- Company number
- 12741398
- Incorporated
- 14 Jul 20206 years trading
- Registered office
- Pembroke House, Llantarnam Park Way, Cwmbran, Torfaen, NP44 3AU
- Nature of business
- Construction of domestic buildings
Building Bloc Limited is a 6-year-old private limited company registered in Cwmbran, company number 12741398, one of 26 building contractors in Cwmbran. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £1,084 on the year before, to -£1,081.
- Net assets rose in 1 of 5 year-on-year comparisons on record.
- Current assets of £23K against £24K owed within a year: 1.0 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | -£1,081 | £111 | £23K | £24K | 2 |
| 31 Aug 2024 | £3 | £14 | £23K | £23K | 2 |
| 31 Mar 2024 | -£80K | £726 | £651K | £620K | 2 |
| 31 Mar 2023 | -£50K | £4,922 | £432K | £425K | 2 |
| 31 Mar 2022 | -£4,248 | £35K | £176K | £131K | 2 |
| 31 Mar 2021 | -£998 | £9,128 | £10K | 2 |
Where Building Bloc Limited is registered
The registered office is in Cwmbran (NP44), in the Torfaen local authority area, Wales. Show NP44 3AU on a map.
Other trade companies in NP44
- Compliant Fire Safety Solutions LtdInstallers
- V&K Solutions LimitedCivil engineering
- Pure Clean by Nichola LtdCleaning companies
- Amsof LimitedPlumbers and heating engineers
- Marchant Home Solutions Ltd LtdBuilders
- True Level Concrete LtdBuilders
- A2Z Tech LimitedMachinery repair and installation
- Days Ventilation Solutions LtdPlumbers and heating engineers
Also registered at this address
21 other companies use the same registered office as Building Bloc Limited.
- Beaufort Property Development LimitedCivil engineering
- CJL Electrical Solutions LtdElectricians
- Crownhill Monmouthshire LimitedSpecialist contractors
- Cymru Glass & Glazing LimitedGlaziers
- D E Building Contractors LimitedSpecialist contractors
- D M O’Brien Construction LtdFinishing trades
- Flo-Screed UK LimitedFloor and wall tilers
- G M Plant Repairs LimitedMachinery repair and installation
- G.H.P Mechanical and Electrical LimitedFinishing trades
- K B Building Contractors LimitedBuilders
- L Golledge Roofing LimitedRoofers
- L&L Scaffolding Solutions LtdScaffolders
- LMB Plumbing & Heating LimitedPlumbers and heating engineers
- N G Construction LimitedFinishing trades
- R Senior & Son LimitedBuilders
- Remnant Developments LtdProperty developers
- Rival Scaffolding LtdScaffolders
- Robert Russell Property Services LimitedElectricians
- S J R Fleet Assist LtdMachinery repair and installation
- Sonas Holdings Hereford LimitedSpecialist contractors
- The Car Hotel LtdMotor traders
What happens if Building Bloc Limited 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 12741398
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2020 (6 years ago)
- Registered office
- Pembroke House, Llantarnam Park Way, Cwmbran, Torfaen, NP44 3AU
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 13 July 2026
- Charges (mortgages)
- 3 outstanding of 3 registered
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 Cwmbran
Other active building contractors registered in Cwmbran.
- County Construction Solutions Ltd2023
- CW Mould Solutions Ltd2025
- D T Contracting (South West) Limited2013
- Daly Grind Ltd2026
- Facilities Maintenance Group Limited2003
- Jclad Cladding and Windows Ltd2021
- K B Building Contractors Limited2017
- K J Building Developers Ltd2025
All building contractors in Cwmbran · All trades in Cwmbran · Builders across the UK
Frequently asked questions
When are Building Bloc Limited's accounts due?
Building Bloc Limited's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Building Bloc Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Building Bloc Limited still trading?
Building Bloc Limited 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 Bloc Limited do?
Building Bloc Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Building Bloc Limited?
Building Bloc Limited was incorporated on 14 July 2020, 6 years ago.
What is the penalty if Building Bloc Limited 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 Bloc Limited 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.