- Companies
- Finishing trades
- London
- Sam Building Service Ltd
Sam Building Service Ltd
- Company number
- 10517979
- Incorporated
- 9 Dec 20169 years trading
- Registered office
- 11 Portland Road, London, SE25 4UF
- Nature of business
- Other building completion and finishing
Sam Building Service Ltd is a 9-year-old private limited company registered in London, company number 10517979, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
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 £723 (+794.5%) on the year before, to £632.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £5,416 against £4,784 owed within a year: 1.1 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £632 | £5,416 | £4,784 | 1 | |
| 31 Dec 2024 | -£91 | £1,308 | £1,399 | 2 | |
| 31 Dec 2023 | £281 | £9,267 | £8,986 | 2 | |
| 31 Dec 2022 | £5,073 | £4,786 | £2,113 | 2 | |
| 31 Dec 2021 | £10K | £5,961 | £294 | 2 | |
| 31 Dec 2020 | £11K | £14K | £235 | 2 | |
| 31 Dec 2019 | £6,012 | £7,945 | £1,933 | 2 | |
| 31 Dec 2018 | -£228 | £108 | £336 | ||
| 31 Dec 2017 | £342 | £921 | £579 |
Where Sam Building Service Ltd is registered
The registered office is in London (SE25), in the Croydon local authority area, London. Show SE25 4UF on a map.
Other trade companies in SE25
- Luna Plumbing LtdPlumbers and heating engineers
- Mendivra LtdJoiners and carpenters
- Squeaky Mastery Services LtdCleaning companies
- MM(P)M LtdProperty developers
- Meysam Electrical LtdElectricians
- Madej Property Maintenance LtdFinishing trades
- Leonardo Bespoke Joinery LtdJoiners and carpenters
- GCS Electrical Services LimitedElectricians
Shared registered office
32 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 Sam Building Service 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 10517979
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 December 2016 (9 years ago)
- Registered office
- 11 Portland Road, London, SE25 4UF
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 2 December 2025
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in London
Other active building finishing companies registered in London.
- Sam&Sons Construction Ltd2022
- Samc Project Ltd2024
- Samsony Labour Service Limited2012
- Samuil & Brother Ltd2018
- Samul Construction Limited2010
- Samy&Levi Ltd2015
- Sanarch Limited2000
- Sandarov Ltd2009
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are Sam Building Service Ltd's accounts due?
Sam Building Service Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Sam Building Service Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Sam Building Service Ltd still trading?
Sam Building Service 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 Sam Building Service Ltd do?
Sam Building Service Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Sam Building Service Ltd?
Sam Building Service Ltd was incorporated on 9 December 2016, 9 years ago.
What is the penalty if Sam Building Service 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 Sam Building Service 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.