Updated 26 July 2026 · 168 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.
168
New Leads (30 Days)
£236,377
Average Project Value
75
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 (109 of 205 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 | Greater London | £1m+ | Details of condition for redevelopment including office building extensions and public realm works. | Approved |
| Extension | London | £100k–£250k | Non-material amendment for external alterations and updates to previously approved designs. | Approved |
| Rear Extension | London | £100k–£250k | Construction of ground and first floor rear extension. | Approved |
| Extension | Greater London | £50k–£100k | Non-material amendment for changes to approved plans of a new dwellinghouse. | Approved |
| Wrap-Around Extension | Greater London | £100k–£250k | Construction of side and rear extension at ground floor level with internal alterations. | Approved |
Extension
Greater London
Details of condition for redevelopment including office building extensions and public realm works.
Extension
London
Non-material amendment for external alterations and updates to previously approved designs.
Rear Extension
London
Construction of ground and first floor rear extension.
Extension
Greater London
Non-material amendment for changes to approved plans of a new dwellinghouse.
Wrap-Around Extension
Greater London
Construction of side and rear extension at ground floor level with internal alterations.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| 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 | £100k–£250k | Loft conversion including removal of chimney stacks and rebuilding the gable wall with rear dormer and rooflights. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Single storey wraparound rear extension and loft conversion with mansard dormer. | Approved |
| Loft Conversion | Greater London | £100k–£250k | Rear extension, loft conversion, new window to side elevation, and roof lights. | Approved |
| Loft Conversion | Greater London | £50k–£100k | Certificate of lawfulness for proposed single storey rear extension and loft conversion. | Approved |
Loft Conversion
Greater London
Erection of a single-storey ground-floor rear extension, loft conversion, and roof terrace.
Loft Conversion
Greater London
Loft conversion including removal of chimney stacks and rebuilding the gable wall with rear dormer and rooflights.
Loft Conversion
Greater London
Single storey wraparound rear extension and loft conversion with mansard dormer.
Loft Conversion
Greater London
Rear extension, loft conversion, new window to side elevation, and roof lights.
Loft Conversion
Greater London
Certificate of lawfulness for proposed single storey rear extension and loft conversion.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Garden Room | 257-283 Ilderton Road London Southwark SE15 1NS | £1m+ | Partial discharge of condition for mixed-use redevelopment including student housing and café. | Approved |
| Heritage | Greater London | £50k–£100k | Partial discharge of condition for refurbishment of existing dwelling. | 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 |
| Garden Room | London | £100k–£250k | Minor material amendment for subdivision of a residential unit into two self-contained dwellings. | Approved |
Garden Room
257-283 Ilderton Road London Southwark SE15 1NS
Partial discharge of condition for mixed-use redevelopment including student housing and café.
Heritage
Greater London
Partial discharge of condition for refurbishment of existing dwelling.
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.
Garden Room
London
Minor material amendment for subdivision of a residential unit into two self-contained dwellings.
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 (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+257-283 Ilderton Road London Southwark SE15 1NS
Partial discharge of condition for mixed-use redevelopment including student housing and café.
Partial discharge of condition 3i 'New window' required by listed building consent ref no. 25/AP/2470 'Full refurbishment of existing dwelling including new opening between the ground floor rooms, infilling of the existing kitchen door and refurbishment of all windows and front door, replacement of shutters, new iron railings and gate, new timber sash window. New floor, wall and ceiling finishes as well as a new bathroom and kitchen'.
£50k–£100kGreater London
Partial discharge of condition for refurbishment of existing dwelling.
Details of condition 6 'DLP and DEMP' as required by planning permission ref. 24/AP/3803 dated ref. 25/11/2025 for 'Redevelopment of the site to include: - Redevelopment of the existing 1980s office building with partial demolition (including demolition of the St Thomas Street entrance building and the King's Head Yard facade); the construction of side extensions and upward extension to add 5 storeys and create a 10-storey office building plus plant, balconies and roof terraces; - Redevelopment of Keats House (nos. 24-26 St Thomas Street) with retention of the historic frontage and construction of a roof extension to add one storey of office floorspace; - Restoration and refurbishment of the listed Georgian terrace (nos. 4-16 St ThomasStreet) to create level front entrances to the offices, internal alterations and new glazed roof to the rear courtyard (with separate LBC application ref. 24/AP/3804); - Associated public realm and highway works to St Thomas Street and King's Head Yard, cycle parking and all ancillary works'.
£1m+Greater London
Details of condition for redevelopment including office building extensions and public realm works.
Non-material amendment to planning permission ref. 25/AP/1718 dated 03/09/2025 for 'External alterations including the addition of lift overruns at roof level; the erection of plant equipment and enclosures at roof level; the construction of a gable end wall; alterations to fenestration; and associated works'. The amendments include the following: Updates to gates, doors and windows, including removal of some existing elements, replacement with new units in revised positions and revisions to approved designs. Standardisation of window and door frames to ensure a consistent appearance across the site. Changes to openings, including blocking up a doorway in matching brick and replacing a window with a new glazed door and sidelight. Fire safety improvements, including changing some windows to side-opening (casement) and adding a vision panel to a door. Changes to wall finishes, including replacing and extending render. Localised wall repairs and rebuilds, including rebuilding a wall in London buff brick and repairing damaged planter walls with matching materials. Removal of previously approved plant, including omission of the generator enclosure and flue. Like-for-like roof works, including rebuilding roofs, replacing a deteriorated metal roof, reconstructing mansards and dormers, and renewing roof finishes.
£100k–£250kLondon
Non-material amendment for external alterations and updates to previously approved designs.
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
44%
Approved
55%
Pending
1%
Rejected
In Southwark, 44% of planning applications are approved, 55% are still pending, and 1% 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 (82%) 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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