Updated 22 October 2026 · 51 new leads in the last 30 days
Construction Leads in Southampton
Access construction leads in Southampton by tracking newly submitted planning applications. See which homeowners and developers across the city are preparing extensions, loft conversions, and new builds, and get in touch before they begin shortlisting builders.
- New planning applications added frequently from Southampton City Council
- Connect with homeowners at the early planning stage
- No shared enquiries or competitive bidding
Data sourced from Southampton City Council planning records and refreshed regularly.
51
New Leads (30 Days)
£170,098
Average Project Value
18
High Value Projects
Over £100k
Extensions
Most Common Project
Construction Trends in Southampton
Southampton's status as a major port and university city shapes its construction market heavily. The city has a large blanket Article 4 Direction covering its main student neighbourhoods — Portswood, Highfield, Inner Avenue, and parts of Polygon — removing permitted development rights for converting family homes into HMOs, which keeps a steady stream of full planning applications moving through those wards. The city centre has seen a wave of new-build apartment towers and mixed-use redevelopment in recent years, alongside waterside regeneration around Ocean Village and the marina. Woolston and the Itchen waterside, across the water from the city centre, continue to see residential redevelopment on former industrial land, while the city's Victorian and Edwardian suburbs generate a steadier flow of standard extensions and loft conversions.
Project Type Breakdown
Here's a breakdown of the most common types of construction projects in Southampton over the past 30 days.
In Southampton, Extensions are the most common project type, appearing in 40 of the 51 leads tracked in the last 30 days, with Loft Conversions also showing consistent demand alongside New Builds. 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 Southampton
The architects and planning consultants submitting the most construction-related applications in Southampton, based on recent planning records.
- 1RS Studio
- 2Applecore PDM
- 3David Windsor
- 4MDT Design
- 5Archisolve
- 6B Heer
- 7ML DESIGN
- 8AC Design
- 9Knight Consulting
- 10Jem Musselwhite Ltd
Project Value Insights
Understanding typical project values in Southampton helps you prioritise the most profitable leads and manage your workload effectively. These ranges are a general guide to the scale of work involved — individual project costs vary by design, specification, and site conditions.
- £25k – £50kSmall extensions, porches, and internal alterations
- £50k – £100kRear extensions and loft conversions
- £100k – £250kLarge extensions and full property refurbishments
- £250k+New builds and high-end residential projects
Higher-value projects are often found around Ocean Village and the city’s Victorian and Edwardian suburbs, where larger properties and waterside plots are more common.
Recent Planning Applications in Southampton
Extensions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Double Storey Extension | 17 Northam Road Southampton SO14 0NZ | £100k–£250k | Erection of a replacement 2-storey rear extension to facilitate conversion into 2 flats with associated parking. | Approved |
| Single Storey Rear Extension | 13 St James Park Road Southampton SO16 6HL | £50k–£100k | Erection of a single-storey rear infill extension with roof alterations and dormer. | Approved |
| Single Storey Front Extension | 200 Burgess Road Southampton SO16 3AY | £50k–£100k | Erection of a single-storey outdoor seating structure to the front and replacement of a single-storey rear extension. | Approved |
| Double Storey Extension | 121 St Mary Street Southampton SO14 1PG | £100k–£250k | Permitted development prior approval sought to add one additional storey to provide one two-bedroom flat. | Refused |
| Single Storey Rear Extension | 30 Ashby Road Southampton SO19 1DR | £50k–£100k | Erection of a single-storey rear extension. | Approved |
Double Storey Extension
17 Northam Road Southampton SO14 0NZ
Erection of a replacement 2-storey rear extension to facilitate conversion into 2 flats with associated parking.
Single Storey Rear Extension
13 St James Park Road Southampton SO16 6HL
Erection of a single-storey rear infill extension with roof alterations and dormer.
Single Storey Front Extension
200 Burgess Road Southampton SO16 3AY
Erection of a single-storey outdoor seating structure to the front and replacement of a single-storey rear extension.
Double Storey Extension
121 St Mary Street Southampton SO14 1PG
Permitted development prior approval sought to add one additional storey to provide one two-bedroom flat.
Single Storey Rear Extension
30 Ashby Road Southampton SO19 1DR
Erection of a single-storey rear extension.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | 3 Pentire Avenue Southampton SO15 7RR | £50k–£100k | Erection of a first-floor side extension and roof extension to facilitate a loft conversion. | Approved |
| Loft Conversion | Southampton | £50k–£100k | Lawful development certificate for proposed roof extension including rear hip-to-gable and side dormers to facilitate a loft conversion and associated external alterations. | Approved |
| Loft Conversion | 7 South East Crescent Southampton SO19 8PR | £50k–£100k | Full planning for a single-storey rear and roof extension to facilitate a loft conversion with rear Juliet balcony. | Approved |
| Loft Conversion | 27 Mill Road Southampton SO15 4JB | £100k–£250k | Part two-storey, part single-storey side/rear and front extensions with hip-to-gable and rear dormer to facilitate loft conversion (amendment to approved 25/01159/FUL). | Pending |
| Loft Conversion | 63 Maldon Road Southampton SO19 7AF | £100k–£250k | Loft conversion with roof alterations and side dormer plus a single-storey rear extension. | Pending |
Loft Conversion
3 Pentire Avenue Southampton SO15 7RR
Erection of a first-floor side extension and roof extension to facilitate a loft conversion.
Loft Conversion
Southampton
Lawful development certificate for proposed roof extension including rear hip-to-gable and side dormers to facilitate a loft conversion and associated external alterations.
Loft Conversion
7 South East Crescent Southampton SO19 8PR
Full planning for a single-storey rear and roof extension to facilitate a loft conversion with rear Juliet balcony.
Loft Conversion
27 Mill Road Southampton SO15 4JB
Part two-storey, part single-storey side/rear and front extensions with hip-to-gable and rear dormer to facilitate loft conversion (amendment to approved 25/01159/FUL).
Loft Conversion
63 Maldon Road Southampton SO19 7AF
Loft conversion with roof alterations and side dormer plus a single-storey rear extension.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| New Build | 92 Merryoak Road Southampton SO19 7QN | £100k–£250k | Approval of details reserved by conditions for the erection of 2 semi-detached houses. | Approved |
| New Build | Horseshoe Park Horseshoe Bridge Southampton | £1m+ | Reserved matters application for a 6-storey building with up to 47 flats. | Approved |
| Garden Room | Holy Trinity Church Weston Lane Southampton SO19 9HG | £25k–£50k | Installation of a shipping container to be used as a parish office ancillary to the existing church and centre. | Withdrawn |
| New Build | 94 & 96 Bellemoor Road Southampton SO15 7QU | £250k–£1m | Erection of two 2-bedroom dwellings with associated amenities. | Refused |
| New Build | 22 - 28 Onslow Road Southampton SO14 0JG | £1m+ | Approval of reserved details (materials, window recesses, balconies, parapet/roof construction, landscaping, lighting and balcony privacy screening) for the 16-flat permission (22/01016/FUL). | Approved |
New Build
92 Merryoak Road Southampton SO19 7QN
Approval of details reserved by conditions for the erection of 2 semi-detached houses.
New Build
Horseshoe Park Horseshoe Bridge Southampton
Reserved matters application for a 6-storey building with up to 47 flats.
Garden Room
Holy Trinity Church Weston Lane Southampton SO19 9HG
Installation of a shipping container to be used as a parish office ancillary to the existing church and centre.
New Build
94 & 96 Bellemoor Road Southampton SO15 7QU
Erection of two 2-bedroom dwellings with associated amenities.
New Build
22 - 28 Onslow Road Southampton SO14 0JG
Approval of reserved details (materials, window recesses, balconies, parapet/roof construction, landscaping, lighting and balcony privacy screening) for the 16-flat permission (22/01016/FUL).
Data sourced from Southampton City Council planning records and refreshed regularly.
Featured Projects
A snapshot of recent construction opportunities across Southampton.
Erection of a replacement 2-storey rear extension to facilitate conversion into 2 flats (1x 1-bed, 1x 3-bed), with associated parking and cycle/refuse storage.
£100k–£250k17 Northam Road Southampton SO14 0NZ
Erection of a replacement 2-storey rear extension to facilitate conversion into 2 flats with associated parking.
Application for approval of details reserved by conditions 11 (nitrate neutrality), 12 (water and energy), 15(Sustainable Drainage Systems), 18(Land Contamination investigation and remediation) and 19(Use of Uncontaminated Soils and Fill) of permission 23/01174/FUL for erection of 2x 3-bed semi-detached houses.
£100k–£250k92 Merryoak Road Southampton SO19 7QN
Approval of details reserved by conditions for the erection of 2 semi-detached houses.
Erection of a single-storey rear extension, single-storey side extension, roof alterations including the formation of a dormer, and the regularisation of the use as a 6-bed house in multiple occupation (Class C4). (Amended description after validation)
£50k–£100k13 St James Park Road Southampton SO16 6HL
Erection of a single-storey rear infill extension with roof alterations and dormer.
Reserved matters application seeking approval for appearance and landscaping, following outline planning permission ref: 22/00988/OUT for erection of a 6-storey building comprising up to 47 flats with associated parking and cycle/refuse storage
£1m+Horseshoe Park Horseshoe Bridge Southampton
Reserved matters application for a 6-storey building with up to 47 flats.
Examples of projects at an early stage before wider competition builds.
See All 51 Construction Leads in Southampton
Unlock full details and connect with homeowners while projects are still taking shape.
Get Access NowPlanning Application Status in Southampton
54%
Approved
40%
Pending
6%
Refused
Most planning applications in Southampton 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.
Earlier contact usually means less competition.
Based on planning applications submitted over the last 30 days.
Planning Approval Times in Southampton
Among applications tracked by BuildAlert in Southampton, 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 Southampton
In Southampton, 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 Southampton
Southampton's city centre continues to attract new-build apartment schemes, supporting demand for groundworkers, steel erectors, and finishing trades on larger residential towers. The Article 4 Direction across Portswood, Highfield, Inner Avenue, and Polygon has pushed HMO conversion work through the full planning system rather than permitted development, keeping demand steady for planning-related building work in those wards. As with the rest of the Solent coast, some new residential schemes across the city are affected by nutrient neutrality rules protecting the Solent and River Itchen, adding a mitigation step to larger developments.
How to Win Jobs in Southampton
Contact Homeowners Early
Planning applications highlight upcoming work, giving you a chance to get in touch before builders are shortlisted.
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 simple steps to start winning more construction work in Southampton.
Track Planning Applications
We monitor Southampton City Council and surrounding authorities daily for new residential projects.
Filter by Location & Type
Set your preferred areas, project types, and value range. See only relevant leads.
Contact Homeowners
Get contact details and send letters or emails directly to homeowners before your competitors.
Nearby Areas
Builders based in Southampton often take on work in nearby Hampshire areas such as Eastleigh, New Forest, and Test Valley, helping maintain a consistent flow of projects.
Frequently Asked Questions
Start Getting Construction Leads in Southampton Today
Start accessing planning-based construction leads without relying on shared lead platforms.