Solar and renewables in Three Rivers

Three Rivers received 25 renewable energy applications in the last 12 months, including 3 heat pumps. Of the 13 decided so far, 12 were approved. Most rooftop panels are permitted development, so the applications here are typically the larger or more sensitive schemes.

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Showing 13 of 13 applications
26/1140/PDNE 14 Jul 2026 Pending Consideration

Croxley Danes School 48 Baldwins Lane Croxley Green Rickmansworth Hertfordshire WD3 3LR

Prior Approval Renewable Energy: Installation of roof-mounted solar panels

Prior Approval - Renewable Energy Three Rivers 14 Jul 2026
26/1070/FUL 2 Jul 2026 Pending Consideration

Willow Cottage Loudwater Lane Loudwater Rickmansworth Hertfordshire WD3 4HX

Removal of existing roof and construction of new roof of increased height to create loft level accommodation, including dormer, rooflights, solar pane...

Three Rivers 2 Jul 2026
26/1006/CLPD 19 Jun 2026 Pending Consideration

47 Russell Road Moor Park Northwood Hertfordshire HA6 2LP

Certificate of Lawfulness Proposed Development: Installation of an air source heat pump to rear

Certificate of Lawfulness - Proposed Use Three Rivers 19 Jun 2026
26/0949/FUL 10 Jun 2026 Withdrawn

Rear Of Dickinson House 132-146 New Road Dickinson Square Croxley Green Rickmansworth Hertfordshire WD3 3ET

Demolition of existing building and construction of two storey attached dwelling with associated rooflights, solar panels, amenity space and parking

Full Application Three Rivers 10 Jun 2026
26/0889/FUL 1 Jun 2026 Awaiting decision

Clovelly Bell Lane Bedmond Abbots Langley Hertfordshire WD5 0QS

Demolition of existing conservatory and construction of single storey rear extension with pergola, rear patio, and sedum roof, solar panels and roofli...

Full Application Three Rivers 1 Jun 2026
26/0887/FUL 1 Jun 2026 Pending Consideration

114 Whitelands Avenue Chorleywood Rickmansworth Hertfordshire WD3 5RG

Erection of side dormer to first floor level with side solar panels and rooflights; alterations to ground floor level rear roof form from hip to gable...

Full Application Three Rivers 1 Jun 2026
26/0842/CLPD 26 May 2026 Approved

Dykewood Chorleywood Road Rickmansworth Hertfordshire WD3 4ES

Certificate of Lawfulness Proposed Development: Installation of solar panels.

Certificate of Lawfulness - Proposed Use Three Rivers 26 May 2026
26/0740/FUL 7 May 2026 Approved

44 Berry Lane Mill End Rickmansworth Hertfordshire WD3 4DD

Installation of air source heat pump

Full Application Three Rivers 7 May 2026
26/0702/PDNE 29 Apr 2026 Approved

Sports Hall Royal Masonic School Rickmansworth Park Rickmansworth Hertfordshire

Permitted Development Notice: Installation of solar panels

Prior Approval - Renewable Energy Three Rivers 29 Apr 2026
26/0681/FUL 27 Apr 2026 Approved

Oaklands Harthall Lane Kings Langley Hertfordshire WD4 8JN

Construction of single storey rear extension; front porch; rear patio extension, loft conversion including rear dormer window and front and side roofl...

Full Application Three Rivers 27 Apr 2026
26/0679/FUL 27 Apr 2026 Pending Consideration

The Weather House Lavrock Lane Croxley Hall Croxley Green Rickmansworth Hertfordshire WD3 3BE

Construction of part-single, part-two storey side extension, alterations to roof including front, side and rear dormers, side and rear solar panels an...

Full Application Three Rivers 27 Apr 2026
26/0673/FUL 24 Apr 2026 Pending Consideration

National Westminster Bank 159 - 161 High Street Rickmansworth Hertfordshire WD3 1BA

Extension and conversion of existing building to provide 2 commercial units (Use Class E) and erection of 7no. self-contained residential dwellings (U...

Full Application Three Rivers 24 Apr 2026
26/0653/FUL 23 Apr 2026 Approved

Ferndale Church Lane Sarratt Rickmansworth Hertfordshire WD3 6HN

Construction of single storey rear extension; first floor side extension; alterations to front roof form and gables to rear dormers; side rooflights a...

Full Application Three Rivers 23 Apr 2026
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Frequently asked questions

Do you need planning permission for solar panels on a house?
Most rooftop solar PV is permitted development if it doesn't project above the highest part of the roof or more than 200mm from the surface. Conservation areas, listed buildings and World Heritage Sites usually require full planning permission or Listed Building Consent.
Do you need planning permission for an air-source heat pump?
In most cases an outdoor heat pump unit smaller than 1.5m³ (raised in 2025 from 0.6m³) and at least 1m from the boundary qualifies as permitted development. Listed buildings and conservation areas may need full permission.
How big can a solar farm be without planning permission?
Ground-mounted commercial solar farms above 50kW effectively always require full planning permission. Smaller rooftop installations on industrial or agricultural buildings can sometimes use prior-approval rights under Part 14 of the GPDO.
Can I get email alerts for new solar & renewables applications in Three Rivers?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new solar & renewables application published by Three Rivers. You can also narrow the alert to a postcode, street, or drawn area.

We check Three Rivers's planning portal daily. New solar & renewables applications appear here within a day of being published.