- Company number
- 15835545
- Incorporated
- 12 Jul 20242 years trading
- Registered office
- 338A Regents Park Road, Office 3 and 4, London, N3 2LN
- Nature of business
- Construction of domestic buildings; Other specialised construction activities n.e.c.; Retail sale via mail order houses or via Internet; Other passenger land transport
Happy Build Ltd is a 2-year-old private limited company registered in London, company number 15835545, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £1,499 (+350.2%) on the year before, to £1,927.
- Current assets of £4,261 against £2,334 owed within a year: 1.8 times cover.
- 1 employee on average, up from 0 the year before.
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2026 | £1,927 | £1,231 | £4,261 | £2,334 | 1 |
| 30 Jun 2025 | £428 | £3,104 | £2,676 | 0 |
Where Happy Build Ltd is registered
The registered office is in London (N3), in the Barnet local authority area, London. Show N3 2LN on a map.
Other trade companies in N3
- Key & Keep LtdCleaning companies
- GMS Residential LimitedPlumbers and heating engineers
- Gcap East LtdProperty developers
- Tatras Development LimitedProperty developers
- Chesterfield Corinne LtdProperty developers
- Pure Plumbing Pros LimitedPlumbers and heating engineers
- WS Cleaning Services LtdCleaning companies
- Landfall Projects LimitedProperty developers
Shared registered office
52 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 Happy Build 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 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 15835545
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 July 2024 (2 years ago)
- Registered office
- 338A Regents Park Road, Office 3 and 4, London, N3 2LN
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other specialised construction activities n.e.c. (SIC 43999)
Retail sale via mail order houses or via Internet (SIC 47910)
Other passenger land transport (SIC 49390) - Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2026
- Last confirmation statement
- 31 March 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.
- Happy Cleaning Ltd2017
- Happy House Project Ltd2024
- Haque Property & Construction Ltd2025
- Harbour Refurbishment Ltd2021
- Harbour Roofing and Reclamation Ltd2026
- Hard Hat Builders Limited2020
- Hardhat Ltd2026
- Harding & Son Construction Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Happy Build Ltd's accounts due?
Happy Build Ltd's next accounts are due at Companies House by 31 March 2028 (in 535 days), covering the period to 30 June 2027.
When is Happy Build Ltd's CT600 due?
The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.
Is Happy Build Ltd still trading?
Happy Build 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 Happy Build Ltd do?
Happy Build Ltd is registered under Construction of domestic buildings (SIC 41202); Other specialised construction activities n.e.c. (SIC 43999); Retail sale via mail order houses or via Internet (SIC 47910); Other passenger land transport (SIC 49390).
How old is Happy Build Ltd?
Happy Build Ltd was incorporated on 12 July 2024, 2 years ago.
What is the penalty if Happy Build 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 Happy Build 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.