- Companies
- Joiners and carpenters
- Sienzo Construction Ltd
Sienzo Construction Ltd
- Company number
- SC559222
- Incorporated
- 2 Mar 20179 years trading
- Registered office
- 35 Crow Wood Road, Chryston, G69 9BU
- Nature of business
- Joinery installation
Sienzo Construction Ltd is a 9-year-old private limited company registered in Chryston, company number SC559222, one of the UK's joinery companies. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 down £31K (-14.6%) on the year before, to £179K.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £187K against £338 owed within a year: more than 10 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 9 years, 2018 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £179K | £187K | £338 | 3 | |
| 31 Mar 2025 | £210K | £231K | £825 | 3 | |
| 31 Mar 2024 | £221K | £235K | £632 | 4 | |
| 31 Mar 2023 | £225K | £230K | £2,170 | 2 | |
| 31 Mar 2022 | £186K | £177K | £1,653 | 0 | |
| 31 Mar 2021 | £88K | £79K | £12K | 0 | |
| 31 Mar 2020 | £74K | £61K | £13K | 2 | |
| 31 Mar 2019 | £72K | £65K | £8,125 | ||
| 31 Mar 2018 | £41K | £15K | £6,677 |
Where Sienzo Construction Ltd is registered
The registered office is in Chryston (G69), in the North Lanarkshire local authority area, Scotland. Show G69 9BU on a map.
Other trade companies in G69
- Construct Services LtdScaffolders
- Cmcjoinery LtdBuilders
- V.J.A.K.K Access LtdScaffolders
- Nu City Energy LimitedCivil engineering
- Jto Hospitality LtdFacilities management
- Brady Builders LtdBuilders
- Maxpc LimitedCivil engineering
- Sap Scotland LtdCivil engineering
What happens if Sienzo 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC559222
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 March 2017 (9 years ago)
- Registered office
- 35 Crow Wood Road, Chryston, G69 9BU
- Nature of business
- Joinery installation (SIC 43320)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 30 January 2026
Filing notes for joinery companies
Joinery companies can carry stock and work in progress at the year end, especially bespoke workshop work, and that figure moves the profit for the year.
Similar companies
Other active joinery companies.
Frequently asked questions
When are Sienzo Construction Ltd's accounts due?
Sienzo Construction Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Sienzo Construction Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Sienzo Construction Ltd still trading?
Sienzo 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 Sienzo Construction Ltd do?
Sienzo Construction Ltd is registered under Joinery installation (SIC 43320).
How old is Sienzo Construction Ltd?
Sienzo Construction Ltd was incorporated on 2 March 2017, 9 years ago.
What is the penalty if Sienzo 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 Sienzo 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.