- Company number
- 00657200
- Incorporated
- 25 Apr 196066 years trading
- Registered office
- High Street Pentwynmawr, Newbridge, Newport, Gwent, NP11 4HN
- Nature of business
- Construction of commercial buildings
Dinas Building Company Limited is a 66-year-old private limited company registered in Newport, company number 00657200, one of 204 building contractors in Newport. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £119K (+17.1%) on the year before, to £814K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £941K against £154K owed within a year: 6.1 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £814K | £667K | £941K | £154K | 0 |
| 31 Mar 2024 | £696K | £602K | £833K | £168K | 5 |
| 31 Mar 2023 | £558K | £502K | £627K | £103K | 6 |
| 31 Mar 2022 | £460K | £560K | £126K | 6 | |
| 31 Mar 2021 | £410K | £484K | £103K | 6 | |
| 31 Mar 2020 | £354K | £450K | £127K | 8 | |
| 31 Mar 2019 | £210K | £127K | £394K | £209K | 8 |
| 31 Mar 2018 | £173K | £38K | £336K | £184K | 8 |
| 31 Mar 2017 | £215K | £104K | £372K | £177K | 8 |
| 31 Mar 2016 | £193K | £68K | £352K | £180K |
Who runs and owns Dinas Building Company Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| J*** M*** | Director | before Dec 1990 |
| R*** M*** | Director | before Dec 1990 |
| J*** M*** | Secretary | Mar 1994 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| R*** M*** | Secretary | Mar 1994 | |
| C*** M*** | Director | Mar 1994 | |
| R*** M*** | Director | Mar 1994 |
People with significant control (2)
Charges (secured borrowing)
1 of 4 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Barclays Bank PLC | Outstanding | Dec 1991 |
| Barclays Bank PLC | Satisfied Mar 2004 | Aug 1994 |
| Barclays Bank PLC | Satisfied Mar 2004 | Jul 1975 |
| Barclays Bank PLC | Satisfied Mar 2004 | Oct 1962 |
Where Dinas Building Company Limited is registered
The registered office is in Newport (NP11), in the Caerphilly local authority area, Wales. Show NP11 4HN on a map.
Other trade companies in NP11
- Fast Fit Auto Group LtdMechanics and garages
- Down to Earth Tree and Landscapes LimitedLandscapers and gardeners
- Joyner Electrical and Renewables LimitedFinishing trades
- Druids Construction LimitedLandscapers and gardeners
- Mark Edwards Building LimitedLandscapers and gardeners
- MJC Electrical Solutions LimitedElectricians
- Cwmcarn Hand Car Wash LtdCleaning companies
- Lawa Auto LtdMotor traders
What happens if Dinas Building Company 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 00657200
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 April 1960 (66 years ago)
- Registered office
- High Street Pentwynmawr, Newbridge, Newport, Gwent, NP11 4HN
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 2 February 2026
- Charges (mortgages)
- 1 outstanding of 4 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 Newport
Other active building contractors registered in Newport.
- DJD Builders Limited2012
- DJH Steel Fixing Ltd2020
- DLR Bricklaying and Building Ltd2020
- Don Church Building Contractors Limited2002
- Double Blue Destiny Ltd.2015
- Duffy Tunnelling (South Wales) Limited2008
- East Wiltshire Builders Limited2019
- Eco Build Property Solutions Limited2017
All building contractors in Newport · All trades in Newport · Builders across the UK
Frequently asked questions
When are Dinas Building Company Limited's accounts due?
Dinas Building Company Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Dinas Building Company Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Dinas Building Company Limited still trading?
Dinas Building Company 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 Dinas Building Company Limited do?
Dinas Building Company Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Dinas Building Company Limited?
Dinas Building Company Limited was incorporated on 25 April 1960, 66 years ago.
Who runs Dinas Building Company Limited?
Dinas Building Company Limited has 2 active directors. Their names and service addresses are on the Companies House register.
Who owns Dinas Building Company Limited?
2 people or companies have significant control of Dinas Building Company Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Dinas Building Company 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 Dinas Building Company 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.