chesterfield Grove London Southwark SE22 8RW
L-shaped loft extension with increase to ridge height and ground floor wrap-around extension.
Loft Conversion
2 Landells Road London Southwark SE22 9PG
Ground floor side infill extension and loft conversion with L-shape dormer.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Garden Room | 47 Barry Road London Southwark SE22 0HR | £25k–£50k | Construction of a single-storey garden studio outbuilding for use as home office, ancillary storage and home gym. | Approved |
| Garden Room | Greater London | £100k–£250k | Installation of a single storey detached garden room in the rear garden for therapy purposes. | Withdrawn |
| New Build | 40-46 Solomons Passage London Southwark SE15 3UH | £1m+ | Details of condition 41 for a residential development of 91 units. | Approved |
| Heritage | Greater London | £25k–£50k | Consent for like-for-like replacement of windows in a listed building. | Approved |
| Garden Room | 257-283 Ilderton Road London Southwark SE15 1NS | £1m+ | Approval of details for self-storage phase related to mixed-use redevelopment including student housing and café. | Approved |
Garden Room
47 Barry Road London Southwark SE22 0HR
Construction of a single-storey garden studio outbuilding for use as home office, ancillary storage and home gym.
Garden Room
Greater London
Installation of a single storey detached garden room in the rear garden for therapy purposes.
New Build
40-46 Solomons Passage London Southwark SE15 3UH
Details of condition 41 for a residential development of 91 units.
Heritage
Greater London
Consent for like-for-like replacement of windows in a listed building.
Garden Room
257-283 Ilderton Road London Southwark SE15 1NS
Approval of details for self-storage phase related to mixed-use redevelopment including student housing and café.
Data sourced from Southwark Council planning records, updated regularly.
Featured Projects
A selection of recent planning applications from across Southwark that builders can follow up on now.
Extension of existing top floor flat into the terrace, erection of a dormer to the southern side of the building with a deck terrace including the creation of a new walkway to accommodate the fire exit, and installation of windows, double doors and skylights (Revision of approved application no. 25/AP/1640).
£50k–£100kFlat 13 Devon House 1 Maidstone Buildings Mews London Southwark SE1 1GE
Extension of existing top floor flat with a dormer and deck terrace, including installation of windows and skylights.
Listed Building Consent for works to the party wall of Wiltshire House as part of the associated planning application 26/AP/0842 for the 'extension of existing top floor flat into the terrace including the creation of a new walkway to accommodate the fire exit, erection of a dormer to the southern side of the building with a deck terrace, and installation of windows, double doors and skylights' at flat 13, Devon House. (revised description)
£50k–£100kFlat 13 Devon House 1 Maidstone Buildings Mews London Southwark SE1 1GE
Listed building consent for the extension of existing top floor flat with a dormer and deck terrace.
Construction of a single-storey garden studio outbuilding for use as home office, ancillary storage and home gym
£25k–£50k47 Barry Road London Southwark SE22 0HR
Construction of a single-storey garden studio outbuilding for use as home office, ancillary storage and home gym.
Construction of single storey outbuilding to the rear garden to serve as therapy room, with associated platform lift.
£100k–£250kGreater London
Installation of a single storey detached garden room in the rear garden for therapy purposes.
Recent applications from across the borough at a stage where reaching out makes sense.
See All 171 Construction Leads in Southwark
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Get Access NowPlanning Application Status in Southwark
55%
Approved
44%
Pending
1%
Refused
Most planning applications in Southwark are approved, meaning a large proportion of these projects go ahead and become real building jobs. This creates strong opportunities for builders who contact homeowners early.
Getting in touch earlier puts you in a stronger position before others step in.
Based on planning applications submitted over the last 30 days.
Planning Approval Times in Southwark
Among applications tracked by BuildAlert in Southwark, the median time from submission to decision is 8 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 Southwark
In Southwark, 67% of planning applications are domestic and 33% are commercial. Both segments offer opportunities depending on the scale of work you take on.
Demand for Building Work in Southwark
Southwark sits close to the City and London Bridge, and that proximity has pushed property values up across much of the borough over the past decade. Buyers in Peckham and Nunhead in particular have arrived expecting to do work, and many plan extensions or loft schemes within the first couple of years of owning. In Dulwich, where properties are larger and values higher, owners are more likely to undertake substantial refurbishments rather than single-room additions. Across the borough, the cost of moving on is steep enough that most people choose to improve what they have.
How to Win Jobs in Southwark
Contact Homeowners Early
Planning applications identify who is getting ready to build across Southwark. Reaching out at the right time puts you ahead of builders who wait to be found.
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 residential building work in Southwark through live planning data.
Track Planning Applications
We monitor Southwark 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 across Southwark often take on projects in Lewisham, Lambeth, and Greenwich too, all within comfortable reach and producing similar volumes of residential work.
Frequently Asked Questions
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