Company profile · Builders
O'Flaherty Construction Limited
O'Flaherty Construction Limited is a newly incorporated private limited company registered in London, company number 17138701, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 7 January 2028, and its first CT600 is due at HMRC on 6 April 2028.
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.
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Where O'Flaherty Construction Limited is registered
The registered office is in London (NW9), in the Brent local authority area, London. Show NW9 8NE on a map.
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What happens if O'Flaherty 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 7 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Jan 2028 to 7 Feb 2028 | £150 |
| 1 to 3 months late | 8 Feb 2028 to 7 Apr 2028 | £375 |
| 3 to 6 months late | 8 Apr 2028 to 7 Jul 2028 | £750 |
| More than 6 months late | From 8 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2029 | 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
- 17138701
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 April 2026
- Registered office
- 183 Salmon Street, London, NW9 8NE
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
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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- O'Mahony Carpentry Ltd2016
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- O.L. Dryliner-Finisher Ltd2014
- O2 Construction Ltd2024
- Oa Construction Group Ltd2026
- Oak and Marble Ltd2025
- Oak and Stone Property Solutions Ltd2026
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Frequently asked questions
When are O'Flaherty Construction Limited's accounts due?
O'Flaherty Construction Limited's next accounts are due at Companies House by 7 January 2028 (in 452 days), covering the period to 30 April 2027.
When is O'Flaherty Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 6 April 2027, due by 6 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is O'Flaherty Construction Limited still trading?
O'Flaherty 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 O'Flaherty Construction Limited do?
O'Flaherty Construction Limited is registered under Construction of commercial buildings (SIC 41201).
How old is O'Flaherty Construction Limited?
O'Flaherty Construction Limited was incorporated on 7 April 2026, less than a year ago.
What is the penalty if O'Flaherty 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 O'Flaherty Construction Limited on Companies House for filed documents, officers and the full history.
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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.