- Companies
- Builders
- Aberystwyth
- J & SW Building Company Limited
J & SW Building Company Limited
- Company number
- 11309346
- Incorporated
- 13 Apr 20188 years trading
- Registered office
- 6.4 Parc Merlin Glan Yr Afon Industrial Estate, Llanbadarn Fawr, Aberystwyth, SY23 3JQ
- Nature of business
- Construction of domestic buildings
J & SW Building Company Limited is a 8-year-old private limited company registered in Aberystwyth, company number 11309346, one of 19 building contractors in Aberystwyth. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £208K (+34.3%) on the year before, to £813K.
- Net assets rose in 6 of 6 year-on-year comparisons on record.
- Current assets of £2.2M against £1.5M owed within a year: 1.4 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £813K | £167K | £2.2M | £1.5M | 0 |
| 30 Apr 2024 | £605K | £434K | £1.9M | £1.4M | 0 |
| 30 Apr 2023 | £414K | £12K | £1.7M | £1.4M | 0 |
| 30 Apr 2022 | £268K | £3,670 | £1.4M | £1.3M | 0 |
| 30 Apr 2021 | £188K | £461K | £1M | £776K | 0 |
| 30 Apr 2020 | £72K | £128K | £1M | £969K | 0 |
| 30 Apr 2019 | £8,590 | £285K | £806K | £798K |
Where J & SW Building Company Limited is registered
The registered office is in Aberystwyth (SY23), in the Ceredigion local authority area, Wales. Show SY23 3JQ on a map.
Other trade companies in SY23
- The Sustainable Living Group LtdBuilders
- Mid-Wales Developments LtdBuilders
- Samakara LtdProperty developers
- Blue Ladder Properties LtdProperty developers
- H Martin Thomas LtdSpecialist contractors
- Mykola's Autorepairs LimitedMechanics and garages
- Asj Exterior Solutions LtdCleaning companies
- Hivos UK LtdMotor traders
What happens if J & SW 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 11309346
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 April 2018 (8 years ago)
- Registered office
- 6.4 Parc Merlin Glan Yr Afon Industrial Estate, Llanbadarn Fawr, Aberystwyth, SY23 3JQ
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 12 April 2026
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 Aberystwyth
Other active building contractors registered in Aberystwyth.
- Lawrence and Williams Construction Ltd.1998
- Leb Construction Limited2015
- Mynydd Construction Ltd2023
- R Hopkins Construction Ltd2021
- The Sustainable Living Group Ltd2026
- Timber Design Wales Ltd2023
- A J Price Carpenter and Builder Ltd2022
- Aber Developments Limited2002
All building contractors in Aberystwyth · All trades in Aberystwyth · Builders across the UK
Frequently asked questions
When are J & SW Building Company Limited's accounts due?
J & SW Building Company Limited's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is J & SW Building Company Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is J & SW Building Company Limited still trading?
J & SW 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 J & SW Building Company Limited do?
J & SW Building Company Limited is registered under Construction of domestic buildings (SIC 41202).
How old is J & SW Building Company Limited?
J & SW Building Company Limited was incorporated on 13 April 2018, 8 years ago.
What is the penalty if J & SW 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 J & SW 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.