- Companies
- Electricians
- Zanetti Building Services Ltd
Zanetti Building Services Ltd
- Company number
- 11355851
- Incorporated
- 11 May 20188 years trading
- Registered office
- 66 Greenhill Road, Sandford Winscombe, North Somerset, Bristol, BS25 5PB
- Nature of business
- Electrical installation; Plumbing, heat and air-conditioning installation; Other construction installation
Zanetti Building Services Ltd is a 8-year-old private limited company registered in North Somerset, company number 11355851, one of the UK's electrical contractors. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 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 £691K (+5.8%) on the year before, to £13M.
- Net assets rose in 7 of 7 year-on-year comparisons on record.
- Current assets of £1.9M against £191K owed within a year: 9.7 times cover.
- 2 employees on average, down from 5 the year before.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £13M | £1.3M | £1.9M | £191K | 2 |
| 31 May 2025 | £12M | £4.6M | £4.9M | £171K | 5 |
| 31 May 2024 | £11M | £1.3M | £1.9M | £259K | 5 |
| 31 May 2023 | £8.1M | £1.1M | £3.5M | £508K | 5 |
| 31 May 2022 | £7.1M | £7.6M | £7.6M | £558K | 5 |
| 31 May 2021 | £4.5M | £4.9M | £5M | £564K | 2 |
| 31 May 2020 | £1.5M | £1.8M | £354K | 2 | |
| 31 May 2019 | £519K | £789K | £271K |
Where Zanetti Building Services Ltd is registered
The registered office is in North Somerset (BS25), in the North Somerset local authority area, South West. Show BS25 5PB on a map.
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What happens if Zanetti Building Services 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 11355851
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 May 2018 (8 years ago)
- Registered office
- 66 Greenhill Road, Sandford Winscombe, North Somerset, Bristol, BS25 5PB
- Nature of business
- Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290) - Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 10 May 2026
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies
Other active electrical contractors.
Frequently asked questions
When are Zanetti Building Services Ltd's accounts due?
Zanetti Building Services Ltd's next accounts are due at Companies House by 29 February 2028 (in 504 days), covering the period to 31 May 2027.
When is Zanetti Building Services Ltd's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is Zanetti Building Services Ltd still trading?
Zanetti Building Services 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 Zanetti Building Services Ltd do?
Zanetti Building Services Ltd is registered under Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290).
How old is Zanetti Building Services Ltd?
Zanetti Building Services Ltd was incorporated on 11 May 2018, 8 years ago.
What is the penalty if Zanetti Building Services 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 Zanetti Building Services 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.