- Companies
- Finishing trades
- Eastleigh
- Csy Construction Limited
Csy Construction Limited
- Company number
- 09018198
- Incorporated
- 30 Apr 201412 years trading
- Registered office
- Eastleigh House, Upper Market Street, Eastleigh, Hampshire, SO50 9YN
- Nature of business
- Other building completion and finishing
Csy Construction Limited is a 12-year-old private limited company registered in Eastleigh, company number 09018198, one of 73 building finishing companies in Eastleigh. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £135K (+68.5%) on the year before, to £333K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £249K against £42K owed within a year: 6.0 times cover.
- 3 employees on average, down from 4 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Apr 2025 | £333K | £249K | £42K | 3 | |
| 30 Apr 2024 | £197K | £372K | £170K | 4 | |
| 30 Apr 2023 | £138K | £193K | £42K | 3 | |
| 30 Apr 2022 | £78K | £193K | £82K | 3 | |
| 30 Apr 2021 | £28K | £41K | £78K | 4 | |
| 30 Apr 2020 | £47K | £84K | £40K | 4 | |
| 30 Apr 2019 | £32K | £85K | £55K | ||
| 29 Apr 2018 | £57K | £42K | £100K | ||
| 29 Apr 2017 | £100 | £42K | £42K | ||
| 30 Apr 2016 | £100 | £20K | £59K | £59K |
Where Csy Construction Limited is registered
The registered office is in Eastleigh (SO50), in the Eastleigh local authority area, South East. Show SO50 9YN on a map.
Other trade companies in SO50
- Chevron Homes LimitedBuilders
- Plymouth Construction & Roofing LtdRoofers
- Marley Roofing and Guttering LtdRoofers
- Gutter and Glass LimitedCleaning companies
- Zap Clean Systems LimitedCleaning companies
- Pro Spray Hampshire LtdPainters and decorators
- National Trusted Vehicles LtdMotor traders
- Kuji Service LtdMachinery repair and installation
Also registered at this address
3 other companies use the same registered office as Csy Construction Limited.
- Carglass Windscreens LimitedMechanics and garages
- M L Window Cleaning LimitedCleaning companies
- Tso Construction LimitedBuilders
What happens if Csy Construction Limited 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 09018198
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 April 2014 (12 years ago)
- Registered office
- Eastleigh House, Upper Market Street, Eastleigh, Hampshire, SO50 9YN
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 30 September 2025
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Eastleigh
Other active building finishing companies registered in Eastleigh.
- Cura Projects Limited2026
- D Rice Installations Limited2016
- Definitions Property Care Limited2014
- DVKC Ltd2019
- Elite Entrance Systems Limited2008
- Fall Works Ltd2013
- GDB Roofing Ltd2019
- Gecko Renewable Energy Ltd2023
All building finishing companies in Eastleigh · All trades in Eastleigh · Finishing trades across the UK
Frequently asked questions
When are Csy Construction Limited's accounts due?
Csy Construction Limited's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Csy Construction Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Csy Construction Limited still trading?
Csy Construction Limited 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 Csy Construction Limited do?
Csy Construction Limited is registered under Other building completion and finishing (SIC 43390).
How old is Csy Construction Limited?
Csy Construction Limited was incorporated on 30 April 2014, 12 years ago.
What is the penalty if Csy Construction 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 Csy Construction Limited 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.