- Companies
- Civil engineering
- Calne
- Building Certification Ltd
Building Certification Ltd
- Company number
- 10346798
- Incorporated
- 25 Aug 201610 years trading
- Registered office
- 1 Market Hill, Calne, SN11 0BT
- Nature of business
- Construction of other civil engineering projects n.e.c.
Building Certification Ltd is a 10-year-old private limited company registered in Calne, company number 10346798, one of 6 civil engineering contractors in Calne. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 down £17K (-0.8%) on the year before, to £2.1M.
- Net assets rose in 6 of 8 year-on-year comparisons on record.
- Current assets of £2.1M against £47K owed within a year: more than 10 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £2.1M | £48K | £2.1M | £47K | 1 |
| 30 Sep 2024 | £2.1M | £19K | £2.1M | £51K | 1 |
| 30 Sep 2023 | £2.2M | £527K | £2.3M | £129K | 1 |
| 30 Sep 2022 | £2M | £572K | £2.2M | £158K | 1 |
| 30 Sep 2021 | £1.6M | £603K | £1.8M | £200K | 1 |
| 30 Sep 2020 | £1.2M | £419K | £1.3M | £140K | 1 |
| 30 Sep 2019 | £1.1M | £718K | £1.3M | £198K | 0 |
| 30 Sep 2018 | £682K | £641K | £841K | £158K | 1 |
| 31 Aug 2017 | £273K | £399K | £125K |
Where Building Certification Ltd is registered
The registered office is in Calne (SN11), in the Wiltshire local authority area, South West. Show SN11 0BT on a map.
Other trade companies in SN11
- Ionexis LimitedMachinery repair and installation
- B&L Mobile Car Repairs LtdMechanics and garages
- DCH Services (Wilts) LtdPlumbers and heating engineers
- Ezzyfix Auto Solutions LtdMotor traders
- Set Stone Tiling LtdBuilders
- C.D Substructures LtdBuilders
- Ever So Good Home Improvements LtdSpecialist contractors
- Hardy's Smart Repairs LtdMechanics and garages
Shared registered office
50 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 Building Certification 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 10346798
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 August 2016 (10 years ago)
- Registered office
- 1 Market Hill, Calne, SN11 0BT
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 10 November 2025
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Calne
Other active civil engineering contractors registered in Calne.
- Epplecomms Limited2022
- Preformed Markings (South West) Limited2009
- Randall Civil Engineering & Construction Ltd2025
- Wilkins Builders Limited1992
- A1 Electrics and Construction Limited2025
All civil engineering contractors in Calne · All trades in Calne · Civil engineering across the UK
Frequently asked questions
When are Building Certification Ltd's accounts due?
Building Certification Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Building Certification Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Building Certification Ltd still trading?
Building Certification 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 Building Certification Ltd do?
Building Certification Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Building Certification Ltd?
Building Certification Ltd was incorporated on 25 August 2016, 10 years ago.
What is the penalty if Building Certification 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 Building Certification 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.