Updated 13 July 2026 · 217 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.
217
New Leads (30 Days)
£192,640
Average Project Value
90
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 account for the majority of planning applications (145 of 278 in the last 30 days), with Heritages also showing consistent demand alongside Loft Conversions.
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 | City of London | £50k–£100k | Certificate for lawful development for part demolition of bathroom and extension for new dining room. | Approved |
| Single Storey Rear Extension | London Borough of Southwark | £100k–£250k | Regularisation of changes to the second floor and mansard roof, including demolition of a single storey rear extension. | Withdrawn |
| Single Storey Side Extension | Greater London | £25k–£50k | Details of Condition 3 'Joinery details' for demolition and construction of a new single-storey side extension. | Approved |
| Single Storey Rear Extension | London | £50k–£100k | Certificate of lawfulness for a proposed single-storey rear extension. | Withdrawn |
| Rear Extension | Greater London | £50k–£100k | Demolition of existing conservatory and construction of a ground floor rear extension. | Approved |
Extension
City of London
Certificate for lawful development for part demolition of bathroom and extension for new dining room.
Single Storey Rear Extension
London Borough of Southwark
Regularisation of changes to the second floor and mansard roof, including demolition of a single storey rear extension.
Single Storey Side Extension
Greater London
Details of Condition 3 'Joinery details' for demolition and construction of a new single-storey side extension.
Single Storey Rear Extension
London
Certificate of lawfulness for a proposed single-storey rear extension.
Rear Extension
Greater London
Demolition of existing conservatory and construction of a ground floor rear extension.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | London Borough of Southwark | £100k–£250k | Variation to design conditions for a part single, part two storey side/rear extension and loft conversion. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Non-material amendment for a part single, part two-storey side/rear extension and loft conversion. | Approved |
| Loft Conversion | Greater London | £50k–£100k | Construction of L-shaped rear dormer roof extension and installation of two rooflights on front roof slope. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Erection of a single-storey ground-floor rear extension, loft conversion, and roof terrace. | Approved |
| Loft Conversion | Greater London | £50k–£100k | Certificate of lawful development for a loft conversion with rear L-shaped dormer and rooflights. | Approved |
Loft Conversion
London Borough of Southwark
Variation to design conditions for a part single, part two storey side/rear extension and loft conversion.
Loft Conversion
Greater London
Non-material amendment for a part single, part two-storey side/rear extension and loft conversion.
Loft Conversion
Greater London
Construction of L-shaped rear dormer roof extension and installation of two rooflights on front roof slope.
Loft Conversion
Greater London
Erection of a single-storey ground-floor rear extension, loft conversion, and roof terrace.
Loft Conversion
Greater London
Certificate of lawful development for a loft conversion with rear L-shaped dormer and rooflights.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| New Build | City of London | £100k–£250k | Change of use of upper floors to provide 2 residential units with external alterations. | Approved |
| Garden Room | London Borough of Southwark | £1m+ | Partial discharge of condition for mixed-use redevelopment including student housing and café. | Approved |
| Heritage | Greater London | £250k–£1m | Details of condition for restoration and refurbishment of listed terraces for office use. | Approved |
| Garden Room | London | £25k–£50k | Construction of a single outbuilding in the rear garden. | Approved |
| Garden Room | Greater London | £250k–£1m | Discharge of Condition 3(b) 'Remediation strategy' for change of use from bus depot to waste vehicle depot. | Approved |
New Build
City of London
Change of use of upper floors to provide 2 residential units with external alterations.
Garden Room
London Borough of Southwark
Partial discharge of condition for mixed-use redevelopment including student housing and café.
Heritage
Greater London
Details of condition for restoration and refurbishment of listed terraces for office use.
Garden Room
London
Construction of a single outbuilding in the rear garden.
Garden Room
Greater London
Discharge of Condition 3(b) 'Remediation strategy' for change of use from bus depot to waste vehicle depot.
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.
Details of condition 3 (Construction Environmental Management Plan) as required by planning permission 22/AP/3670 granted on 28.11.2025 for: (Change of use of upper floors from use class E to provide 2 residential units together with external alterations).
£100k–£250kCity of London
Change of use of upper floors to provide 2 residential units with external alterations.
Details (partial, in respect of Phase 1 'Self Storage' only) to satisfy Condition 16 ' Landscape Ecological Management Plan' required by 23/AP/1317: 'Demolition of the existing building and mixed use redevelopment of the site comprising Purpose-Built Student Housing including associated amenity and ancillary café and cycle workshop (Use Class Sui Generis), a new self-storage facility (Use Class B8), light Industrial workspace / incubator units (Use Class E(g)(iii)) and other associated infrastructure.'
£1m+London Borough of Southwark
Partial discharge of condition for mixed-use redevelopment including student housing and café.
Certificate of Lawful Development (Existing) to confirm the presence of the rear extension for more than 4 years with no alterations
£50k–£100kCity of London
Certificate for lawful development for part demolition of bathroom and extension for new dining room.
Regularisation of internal and external changes to the second floor and mansard roof, implemented without discharge of pre-commencement conditions. Demolition of existing lower ground floor rear single storey extension, widening of opening between LGF rear rooms, and erection of new single storey rear extension. Replacement of uPVC doors and windows throughout.
£100k–£250kLondon Borough of Southwark
Regularisation of changes to the second floor and mansard roof, including demolition of a single storey rear extension.
Recent applications from across the borough at a stage where reaching out makes sense.
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Get Access NowPlanning Application Outcomes in Southwark
40%
Approved
57%
Pending
3%
Rejected
In Southwark, 40% of planning applications are approved, 57% are still pending, and 3% are rejected. Contacting homeowners early gives you the best chance of winning work.
Getting in touch earlier puts you in a stronger position before others step in.
Based on planning application outcomes over the last 3 months.
Planning Approval Times in Southwark
In Southwark, 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 Southwark
In Southwark, the vast majority (81%) 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 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
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 residential building work in Southwark through live planning data.
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We monitor Southwark Council and surrounding authorities daily for new residential projects.
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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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