- Companies
- Installers
- Mitcham
- Claz Building Limited
Claz Building Limited
- Company number
- 12009145
- Incorporated
- 21 May 20197 years trading
- Registered office
- 1 Imperial Gardens, Mitcham, CR4 1ER
- Nature of business
- Other construction installation
Claz Building Limited is a 7-year-old private limited company registered in Mitcham, company number 12009145, one of 37 installation companies (insulation, lifts, shutters and similar) in Mitcham. Companies House shows its accounts as overdue: they were due on 28 February 2023.
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 down £61K (-439.7%) on the year before, to -£75K.
- Current assets of £700 against £25K owed within a year: 0.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 2 years, 2020 to 2021.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2021 | -£75K | £700 | £700 | £25K | 2 |
| 31 May 2020 | -£14K | £60K | £94K | £58K | 2 |
Where Claz Building Limited is registered
The registered office is in Mitcham (CR4), in the Merton local authority area, London. Show CR4 1ER on a map.
Other trade companies in CR4
- Mendevo LimitedFloor and wall tilers
- Az Auto Body Repair LtdMechanics and garages
- Welcome Maintenance LimitedPainters and decorators
- Fixmot LtdMechanics and garages
- MPB Property Care LtdFinishing trades
- Aoo Building Services LtdBuilders
- LDN Plumbing Heating and Cooling LimitedPlumbers and heating engineers
- Dgha Construction LtdBuilders
What happens if Claz Building Limited files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2023 to 31 Mar 2023 | £150 |
| 1 to 3 months late | 1 Apr 2023 to 31 May 2023 | £375 |
| 3 to 6 months late | 1 Jun 2023 to 31 Aug 2023 | £750 |
| More than 6 months late | From 1 Sep 2023 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2023 | £200 |
| 3 months late | 31 Aug 2023 | another £200 |
| 6 months late | 30 Nov 2023 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2024 | 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
- 12009145
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 May 2019 (7 years ago)
- Registered office
- 1 Imperial Gardens, Mitcham, CR4 1ER
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2021
- Last confirmation statement
- 20 May 2021
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Mitcham
Other active installation companies (insulation, lifts, shutters and similar) registered in Mitcham.
- Coonan Concrete Pumping Limited2001
- Eaman Building Services Limited2019
- G&P Facades Limited2025
- Grand Finish Ltd2012
- Green Link Energy Services Ltd2021
- Igt Lift Ltd2017
- Interior Tec Limited2012
- Johny B Ltd2021
All installation companies (insulation, lifts, shutters and similar) in Mitcham · All trades in Mitcham · Installers across the UK
Frequently asked questions
When are Claz Building Limited's accounts due?
Claz Building Limited's accounts were due at Companies House on 28 February 2023 and the register shows them as overdue.
When is Claz Building Limited's CT600 due?
The CT600 for the period to 31 May 2022 is due at HMRC by 31 May 2023, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2023.
Is Claz Building Limited still trading?
Claz Building Limited is listed as active on the Companies House register (checked 12 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 Claz Building Limited do?
Claz Building Limited is registered under Other construction installation (SIC 43290).
How old is Claz Building Limited?
Claz Building Limited was incorporated on 21 May 2019, 7 years ago.
What is the penalty if Claz Building Limited 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 Claz Building Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.