Updated 29 October 2026 · 71 new leads in the last 30 days
Construction Leads in Cardiff
Find construction leads in Cardiff from new planning applications across the city centre, Cardiff Bay and the wider council area.
- New planning applications added frequently from Cardiff Council
- Connect with homeowners at the early planning stage
- No shared enquiries or competitive bidding
Data sourced from Cardiff Council planning records and refreshed regularly.
71
New Leads (30 Days)
£98,944
Average Project Value
15
High Value Projects
Over £100k
Extensions
Most Common Project
Construction Trends in Cardiff
Cardiff Council has approved a five year regeneration strategy covering Adamsdown and Splott, Butetown, and Plasnewydd, three neighbourhoods identified among the most deprived in Wales. In Grangetown, Channel View has planning approval for 228 new homes across six phases, with the first phase of 126 flats for older residents due by late 2026. On the edge of the city, Plasdwr is a 900 acre site planned for up to 7,000 homes over roughly 15 years, while Curran Embankment has a proposal for around 2,500 homes on a 40 acre riverside site. Away from these large schemes, Pontprennau and Llandaff keep a steady flow of extensions and loft conversions on established housing.
Project Type Breakdown
Here's a breakdown of the most common types of construction projects in Cardiff over the past 30 days.
In Cardiff, Extensions are the most common project type, appearing in 40 of the 71 leads tracked in the last 30 days, with Heritages also showing consistent demand alongside Loft Conversions. 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 Cardiff
The architects and planning consultants submitting the most construction-related applications in Cardiff, based on recent planning records.
- 1Alwyn Jones Architects
- 2DB3 Architects
- 3Amity Planning
- 4Ashley Davies Architects Limited
- 5AtkinsRéalis
- 6Asbri Planning Ltd.
- 7Austin-Smith:Lord
- 8James King Architects
- 9C2J Architects & Town Planners
- 10Stephen Quin Architects
Project Value Insights
Understanding typical project values in Cardiff 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 the newer sites at Plasdwr and Curran Embankment, where new-build plots are more common.
Recent Planning Applications in Cardiff
Extensions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Double Storey Extension | Cardiff | £100k–£250k | Demolition of existing conservatory and construction of part two-storey/part single storey rear extension. | Approved |
| Extension | Cardiff | £250k–£1m | Ground and first floor extensions to create 4 additional flats, totaling 10. | Approved |
| Single Storey Rear Extension | Cardiff | £50k–£100k | Retention of a single storey rear extension and rear dormer roof extension with rooflight and new window. | Approved |
| Rear Extension | Cardiff | £50k–£100k | First-floor rear extension to create an additional studio. | Approved |
| Single Storey Rear Extension | Cardiff | £50k–£100k | Single-storey rear extension to the dwelling. | Approved |
Double Storey Extension
Cardiff
Demolition of existing conservatory and construction of part two-storey/part single storey rear extension.
Extension
Cardiff
Ground and first floor extensions to create 4 additional flats, totaling 10.
Single Storey Rear Extension
Cardiff
Retention of a single storey rear extension and rear dormer roof extension with rooflight and new window.
Rear Extension
Cardiff
First-floor rear extension to create an additional studio.
Single Storey Rear Extension
Cardiff
Single-storey rear extension to the dwelling.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | Cardiff | £100k–£250k | Ground-floor rear extension and rear dormer loft conversion with change of use from Class C4 HMO to large Sui Generis HMO. | Approved |
| Loft Conversion | Cardiff | £100k–£250k | Ground floor rear/side extension combined with a rear dormer loft conversion. | Approved |
| Loft Conversion | 116 King's Road Pontcanna Cardiff CF11 9DG | £50k–£100k | Rear dormer roof extension and rear kitchen/side extension proposed (roof and rear extensions). | Approved |
| Loft Conversion | Cardiff | £50k–£100k | Retention of existing rear and side ground-floor extensions and proposed rear and side dormer extensions. | Pending |
| Loft Conversion | 1 And 3 Soberton Avenue And Land To The Rear Gabalfa Cardiff CF14 3NJ | £250k–£1m | Conversion and extension works to increase units (from 4 to 9 flats), loft dormer conversions, demolition of rear garages/storage and erection of 4 additional flats. | Pending |
Loft Conversion
Cardiff
Ground-floor rear extension and rear dormer loft conversion with change of use from Class C4 HMO to large Sui Generis HMO.
Loft Conversion
Cardiff
Ground floor rear/side extension combined with a rear dormer loft conversion.
Loft Conversion
116 King's Road Pontcanna Cardiff CF11 9DG
Rear dormer roof extension and rear kitchen/side extension proposed (roof and rear extensions).
Loft Conversion
Cardiff
Retention of existing rear and side ground-floor extensions and proposed rear and side dormer extensions.
Loft Conversion
1 And 3 Soberton Avenue And Land To The Rear Gabalfa Cardiff CF14 3NJ
Conversion and extension works to increase units (from 4 to 9 flats), loft dormer conversions, demolition of rear garages/storage and erection of 4 additional flats.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Heritage | Cardiff University Park Place Cathays Cardiff | Under £25k | Replacement of existing Audio Visual Equipment. | Approved |
| Heritage | Cardiff County Court Park Street Cathays Cardiff CF10 1ET | £25k–£50k | Replacement of existing doors to Judiciary and Staff Entrance. | Approved |
| Heritage | Central Market St Mary Street Cathays Cardiff CF10 1AU | £25k–£50k | Discharge of Condition 6 (roof repair specification and proposed details) relating to 23/01222/LBC. | Approved |
| Heritage | Cardiff University Park Place Cathays Cardiff | £100k–£250k | Internal strip-out and refurbishment plus external window restoration/replacement in Grade II* listed West Wing; new external condenser in internal courtyard. | Approved |
| Heritage | Central Market St Mary Street Cathays Cardiff CF10 1AU | £25k–£50k | Discharge of Condition 19 regarding salvage, reuse and replacement of roofing slates associated with LBC 23/01222/LBC. | Approved |
Heritage
Cardiff University Park Place Cathays Cardiff
Replacement of existing Audio Visual Equipment.
Heritage
Cardiff County Court Park Street Cathays Cardiff CF10 1ET
Replacement of existing doors to Judiciary and Staff Entrance.
Heritage
Central Market St Mary Street Cathays Cardiff CF10 1AU
Discharge of Condition 6 (roof repair specification and proposed details) relating to 23/01222/LBC.
Heritage
Cardiff University Park Place Cathays Cardiff
Internal strip-out and refurbishment plus external window restoration/replacement in Grade II* listed West Wing; new external condenser in internal courtyard.
Heritage
Central Market St Mary Street Cathays Cardiff CF10 1AU
Discharge of Condition 19 regarding salvage, reuse and replacement of roofing slates associated with LBC 23/01222/LBC.
Data sourced from Cardiff Council planning records and refreshed regularly.
Featured Projects
A snapshot of recent construction opportunities across Cardiff.
Removal of existing Audio Visual Equipment and Replacement with new Audio Visual Equipment
Under £25kCardiff University Park Place Cathays Cardiff
Replacement of existing Audio Visual Equipment.
Demolition of existing rear conservatory and construction of part two-storey/part single storey rear extension and associated alterations.
£100k–£250kCardiff
Demolition of existing conservatory and construction of part two-storey/part single storey rear extension.
Ground and first floor extensions to create 3 additional flats (9 in total).
£250k–£1mCardiff
Ground and first floor extensions to create 4 additional flats, totaling 10.
Replacement of existing doors to Judiciary and Staff Entrance
£25k–£50kCardiff County Court Park Street Cathays Cardiff CF10 1ET
Replacement of existing doors to Judiciary and Staff Entrance.
Examples of projects at an early stage before wider competition builds.
See All 71 Construction Leads in Cardiff
Unlock full details and connect with homeowners while projects are still taking shape.
Get Access NowPlanning Application Status in Cardiff
44%
Approved
56%
Pending
0%
Refused
In Cardiff, 44% of planning applications are approved, 56% are still pending, and 0% are refused. Pending applications can give builders an opportunity to make contact while projects are still at an early stage.
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 Cardiff
Among applications tracked by BuildAlert in Cardiff, 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 Cardiff
In Cardiff, 61% of planning applications are domestic and 39% are commercial. Both segments offer opportunities depending on the scale of work you take on.
Demand for Building Work in Cardiff
Plasdwr and Curran Embankment are set to bring sustained new-build activity to Cardiff for years to come, alongside the Channel View regeneration in Grangetown and the council's citywide neighbourhood strategy. Away from these schemes, Pontprennau and Llandaff's established housing stock supports a steady, more standard flow of extension and loft conversion work across the city.
How to Win Jobs in Cardiff
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
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Nearby Areas
Explore nearby construction leads in Vale of Glamorgan and Rhondda Cynon Taf.
Frequently Asked Questions
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