Plumb-line Contracting Limited
About
Plumb-line Contracting Limited is listed on the MCS register for solar PV and heat pumps, working out of Northampton. The company has been registered at Companies House since 2001, so it has been trading for 25 years. They cover 7 postcode districts, including NN1, NN2, NN3, NN4. This profile was compiled from public records. Book a survey to confirm what suits your roof.
Certified by MCS for
Taken from the MCS Certified register, certified by NICEIC (certificate NIC-2028).
Solar in this area
What solar could generate in this area.
We looked at the metered output of 14,879 real UK solar installations to see how much a roof could make. In the area this installer covers, we estimate the following:
≈1,021 kWh per kWp a year
For NN3 that is roughly 5% above the UK average: a 4 kWp system, about ten panels, would make roughly 4,100 kWh a year on a well-placed roof.
Check your roof's potential today with our roof check. This is an estimate: the size and suitability of your roof, the way it faces and other factors all play into what you could generate, so an in-person roof survey is always recommended.
Modelled from PVGIS irradiation data; metered output from Sheffield Solar's uk_pv dataset. How we measure.
Company details
- Company number
- 04201243
- Incorporated
- 18 April 2001
- Status
- Active
From the Companies House register.
Service areas
We've listed Plumb-line Contracting Limited across 7 postcode districts around their Northampton base, covering NN1, NN2, NN3, NN4, NN5, NN6 and NN7.
Map showing the 7 postcode districts Plumb-line Contracting Limited covers.
Are you the owner? If Plumb-line Contracting Limited only works in certain areas, claim this listing to set your real coverage.
Solarable lists installers and checks MCS certificates. We don't audit individual installations, so book a roof survey to confirm what's right for your home.
Step 1 of 2
Want installers to get in touch?
Leave your details today and up to three MCS-certified installers covering your postcode will call to arrange a survey and quote. Free, no obligation, and you choose who to go with.
Asking first Plumb-line Contracting Limited
Other listed installers
Other installers covering NN3.
Every installer here is MCS-certified and checked before we list them. We don't rank or endorse, featured listings are clearly labelled, and you can ask for up to three quotes from your Solarable Report.

Is your roof right for solar?
Enter your postcode and we'll estimate your roof's direction, its solar potential, and show certified installers covering your area.
- Every installer is certified



