- Company number
- 16490600
- Incorporated
- 2 Jun 20251 year trading
- Registered office
- 62 Thorpe Road, London, E17 4LA
- Nature of business
- Construction of domestic buildings
Olsi Construction Ltd is a 1-year-old private limited company registered in London, company number 16490600, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 2 March 2027, and its first CT600 is due at HMRC on 1 June 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
File the first accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Olsi Construction LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Where Olsi Construction Ltd is registered
The registered office is in London (E17), in the Waltham Forest local authority area, London. Show E17 4LA on a map.
Other trade companies in E17
- MGB Auto Trading LtdMotor traders
- Spotless Behaviour LtdCleaning companies
- Addison & Vale Construction LtdBuilders
- Karina Business LtdInstallers
- Hazzi Automotive LtdMechanics and garages
- Zlatev Construction Service LimitedFinishing trades
- Zzzguard LtdBuilders
- Ok Estates & Developments LtdBuilders
What happens if Olsi 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 2 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 3 Mar 2027 to 2 Apr 2027 | £150 |
| 1 to 3 months late | 3 Apr 2027 to 2 Jun 2027 | £375 |
| 3 to 6 months late | 3 Jun 2027 to 2 Sep 2027 | £750 |
| More than 6 months late | From 3 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 16490600
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 June 2025 (1 year ago)
- Registered office
- 62 Thorpe Road, London, E17 4LA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 1 June 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 London
Other active building contractors registered in London.
- Oluchukwu Group Limited2026
- Oly Construct Limited2018
- Olymp Facade Limited2024
- Olymp Limited2022
- Olympus Property Group Limited2010
- Om & Sky Limited2015
- Omar Contractors Ltd2025
- Omd Electrical Services Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Olsi Construction Ltd's accounts due?
Olsi Construction Ltd's next accounts are due at Companies House by 2 March 2027 (in 141 days), covering the period to 30 June 2026.
When is Olsi Construction Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 1 June 2026, due by 1 June 2027, and one for the period to 30 June 2026, due by 30 June 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Olsi Construction Ltd still trading?
Olsi 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 Olsi Construction Ltd do?
Olsi Construction Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Olsi Construction Ltd?
Olsi Construction Ltd was incorporated on 2 June 2025, 1 year ago.
What is the penalty if Olsi 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 Olsi 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.