C S Mills Joiners & Builders Ltd
Window & double glazing company registered in Bishop Auckland, County Durham
Registered address
3 WESTERTON, Bishop Auckland DL14 8AH
✓ Active on Companies House
Companies House number10601028
IncorporatedFebruary 2017
9 years on the register
9 years on the register
Company typePrivate Limited Company
Trade (SIC 43320)Joinery installation (windows, doors & frames)
Accounts on fileMicro-entity accounts (smallest filing band) · last filed February 2026 · next due November 2027
Listed from the public Companies House register, not an endorsement. Quote requests go to FENSA or Certass registered installers covering your postcode, not necessarily this company. Accounts filing category reflects company size under Companies House rules, not service quality. Map location is approximate, based on the registered postcode.
Before you book C S Mills Joiners & Builders Ltd
This page confirms the company is on the Companies House register. It does not confirm FENSA or Certass registration, insurance, or trading status. Check those yourself first.
How to vet a window installer before you hire →Need a window installer in Bishop Auckland?
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Get Free Quotes →Window help for Bishop Auckland
How much does window replacement cost in Bishop Auckland?
A single uPVC window in Bishop Auckland typically runs £300 to £600 supplied and fitted; a full house of 8 to 10 windows is often £3,000 to £8,000 depending on style (casement, bay, sash-look) and glazing spec. Get two or three written, itemised quotes before agreeing to work.
How do I get a quote from a window installer in Bishop Auckland?
Use the "Get Free Quotes" form on this page. Your job details go to FENSA or Certass registered installers covering the DL postcode area, who contact you directly. Bishop Auckland has 28 registered window and glazing businesses in this directory, though the installers who quote are not necessarily among them. It is free and there is no obligation.
What does this page tell me about C S Mills Joiners & Builders Ltd?
The registered company name, registered office address, Companies House number and incorporation date, all taken from the public Companies House register. It does not include reviews, prices, staff details, or confirmation that the company is currently trading.
Should I repair or replace my windows?
Repair makes sense for a failed seal (misted double glazing), a worn handle or hinge, or a damaged lock on an otherwise sound frame — usually a straightforward swap. Replacement is the better value once frames are warped, draughty, rotten (on timber) or past roughly 20 to 25 years old, or when several units across the house have failed. Ask the installer to price both where it's borderline.
Does a listing here mean C S Mills Joiners & Builders Ltd is recommended?
No. Companies appear in this directory because they are on the Companies House register under a window/joinery installation trade code. A listing is not vetting, endorsement, or a guarantee that the company is trading or FENSA/Certass registered.