- Companies
- Plumbers and heating engineers
- Hounslow
- O'Sullivan Building Performance Limited
O'Sullivan Building Performance Limited
- Company number
- 17069119
- Incorporated
- 4 Mar 2026
- Registered office
- 115 West Way, Hounslow, TW5 0JE
- Nature of business
- Plumbing, heat and air-conditioning installation; Other building completion and finishing; Combined facilities support activities
O'Sullivan Building Performance Limited is a newly incorporated private limited company registered in Hounslow, company number 17069119, one of 58 plumbing and heating companies in Hounslow. Its next accounts are due at Companies House on 4 December 2027, and its first CT600 is due at HMRC on 3 March 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.
Is this your company?
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Where O'Sullivan Building Performance Limited is registered
The registered office is in Hounslow (TW5), in the Hounslow local authority area, London. Show TW5 0JE on a map.
Other trade companies in TW5
- RSM Builderz LtdCleaning companies
- BSSB Construction LtdProperty developers
- Caliber Home Improvements LtdBuilders
- Gurbir Construction LtdBuilders
- Mangveer LtdBuilders
- Hadi & Eesa Enterprises LtdMotor traders
- Basarab Brickwork LtdBuilders
- Dave Cleaning Services LtdCleaning companies
What happens if O'Sullivan Building Performance 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 4 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Dec 2027 to 4 Jan 2028 | £150 |
| 1 to 3 months late | 5 Jan 2028 to 4 Mar 2028 | £375 |
| 3 to 6 months late | 5 Mar 2028 to 4 Jun 2028 | £750 |
| More than 6 months late | From 5 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 17069119
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 March 2026
- Registered office
- 115 West Way, Hounslow, TW5 0JE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other building completion and finishing (SIC 43390)
Combined facilities support activities (SIC 81100) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Hounslow
Other active plumbing and heating companies registered in Hounslow.
- Osman Plumbing & Heating Services Ltd2014
- Oxl Limited2025
- Plumbfix Buildwise Ltd2025
- Plumbpart Limited1997
- Plush Mansions Ltd2016
- Raf Plumbing & Heating Ltd2020
- Refurbs and Renovations Ltd2016
- Registered Gas Services Ltd2008
All plumbing and heating companies in Hounslow · All trades in Hounslow · Plumbers and heating engineers across the UK
Frequently asked questions
When are O'Sullivan Building Performance Limited's accounts due?
O'Sullivan Building Performance Limited's next accounts are due at Companies House by 4 December 2027 (in 418 days), covering the period to 31 March 2027.
When is O'Sullivan Building Performance 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 3 March 2027, due by 3 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is O'Sullivan Building Performance Limited still trading?
O'Sullivan Building Performance 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'Sullivan Building Performance Limited do?
O'Sullivan Building Performance Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other building completion and finishing (SIC 43390); Combined facilities support activities (SIC 81100).
How old is O'Sullivan Building Performance Limited?
O'Sullivan Building Performance Limited was incorporated on 4 March 2026, less than a year ago.
What is the penalty if O'Sullivan Building Performance 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'Sullivan Building Performance 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.