- Companies
- Finishing trades
- Swansea
- JM Building Contractors (Swansea) Limited
JM Building Contractors (Swansea) Limited
- Company number
- 10655815
- Incorporated
- 7 Mar 20179 years trading
- Registered office
- 26 Beaconsfield Way, Sketty, Swansea, SA2 9JR
- Nature of business
- Other building completion and finishing
JM Building Contractors (Swansea) Limited is a 9-year-old private limited company registered in Swansea, company number 10655815, one of 105 building finishing companies in Swansea. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 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 £44K (+38.2%) on the year before, to £160K.
- Net assets rose in 7 of 7 year-on-year comparisons on record.
- Current assets of £243K against £121K owed within a year: 2.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £160K | £175K | £243K | £121K | 0 |
| 31 Mar 2024 | £116K | £103K | £162K | £84K | 3 |
| 31 Mar 2023 | £93K | £56K | £108K | £52K | 3 |
| 31 Mar 2022 | £85K | £73K | £94K | £45K | 2 |
| 31 Mar 2021 | £60K | £55K | £70K | £50K | 2 |
| 31 Mar 2020 | £59K | £39K | £71K | £45K | 3 |
| 31 Mar 2019 | £21K | £37K | £62K | £55K | 1 |
| 31 Mar 2018 | £15K | £17K | £27K | £31K |
Where JM Building Contractors (Swansea) Limited is registered
The registered office is in Swansea (SA2), in the Swansea local authority area, Wales. Show SA2 9JR on a map.
Other trade companies in SA2
- Living Landscapes Commercial LtdLandscapers and gardeners
- DC Plumbing & Construction LtdBuilders
- Ginger Property Services LimitedProperty developers
- Smart Space Living LtdJoiners and carpenters
- Paul Vernon HV Sap LimitedCivil engineering
- L.H Hiab & Recovery LimitedMechanics and garages
- Lewis Tarmac LtdCivil engineering
- Tolzini Cleaning Services LtdCleaning companies
What happens if JM Building Contractors (Swansea) 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 30 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 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 | 31 Mar 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 | 30 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
- 10655815
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 March 2017 (9 years ago)
- Registered office
- 26 Beaconsfield Way, Sketty, Swansea, SA2 9JR
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 6 March 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Swansea
Other active building finishing companies registered in Swansea.
- K&S Building Innovation Ltd2025
- KB Plastering & Construction Limited2024
- Launch Brickwork Limited2006
- LFN Building and Home Improvements Limited2014
- LW Property Solutions Ltd2026
- LWRS Ltd2026
- M & Q Kitchen Ltd2026
- Man About the House Ltd2022
All building finishing companies in Swansea · All trades in Swansea · Finishing trades across the UK
Frequently asked questions
When are JM Building Contractors (Swansea) Limited's accounts due?
JM Building Contractors (Swansea) Limited's next accounts are due at Companies House by 30 December 2026 (in 78 days), covering the period to 30 March 2026.
When is JM Building Contractors (Swansea) Limited's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is JM Building Contractors (Swansea) Limited still trading?
JM Building Contractors (Swansea) 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 JM Building Contractors (Swansea) Limited do?
JM Building Contractors (Swansea) Limited is registered under Other building completion and finishing (SIC 43390).
How old is JM Building Contractors (Swansea) Limited?
JM Building Contractors (Swansea) Limited was incorporated on 7 March 2017, 9 years ago.
What is the penalty if JM Building Contractors (Swansea) 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 JM Building Contractors (Swansea) 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.