- Company number
- 12899654
- Incorporated
- 23 Sep 20206 years trading
- Registered office
- 17 Green Lanes, London, N16 9BS
- Nature of business
- Construction of domestic buildings; Other specialised construction activities n.e.c.; Unlicensed restaurants and cafes; Management consultancy activities other than financial management
3K Casa Ltd is a 6-year-old private limited company registered in London, company number 12899654, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the 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 3K Casa 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.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £31 (+17.9%) on the year before, to £204.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £204 | £2,828 | £2,624 | 2 | |
| 31 Aug 2024 | £173 | £3,044 | £3,044 | £2,871 | 1 |
| 31 Aug 2023 | £858 | £46K | £51K | £50K | 1 |
| 31 Aug 2022 | £194 | £535 | £8,495 | £8,301 | 1 |
| 31 Aug 2021 | £376 | £5,348 | £10K | £9,972 | 1 |
Where 3K Casa Ltd is registered
The registered office is in London (N16), in the Islington local authority area, London. Show N16 9BS on a map.
Other trade companies in N16
- Jrdesign&Renovations LtdCleaning companies
- RSV2Cleaning LtdCleaning companies
- Tura Property Solutions LtdBuilders
- Stokey Group LtdPlumbers and heating engineers
- Core Maintenance London LtdFinishing trades
- JSW Bathrooms LimitedElectricians
- Y.E.D. Building and Construction Services LtdPlumbers and heating engineers
- Olga Services LtdBuilders
Shared registered office
61 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if 3K Casa 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 12899654
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 September 2020 (6 years ago)
- Registered office
- 17 Green Lanes, London, N16 9BS
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other specialised construction activities n.e.c. (SIC 43999)
Unlicensed restaurants and cafes (SIC 56102)
Management consultancy activities other than financial management (SIC 70229) - Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 25 September 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.
- 3MF Construction and Electrical Company Ltd2013
- 3Sixty Interiors Ltd2023
- 3WM Developments Limited2022
- 4 Brothers Brickwork Limited2023
- 4 Brothers Cela Construction Ltd2024
- 4 Brothers Cela Ltd2020
- 4-6 ST Edmunds Terrace Limited2014
- 44 Cepele Construction Ltd2026
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are 3K Casa Ltd's accounts due?
3K Casa Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is 3K Casa Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is 3K Casa Ltd still trading?
3K Casa 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 3K Casa Ltd do?
3K Casa Ltd is registered under Construction of domestic buildings (SIC 41202); Other specialised construction activities n.e.c. (SIC 43999); Unlicensed restaurants and cafes (SIC 56102); Management consultancy activities other than financial management (SIC 70229).
How old is 3K Casa Ltd?
3K Casa Ltd was incorporated on 23 September 2020, 6 years ago.
What is the penalty if 3K Casa 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 3K Casa 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.