- Companies
- Plumbers and heating engineers
- London
- Extreme Building Solutions Ltd
Extreme Building Solutions Ltd
- Company number
- 17102329
- Incorporated
- 19 Mar 2026
- Registered office
- 639 Green Lanes, London, N8 0RE
- Nature of business
- Plumbing, heat and air-conditioning installation; Other specialised construction activities n.e.c.
Extreme Building Solutions Ltd is a newly incorporated private limited company registered in London, company number 17102329, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 19 December 2027, and its first CT600 is due at HMRC on 18 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?
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 Extreme Building Solutions 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.
Who runs and owns Extreme Building Solutions Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| C*** K*** | Director | Mar 2026 |
Person with significant control
Where Extreme Building Solutions Ltd is registered
The registered office is in London (N8), in the Haringey local authority area, London. Show N8 0RE on a map.
Other trade companies in N8
- Magic Clean 99 LtdCleaning companies
- M C Driveways and Building LimitedBuilders
- M C Properties Investment LimitedBuilders
- Hilton Construction Group LtdBuilders
- Apex Integrated Cleaning LtdCleaning companies
- Ogb Projects London LtdFloor and wall tilers
- N8 Auto LtdMechanics and garages
- Nexuswire UK LtdElectricians
Also registered at this address
2 other companies use the same registered office as Extreme Building Solutions Ltd.
- Apex Integrated Cleaning LtdCleaning companies
- Udug Services LimitedCleaning companies
What happens if Extreme Building Solutions 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 19 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 Dec 2027 to 19 Jan 2028 | £150 |
| 1 to 3 months late | 20 Jan 2028 to 19 Mar 2028 | £375 |
| 3 to 6 months late | 20 Mar 2028 to 19 Jun 2028 | £750 |
| More than 6 months late | From 20 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
- 17102329
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 March 2026
- Registered office
- 639 Green Lanes, London, N8 0RE
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Previous names
- C Karadi London Limited (until 26 Mar 2026)
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 London
Other active plumbing and heating companies registered in London.
- Ey Plumbing and Heating Ltd2026
- F G Gas Engineering Limited2009
- F Kironde Crown Deco Ltd2025
- F.C. Sherman & Co (Heating) Limited1998
- Fabian Property Works Ltd2025
- Fairfield Plumbing & Heating Services Ltd2000
- Fairmont Mechanical Group Ltd2026
- Fairmont Refrigeration Ltd.2025
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Extreme Building Solutions Ltd's accounts due?
Extreme Building Solutions Ltd's next accounts are due at Companies House by 19 December 2027 (in 432 days), covering the period to 31 March 2027.
When is Extreme Building Solutions 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 18 March 2027, due by 18 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 Extreme Building Solutions Ltd still trading?
Extreme Building Solutions 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 Extreme Building Solutions Ltd do?
Extreme Building Solutions Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other specialised construction activities n.e.c. (SIC 43999).
How old is Extreme Building Solutions Ltd?
Extreme Building Solutions Ltd was incorporated on 19 March 2026, less than a year ago.
Who runs Extreme Building Solutions Ltd?
Extreme Building Solutions Ltd has 1 active director, the longest-serving appointed in Mar 2026. Their names and service addresses are on the Companies House register.
Who owns Extreme Building Solutions Ltd?
One person or company has significant control of Extreme Building Solutions Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Extreme Building Solutions 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 Extreme Building Solutions 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.