- Company number
- 13020654
- Incorporated
- 15 Nov 20205 years trading
- Registered office
- C/O Silverstone & Co 223 New London House, 6 London Street, London, EC3R 7AD
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other specialised construction activities n.e.c.; specialised design activities
Arz Design & Construction Ltd is a 5-year-old private limited company registered in London, company number 13020654, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 £1,796 (+23.8%) on the year before, to -£5,738.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £19K against £28K owed within a year: 0.7 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | -£5,738 | £19K | £28K | 2 | |
| 30 Nov 2024 | -£7,534 | £8,549 | £20K | 2 | |
| 30 Nov 2023 | £1,885 | £14K | £16K | 2 | |
| 30 Nov 2022 | £14K | £29K | £16K | 2 | |
| 30 Nov 2021 | £3,096 | £6,008 | £4,433 | 1 |
Where Arz Design & Construction Ltd is registered
The registered office is in London (EC3R), in the City of London local authority area, London. Show EC3R 7AD on a map.
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Also registered at this address
4 other companies use the same registered office as Arz Design & Construction Ltd.
- Arz Consultancy LtdBuilders
- LLM Services LimitedCleaning companies
- NG Maintenance Services LtdPlumbers and heating engineers
- Nu-Me Maintenance Services LtdPlasterers
What happens if Arz Design & Construction 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 13020654
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 November 2020 (5 years ago)
- Registered office
- C/O Silverstone & Co 223 New London House, 6 London Street, London, EC3R 7AD
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other specialised construction activities n.e.c. (SIC 43999)
specialised design activities (SIC 74100) - Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 23 December 2025
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.
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Other active building contractors registered in London.
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- As Elite Estates Ltd2024
- As Roofing & Construction Ltd2024
- As-Builder London Limited2014
- Asa Joinery Ltd2023
- Asaan Ltd2017
- Asabi Group International UK Limited2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Arz Design & Construction Ltd's accounts due?
Arz Design & Construction Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Arz Design & Construction Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Arz Design & Construction Ltd still trading?
Arz Design & Construction 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 Arz Design & Construction Ltd do?
Arz Design & Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other specialised construction activities n.e.c. (SIC 43999); specialised design activities (SIC 74100).
How old is Arz Design & Construction Ltd?
Arz Design & Construction Ltd was incorporated on 15 November 2020, 5 years ago.
What is the penalty if Arz Design & Construction 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 Arz Design & Construction 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.