- Company number
- 17022199
- Incorporated
- 9 Feb 2026
- Registered office
- 33A Sunderland Road, London, SE23 2PS
- Nature of business
- Construction of domestic buildings; Joinery installation; Other building completion and finishing; Other specialised construction activities n.e.c.
Extendo Construct Ltd is a newly incorporated private limited company registered in London, company number 17022199, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 9 November 2027, and its first CT600 is due at HMRC on 8 February 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 Extendo Construct Ltd is registered
The registered office is in London (SE23), in the Lewisham local authority area, London. Show SE23 2PS on a map.
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What happens if Extendo Construct 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 9 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 10 Nov 2027 to 9 Dec 2027 | £150 |
| 1 to 3 months late | 10 Dec 2027 to 9 Feb 2028 | £375 |
| 3 to 6 months late | 10 Feb 2028 to 9 May 2028 | £750 |
| More than 6 months late | From 10 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 17022199
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 February 2026
- Registered office
- 33A Sunderland Road, London, SE23 2PS
- Nature of business
- Construction of domestic buildings (SIC 41202)
Joinery installation (SIC 43320)
Other building completion and finishing (SIC 43390)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 28 February (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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Frequently asked questions
When are Extendo Construct Ltd's accounts due?
Extendo Construct Ltd's next accounts are due at Companies House by 9 November 2027 (in 393 days), covering the period to 28 February 2027.
When is Extendo Construct 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 8 February 2027, due by 8 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Extendo Construct Ltd still trading?
Extendo Construct 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 Extendo Construct Ltd do?
Extendo Construct Ltd is registered under Construction of domestic buildings (SIC 41202); Joinery installation (SIC 43320); Other building completion and finishing (SIC 43390); Other specialised construction activities n.e.c. (SIC 43999).
How old is Extendo Construct Ltd?
Extendo Construct Ltd was incorporated on 9 February 2026, less than a year ago.
What is the penalty if Extendo Construct 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 Extendo Construct 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.