Updated 8 October 2026 · 61 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.
61
New Leads (30 Days)
£126,639
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 53 of the 61 leads tracked in the last 30 days, with Loft Conversions also showing consistent demand alongside Garden Rooms. 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
- 5AC Design
- 6B Heer
- 7Knight Consulting
- 8Archisolve
- 9Jem Musselwhite Ltd
- 10ML DESIGN
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 |
|---|---|---|---|---|
| Extension | 11 Brookvale Road Southampton SO17 1QN | £250k–£1m | Alterations and extensions to create a 3-storey building with 6 one-bedroom flats. | Approved |
| 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 | 48 Seafield Road Southampton SO16 9NT | £50k–£100k | Prior approval for a single storey rear extension with a maximum depth of 6m. | Refused |
| 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 |
| Extension | 88 Pinegrove Road Southampton SO19 2PR | £50k–£100k | Extension of garage and conversion to a 1-bedroom dwelling with parking. | Refused |
Extension
11 Brookvale Road Southampton SO17 1QN
Alterations and extensions to create a 3-storey building with 6 one-bedroom flats.
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
48 Seafield Road Southampton SO16 9NT
Prior approval for a single storey rear extension with a maximum depth of 6m.
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.
Extension
88 Pinegrove Road Southampton SO19 2PR
Extension of garage and conversion to a 1-bedroom dwelling with parking.
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 | 293 Coxford Road Southampton SO16 5LD | £50k–£100k | Full planning to change dwelling (Class C3) to HMO (Class C4) with loft conversion, rear dormer, roof alterations and a single-storey rear extension. | Pending |
| Loft Conversion | Southampton | £50k–£100k | Loft conversion with roof alterations and rear dormer together with a single-storey rear extension. | Pending |
| Loft Conversion | 46 Devonshire Road Southampton SO15 2GN | £50k–£100k | Single-storey rear extension and flat roof box dormer to facilitate change of use from C4 HMO to an 8-person Sui Generis HMO with associated storage. | 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
293 Coxford Road Southampton SO16 5LD
Full planning to change dwelling (Class C3) to HMO (Class C4) with loft conversion, rear dormer, roof alterations and a single-storey rear extension.
Loft Conversion
Southampton
Loft conversion with roof alterations and rear dormer together with a single-storey rear extension.
Loft Conversion
46 Devonshire Road Southampton SO15 2GN
Single-storey rear extension and flat roof box dormer to facilitate change of use from C4 HMO to an 8-person Sui Generis HMO with associated storage.
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 |
| Garden Room | 47 Vale Drive Southampton SO18 4SW | £25k–£50k | Retrospective application for the erection of an outbuilding. | 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 |
| Heritage | 171 - 172 High Street Southampton SO14 2BY | £100k–£250k | Listed building consent for internal and external works to enable change of use to a restaurant, hot food takeaway and family games space, including outdoor seating and installation of an extraction flue. | Pending |
New Build
92 Merryoak Road Southampton SO19 7QN
Approval of details reserved by conditions for the erection of 2 semi-detached houses.
Garden Room
47 Vale Drive Southampton SO18 4SW
Retrospective application for the erection of an outbuilding.
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.
Heritage
171 - 172 High Street Southampton SO14 2BY
Listed building consent for internal and external works to enable change of use to a restaurant, hot food takeaway and family games space, including outdoor seating and installation of an extraction flue.
Data sourced from Southampton City Council planning records and refreshed regularly.
Featured Projects
A snapshot of recent construction opportunities across Southampton.
Alterations and extensions to form a 3-storey building comprising 6x 1-bed flats
£250k–£1m11 Brookvale Road Southampton SO17 1QN
Alterations and extensions to create a 3-storey building with 6 one-bedroom flats.
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.
Erection of a single storey rear extension (Max Depth 6m, Max Height 3.25m, Eaves Height 3.25m)
£50k–£100k48 Seafield Road Southampton SO16 9NT
Prior approval for a single storey rear extension with a maximum depth of 6m.
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.
Examples of projects at an early stage before wider competition builds.
See All 61 Construction Leads in Southampton
Unlock full details and connect with homeowners while projects are still taking shape.
Get Access NowPlanning Application Status in Southampton
53%
Approved
42%
Pending
5%
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 7 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, 72% of planning applications are domestic and 28% are commercial. Both segments offer opportunities depending on the scale of work you take on.
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
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Contact Homeowners
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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
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