- Companies
- Builders
- Carshalton
- Az Plumbing & Heating Specialist Ltd.
Az Plumbing & Heating Specialist Ltd.
- Company number
- 09378642
- Incorporated
- 8 Jan 201511 years trading
- Registered office
- 301 Green Wrythe Lane, Carshalton, SM5 1TR
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Repair of personal and household goods n.e.c.
Az Plumbing & Heating Specialist Ltd. is a 11-year-old private limited company registered in Carshalton, company number 09378642, one of 104 building contractors in Carshalton. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £13K on the year before, to £13K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £56K against £14K owed within a year: 4.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £13K | £11K | £56K | £14K | 2 |
| 31 Jan 2024 | £204 | £13K | £13K | 2 | |
| 31 Jan 2023 | £2,525 | £12K | £8,413 | 2 | |
| 31 Jan 2022 | £10K | £20K | £7,276 | 2 | |
| 31 Jan 2021 | £7,627 | £32K | £6,958 | 2 | |
| 31 Jan 2020 | £5,634 | £14K | £12K | 2 | |
| 31 Jan 2019 | £1,446 | £5,238 | £7,392 | ||
| 31 Jan 2018 | £3,250 | £2,681 | £3,931 | ||
| 31 Jan 2017 | £4,677 | £2,331 | £4,507 | £4,330 | |
| 31 Jan 2016 | £409 | £409 | £2,585 |
Where Az Plumbing & Heating Specialist Ltd. is registered
The registered office is in Carshalton (SM5), in the Sutton local authority area, London. Show SM5 1TR on a map.
Other trade companies in SM5
- Rich Detailz LtdMechanics and garages
- Sutton Motor and Garage LtdMechanics and garages
- Ecobuild Plumbing & Heating LtdPlumbers and heating engineers
- Aaircon Services LtdPlumbers and heating engineers
- Perthy Properties (Greenhills) LimitedProperty developers
- Jophp LimitedCleaning companies
- Pro-Type Roofing LtdRoofers
- Mic Cleaning LimitedCleaning companies
Also registered at this address
1 other company uses the same registered office as Az Plumbing & Heating Specialist Ltd..
- Az Construction & Renovation LtdBuilders
What happens if Az Plumbing & Heating Specialist Ltd. files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 09378642
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 January 2015 (11 years ago)
- Registered office
- 301 Green Wrythe Lane, Carshalton, SM5 1TR
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Repair of personal and household goods n.e.c. (SIC 95290) - Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 16 March 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Carshalton
Other active building contractors registered in Carshalton.
- B.M. Building Service Contractors Ltd2026
- Babii Ihor Building Services Ltd2025
- Build & Renovate BM Ltd2024
- Buildwise Solutions Limited2023
- Burac Ltd2022
- Catalinvoinea Limited2017
- CCB Interiors Limited2024
- Cruz Construct Ltd2019
All building contractors in Carshalton · All trades in Carshalton · Builders across the UK
Frequently asked questions
When are Az Plumbing & Heating Specialist Ltd.'s accounts due?
Az Plumbing & Heating Specialist Ltd.'s next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Az Plumbing & Heating Specialist Ltd.'s CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Az Plumbing & Heating Specialist Ltd. still trading?
Az Plumbing & Heating Specialist Ltd. is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Az Plumbing & Heating Specialist Ltd. do?
Az Plumbing & Heating Specialist Ltd. is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Repair of personal and household goods n.e.c. (SIC 95290).
How old is Az Plumbing & Heating Specialist Ltd.?
Az Plumbing & Heating Specialist Ltd. was incorporated on 8 January 2015, 11 years ago.
What is the penalty if Az Plumbing & Heating Specialist Ltd. files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Az Plumbing & Heating Specialist Ltd. on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.