- Company number
- 15022223
- Incorporated
- 24 Jul 20233 years trading
- Registered office
- 8 Raleigh Walk, Brigantine Place, Cardiff, CF10 4LN
- Nature of business
- Construction of domestic buildings
RT Building Solutions South Wales Ltd is a 3-year-old private limited company registered in Cardiff, company number 15022223, one of 361 building contractors in Cardiff. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £987 (-16.4%) on the year before, to £5,023.
- Current assets of £4,198 against £22K owed within a year: 0.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | £5,023 | £4,198 | £4,198 | £22K | 1 |
| 31 Jul 2024 | £6,010 | £1,031 | £1,031 | £2,521 | 1 |
Where RT Building Solutions South Wales Ltd is registered
The registered office is in Cardiff (CF10), in the Cardiff local authority area, Wales. Show CF10 4LN on a map.
Other trade companies in CF10
- Hudcon LtdBuilders
- Skyline Pitched and Flat Roofing LtdRoofers
- Eclipse Construction Group LtdPlasterers
- DWR Plumbing LtdPlumbers and heating engineers
- CF Glazing LtdGlaziers
- Regency Construction Group LtdProperty developers
- Qproperty Solutions LimitedFinishing trades
- Express Vehicle Services (Cardiff) LimitedMechanics and garages
Also registered at this address
4 other companies use the same registered office as RT Building Solutions South Wales Ltd.
- Bryan Electrical LtdElectricians
- Major Gas Plumbing & Heating LtdRepair services
- MP Building and Facilities LtdFinishing trades
- NPGH LtdLandscapers and gardeners
What happens if RT Building Solutions South Wales 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 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 15022223
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 July 2023 (3 years ago)
- Registered office
- 8 Raleigh Walk, Brigantine Place, Cardiff, CF10 4LN
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 23 July 2025
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 Cardiff
Other active building contractors registered in Cardiff.
- S.A.S. Building Contractors Limited1994
- Sajdak Interiors Ltd2014
- Salam Property Maintenance Ltd2019
- Salvo and Son Construction Limited2022
- Savannah Rae Construction Ltd2025
- SBH Smart Construction Ltd2025
- Sean Bishop Building Limited2017
- Seg Quantity Surveying Limited2018
All building contractors in Cardiff · All trades in Cardiff · Builders across the UK
Frequently asked questions
When are RT Building Solutions South Wales Ltd's accounts due?
RT Building Solutions South Wales Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is RT Building Solutions South Wales Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is RT Building Solutions South Wales Ltd still trading?
RT Building Solutions South Wales Ltd is listed as active on the Companies House register (checked 13 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 RT Building Solutions South Wales Ltd do?
RT Building Solutions South Wales Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is RT Building Solutions South Wales Ltd?
RT Building Solutions South Wales Ltd was incorporated on 24 July 2023, 3 years ago.
What is the penalty if RT Building Solutions South Wales 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 RT Building Solutions South Wales Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.