Csi Building Services Ltd
Window & double glazing company registered in Rotherham, South Yorkshire
Registered address
9 HIGHFIELD PARK, MALTBY, Rotherham S66 7DR
✓ Active on Companies House
Companies House number12770976
IncorporatedJuly 2020
6 years on the register
6 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 July 2025 · next due April 2027
Also registered for43220 - Plumbing, heat and air-conditioning installation; 43290 - Other construction installation
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 Csi Building Services 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.
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Is Csi Building Services Ltd FENSA or Certass registered?
This directory does not confirm registration. Window and door installers self-certify their work against Building Regulations through a Competent Person Scheme — mainly FENSA or Certass — so check the company name or postcode (S66 7DR) directly on the FENSA or Certass website before booking, and ask to see the certificate number.
How much does window replacement cost in Rotherham?
A single uPVC window in Rotherham 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.
Can I see reviews for Csi Building Services Ltd?
Not here. This is a register-based directory, not a review site. Look at independent review platforms, ask the installer for recent local references, and confirm FENSA or Certass registration before any work starts.
Is new double glazing covered by a warranty?
uPVC frames typically carry a 10 year manufacturer or insurance-backed guarantee, and sealed glazed units are usually guaranteed separately for 5 to 10 years against misting. Register the guarantee after installation and keep the FENSA or Certass certificate — a buyer's solicitor will ask for it if you sell the property.
How many window and glazing companies are there in South Yorkshire?
This directory holds 801 active window and glazing businesses across 39 towns in South Yorkshire, all from the Companies House register. Rotherham accounts for 97, among the county's busiest. About 39% of South Yorkshire's registered window and glazing firms were incorporated in the last three years, so weigh incorporation date and FENSA/Certass registration, not just company age.