- Companies
- Plumbers and heating engineers
- London
- Hammer Building Maintenance Ltd
Hammer Building Maintenance Ltd
- Company number
- 16367990
- Incorporated
- 6 Apr 20251 year trading
- Registered office
- Flat 21 Wickford House, Wickford Street, London, E1 4HW
- Nature of business
- Plumbing, heat and air-conditioning installation; Plastering; Other building completion and finishing
Hammer Building Maintenance Ltd is a 1-year-old private limited company registered in London, company number 16367990, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 6 January 2027, and its first CT600 is due at HMRC on 5 April 2027.
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 Hammer Building Maintenance Ltd is registered
The registered office is in London (E1), in the Tower Hamlets local authority area, London. Show E1 4HW on a map.
Other trade companies in E1
- Safa Builds LtdElectricians
- Ribh LtdElectricians
- Tyres on Call LtdMechanics and garages
- Hrautosources LtdMotor traders
- Choiceworks LimitedInstallers
- E.M Construction London LtdBuilders
- Qubic Maintenance LtdSpecialist contractors
- Moovin Transport LtdMechanics and garages
What happens if Hammer Building Maintenance 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 6 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 7 Jan 2027 to 6 Feb 2027 | £150 |
| 1 to 3 months late | 7 Feb 2027 to 6 Apr 2027 | £375 |
| 3 to 6 months late | 7 Apr 2027 to 6 Jul 2027 | £750 |
| More than 6 months late | From 7 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 16367990
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 April 2025 (1 year ago)
- Registered office
- Flat 21 Wickford House, Wickford Street, London, E1 4HW
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Plastering (SIC 43310)
Other building completion and finishing (SIC 43390) - Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 5 April 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.
- Hammersmith Heating Ltd2019
- Hampstead Plumbing & Heating Ltd2010
- Hampstead Plumbing Ltd2017
- Hampton Middleeast Limited2026
- Hampton Plumbers Ltd2026
- Hamsher Plumbing & Heating Limited2025
- Handigopro Ltd2026
- Handyman Services DT Limited2025
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Hammer Building Maintenance Ltd's accounts due?
Hammer Building Maintenance Ltd's next accounts are due at Companies House by 6 January 2027 (in 85 days), covering the period to 30 April 2026.
When is Hammer Building Maintenance 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 5 April 2026, due by 5 April 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Hammer Building Maintenance Ltd still trading?
Hammer Building Maintenance 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 Hammer Building Maintenance Ltd do?
Hammer Building Maintenance Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Plastering (SIC 43310); Other building completion and finishing (SIC 43390).
How old is Hammer Building Maintenance Ltd?
Hammer Building Maintenance Ltd was incorporated on 6 April 2025, 1 year ago.
What is the penalty if Hammer Building Maintenance 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 Hammer Building Maintenance 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.