- Companies
- Builders
- Southend-on-Sea
- Onaci Ltd
Onaci Ltd
- Company number
- 10866398
- Incorporated
- 14 Jul 20179 years trading
- Registered office
- 40 Tunbridge Road, Southend-on-Sea, SS2 6LT
- Nature of business
- Construction of domestic buildings; Electrical installation; Floor and wall covering; Roofing activities
Onaci Ltd is a 9-year-old private limited company registered in Southend-on-Sea, company number 10866398, one of 86 building contractors in Southend-on-Sea. Its next accounts are due at Companies House on 29 April 2027, and the CT600 for the period to 29 July 2026 is due at HMRC on 29 July 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 unchanged on the year before, at £62K.
- Net assets rose in 1 of 7 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 29 Jul 2025 | £62K | £62K | 0 | ||
| 29 Jul 2024 | £62K | £62K | 0 | ||
| 31 Jul 2023 | £62K | £12 | £62K | 0 | |
| 31 Jul 2022 | £62K | £225 | £62K | £0 | 0 |
| 31 Jul 2021 | £63K | £453 | £90K | £27K | 0 |
| 31 Jul 2020 | £64K | £64K | 1 | ||
| 31 Jul 2019 | £70K | £736 | £143K | £73K | 0 |
| 31 Jul 2018 | £12K | £44K | £29K |
Where Onaci Ltd is registered
The registered office is in Southend-on-Sea (SS2), in the Southend-on-Sea local authority area, East of England. Show SS2 6LT on a map.
Other trade companies in SS2
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- Joycarparts LtdMotor traders
- Waterfield Construction LtdBuilders
- Eddie's Vehicle Detailing LtdMechanics and garages
- Attac Projects An Trade Management LtdInstallers
- Southend Renovations LtdBuilders
- Boiro Projects LtdSpecialist contractors
Also registered at this address
1 other company uses the same registered office as Onaci Ltd.
- Malio. LtdBuilders
What happens if Onaci 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 29 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Apr 2027 to 29 May 2027 | £150 |
| 1 to 3 months late | 30 May 2027 to 29 Jul 2027 | £375 |
| 3 to 6 months late | 30 Jul 2027 to 29 Oct 2027 | £750 |
| More than 6 months late | From 30 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Jul 2027 | £200 |
| 3 months late | 29 Oct 2027 | another £200 |
| 6 months late | 29 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Jul 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
- 10866398
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2017 (9 years ago)
- Registered office
- 40 Tunbridge Road, Southend-on-Sea, SS2 6LT
- Nature of business
- Construction of domestic buildings (SIC 41202)
Electrical installation (SIC 43210)
Floor and wall covering (SIC 43330)
Roofing activities (SIC 43910) - Year end
- 29 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 29 July 2025
- Last confirmation statement
- 13 July 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 Southend-on-Sea
Other active building contractors registered in Southend-on-Sea.
- P E Construction Limited2014
- Pro Rental Maintenance Ltd2024
- QSR5 Ltd2010
- Quantrex Construction Ltd2026
- R J M Developers Limited2021
- Reform Property Services Ltd2026
- RJ2 Property Limited2025
- Ryran Ltd2024
All building contractors in Southend-on-Sea · All trades in Southend-on-Sea · Builders across the UK
Frequently asked questions
When are Onaci Ltd's accounts due?
Onaci Ltd's next accounts are due at Companies House by 29 April 2027 (in 199 days), covering the period to 29 July 2026.
When is Onaci Ltd's CT600 due?
The CT600 for the period to 29 July 2026 is due at HMRC by 29 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 April 2027.
Is Onaci Ltd still trading?
Onaci 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 Onaci Ltd do?
Onaci Ltd is registered under Construction of domestic buildings (SIC 41202); Electrical installation (SIC 43210); Floor and wall covering (SIC 43330); Roofing activities (SIC 43910).
How old is Onaci Ltd?
Onaci Ltd was incorporated on 14 July 2017, 9 years ago.
What is the penalty if Onaci 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 Onaci 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.