Updated 22 October 2026 · 149 new leads in the last 30 days
Construction Leads in Sevenoaks
Access construction leads in Sevenoaks by tracking newly submitted planning applications. See which homeowners across the district are preparing extensions, loft conversions, and refurbishments, and get in touch before they begin shortlisting builders.
- New planning applications added frequently from Sevenoaks District Council
- Connect with homeowners at the early planning stage
- No shared enquiries or competitive bidding
Data sourced from Sevenoaks District Council planning records and refreshed regularly.
149
New Leads (30 Days)
£119,510
Average Project Value
38
High Value Projects
Over £100k
Extensions
Most Common Project
Construction Trends in Sevenoaks
Sevenoaks district is one of the most heavily Green Belt-constrained areas in Kent, with the large majority of the district falling within London's Metropolitan Green Belt. That restricts new-build development outside existing settlement boundaries fairly tightly, which pushes a much higher proportion of activity toward extending, remodelling, and refurbishing existing homes rather than building new ones. The town of Sevenoaks itself has a conservation area covering its historic core and High Street, close to Knole House and its deer park, where alterations to many buildings need planning permission rather than falling under permitted development. Otford and Shoreham, villages to the north, keep a similar conservation character around their historic centres. Westerham, to the west near Churchill's former home at Chartwell, has its own protected village character. Swanley, in the district's north-east corner, is a notable exception — a larger, more modern town outside the strictest Green Belt designations, where new-build activity and larger-scale residential schemes are more common than elsewhere in the district.
Project Type Breakdown
Here's a breakdown of the most common types of construction projects in Sevenoaks over the past 30 days.
In Sevenoaks, Extensions are the most common project type, appearing in 76 of the 149 leads tracked in the last 30 days, with Garden Rooms also showing consistent demand alongside Heritages. 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 Sevenoaks
The architects and planning consultants submitting the most construction-related applications in Sevenoaks, based on recent planning records.
- 1Robinson Escott Planning
- 2Offset Architects
- 3Peek Architecture Ltd
- 4Alpha Design Studio Limited
- 5Oast Architecture Ltd
- 6Macintosh Davies Ltd
- 7Haskins Design Ltd
- 8AK-Studios
- 9Harringtons 2006
- 10Land Use Consultants
Project Value Insights
Understanding typical project values in Sevenoaks 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 especially common in Sevenoaks town, Otford, and Westerham, where larger properties and more extensive upgrades are the norm.
Recent Planning Applications in Sevenoaks
Extensions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Single Storey Rear Extension | Wood Cottage Uckfield Lane Hever Kent TN8 7LR | £50k–£100k | Single-storey rear extension with roof lights and alterations to fenestration. | Approved |
| Double Storey Extension | Hale Farm Hale Oak Road Chiddingstone Kent TN8 7AX | £100k–£250k | Demolition of existing elements and erection of a single storey rear extension and two storey extension. | Withdrawn |
| Single Storey Front Extension | 1 Manse Way Swanley Kent BR8 8DD | £50k–£100k | Single-storey front extension and conversion of existing garage to a habitable room. | Approved |
| Single Storey Rear Extension | 9 Bower Road Hextable Kent BR8 7SF | £50k–£100k | Single-storey lower ground floor rear extension to enclose a recessed terrace to form a home study, plus installation of a safety guardrail adjacent to existing first-floor sliding doors. | Approved |
| Wrap-Around Extension | Sevenoaks | £50k–£100k | Demolition of original side wing and replacement with new single-storey side and rear extension with rooflights; repositioning of gate and fence. | Approved |
Single Storey Rear Extension
Wood Cottage Uckfield Lane Hever Kent TN8 7LR
Single-storey rear extension with roof lights and alterations to fenestration.
Double Storey Extension
Hale Farm Hale Oak Road Chiddingstone Kent TN8 7AX
Demolition of existing elements and erection of a single storey rear extension and two storey extension.
Single Storey Front Extension
1 Manse Way Swanley Kent BR8 8DD
Single-storey front extension and conversion of existing garage to a habitable room.
Single Storey Rear Extension
9 Bower Road Hextable Kent BR8 7SF
Single-storey lower ground floor rear extension to enclose a recessed terrace to form a home study, plus installation of a safety guardrail adjacent to existing first-floor sliding doors.
Wrap-Around Extension
Sevenoaks
Demolition of original side wing and replacement with new single-storey side and rear extension with rooflights; repositioning of gate and fence.
Loft Conversions
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| Loft Conversion | 32 Wildernesse Mount Sevenoaks Kent TN13 3QS | £100k–£250k | Demolition of existing conservatory and external steps, garage conversion with raised roof, first-floor extension with new dormers and raised eaves, chimney works, new entrance canopy, rooflight and fenestration alterations. | Approved |
| Loft Conversion | St Martins 17 Fairby Lane Hartley Kent DA3 8DA | £100k–£250k | Two-storey side extension and single-storey rear extension, enlargement of side dormer, rooflights, removal of chimney, canopy to front and associated internal alterations. | Refused |
| Loft Conversion | Sevenoaks | £250k–£1m | Demolish garden outbuildings and front porch; erect rear and side extensions, new porch, loft conversion with dormers and rear balcony, internal alterations, PV installation, new pool and garage alterations to provide gym and bin store. | Approved |
| Loft Conversion | Linnets Nightingale Lane Ide Hill Kent TN14 6JA | £100k–£250k | Single-storey infill extension, loft conversion with dormer/rooflights and internal alterations. | Approved |
| Loft Conversion | Chudleigh Castle Hill Hartley Kent DA3 7BQ | £50k–£100k | Demolish two rear garden outbuildings and provide a single-storey rear extension together with a loft conversion. | Approved |
Loft Conversion
32 Wildernesse Mount Sevenoaks Kent TN13 3QS
Demolition of existing conservatory and external steps, garage conversion with raised roof, first-floor extension with new dormers and raised eaves, chimney works, new entrance canopy, rooflight and fenestration alterations.
Loft Conversion
St Martins 17 Fairby Lane Hartley Kent DA3 8DA
Two-storey side extension and single-storey rear extension, enlargement of side dormer, rooflights, removal of chimney, canopy to front and associated internal alterations.
Loft Conversion
Sevenoaks
Demolish garden outbuildings and front porch; erect rear and side extensions, new porch, loft conversion with dormers and rear balcony, internal alterations, PV installation, new pool and garage alterations to provide gym and bin store.
Loft Conversion
Linnets Nightingale Lane Ide Hill Kent TN14 6JA
Single-storey infill extension, loft conversion with dormer/rooflights and internal alterations.
Loft Conversion
Chudleigh Castle Hill Hartley Kent DA3 7BQ
Demolish two rear garden outbuildings and provide a single-storey rear extension together with a loft conversion.
Other Projects
| Project Type | Area | Est. Value | Description | Status |
|---|---|---|---|---|
| New Build | Hawthorne Trust Charton Manor Gorse Hill Farningham Kent DA4 0JT | £50k–£100k | Proposed two storey side and single storey rear extension with additional window and porch roof. | Refused |
| Porch | Sevenoaks | £100k–£250k | Conversion of garage and various extensions to enlarge the dwelling, including roof alterations. | Withdrawn |
| Dropped Kerb | Rosede Old London Road Knockholt Kent TN14 7LU | £250k–£1m | Construction of a detached dwelling with subterranean basement, double garage, and associated landscaping. | Approved |
| Garden Room | The White House High Street Farningham Kent DA4 0DH | £50k–£100k | Alterations to outbuilding and installation of raised decking with spa pool. | Withdrawn |
| Garden Room | The White House High Street Farningham Kent DA4 0DH | £25k–£50k | Alterations to outbuilding and installation of raised decking with spa pool. | Withdrawn |
New Build
Hawthorne Trust Charton Manor Gorse Hill Farningham Kent DA4 0JT
Proposed two storey side and single storey rear extension with additional window and porch roof.
Porch
Sevenoaks
Conversion of garage and various extensions to enlarge the dwelling, including roof alterations.
Dropped Kerb
Rosede Old London Road Knockholt Kent TN14 7LU
Construction of a detached dwelling with subterranean basement, double garage, and associated landscaping.
Garden Room
The White House High Street Farningham Kent DA4 0DH
Alterations to outbuilding and installation of raised decking with spa pool.
Garden Room
The White House High Street Farningham Kent DA4 0DH
Alterations to outbuilding and installation of raised decking with spa pool.
Data sourced from Sevenoaks District Council planning records and refreshed regularly.
Featured Projects
A snapshot of recent construction opportunities across the Sevenoaks district.
Change of use from guest accommodation associated with Christian Science Nurses Training Centre to form two self-contained flats. Removal of existing hard landscaping including steps, shed, lift and covered structure. Alteration to fenestration. Erection of fencing and gate.
£50k–£100kHawthorne Trust Charton Manor Gorse Hill Farningham Kent DA4 0JT
Proposed two storey side and single storey rear extension with additional window and porch roof.
Conversion of existing garage, demolition of porch and bay window with the enlargement of existing dwelling house including front and rear additions with a new integrated garage. Chimney and roof alterations. New terrace and patio works. Solar panels. Alterations to fenestration.
£100k–£250kSevenoaks
Conversion of garage and various extensions to enlarge the dwelling, including roof alterations.
Erection of detached dwelling including subterranean basement, double garage/part port, and introduction of vehicular access and gate, associated car parking and hard and soft landscaping.
£250k–£1mRosede Old London Road Knockholt Kent TN14 7LU
Construction of a detached dwelling with subterranean basement, double garage, and associated landscaping.
Raised decking with recessed spa pool adjacent to existing/retained garage outbuilding. Alterations to outbuilding fenestration, including removal of existing window to form new single doorway. Associated hard landscaping, including concealed substructure work to support pool and decking framework.
£50k–£100kThe White House High Street Farningham Kent DA4 0DH
Alterations to outbuilding and installation of raised decking with spa pool.
Examples of projects at an early stage before wider competition builds.
See All 149 Construction Leads in Sevenoaks
Unlock full details and connect with homeowners while projects are still taking shape.
Get Access NowPlanning Application Status in Sevenoaks
39%
Approved
54%
Pending
7%
Refused
In Sevenoaks, 39% of planning applications are approved, 54% are still pending, and 7% are refused. Pending applications can give builders an opportunity to make contact while projects are still at an early stage.
Earlier contact usually means less competition.
Based on planning applications submitted over the last 30 days.
Planning Approval Times in Sevenoaks
Among applications tracked by BuildAlert in Sevenoaks, 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 Sevenoaks
In Sevenoaks, 76% of planning applications are domestic and 24% are commercial. Both segments offer opportunities depending on the scale of work you take on.
Demand for Building Work in Sevenoaks
Sevenoaks is one of the most affluent districts in Kent, driven by fast rail links into London and a strong stock of large detached and period houses. That affluence, combined with tight Green Belt restrictions on new development, means homeowners here are more likely to invest heavily in extending and upgrading their existing property than to move, producing consistently higher-value renovation and extension projects than many neighbouring districts. Otford, Westerham, and the villages around the town of Sevenoaks see particularly high-spec work reflecting larger plots and established household budgets. Swanley, by contrast, offers a more accessible market with a higher share of new-build and first-time renovation projects, giving builders working across the district exposure to both ends of the market.
How to Win Jobs in Sevenoaks
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 Sevenoaks.
Track Planning Applications
We monitor Sevenoaks District Council and surrounding authorities daily for new residential projects.
Filter by Location & Type
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Contact Homeowners
Get contact details and send letters or emails directly to homeowners before your competitors.
Nearby Areas
Builders based in Sevenoaks often take on work in nearby Kent areas such as Dartford, Gravesham, and Tonbridge and Malling, helping maintain a consistent flow of projects.
Frequently Asked Questions
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