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- Spark Structures Ltd
Company profile · Property developers
Spark Structures Ltd
Spark Structures Ltd is a 5-year-old private limited company registered in Swansea, company number 13601433, one of 273 property development companies in Swansea. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 September 2025, as filed at Companies House.
Spark Structures Ltd over the years
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 £337 (+96.6%) on the year before, to £686.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £14K against £13K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £686 | £7,239 | £14K | £13K | 1 |
| 30 Sep 2024 | £349 | £4,726 | £9,433 | £11K | 1 |
| 30 Sep 2023 | £2 | £8,277 | £9,369 | 1 | |
| 30 Sep 2022 | £5,304 | £3,914 | £15K | £9,830 | 0 |
Where Spark Structures Ltd is registered
The registered office is in Swansea (SA3), in the Swansea local authority area, Wales. Show SA3 2EN on a map.
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What happens if Spark Structures 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 13601433
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 September 2021 (5 years ago)
- Registered office
- Golf View Sandy Lane, Parkmill, Swansea, SA3 2EN
- Nature of business
- Development of building projects (SIC 41100)
Architectural activities (SIC 71111)
Engineering related scientific and technical consulting activities (SIC 71122)
Other engineering activities (SIC 71129) - Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 2 September 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Swansea
Other active property development companies registered in Swansea.
- SPM Assets Ltd2025
- Square on Ltd2024
- SSS Home Improvements Ltd2025
- Storr Rock Limited2002
- Swansea Development SPV 1 Ltd2019
- Swansea Developments Limited2020
- Swansea West Roofing & Scaffolding Limited2023
- Swansid Ltd2021
All property development companies in Swansea · All trades in Swansea · Property developers across the UK
Frequently asked questions
When are Spark Structures Ltd's accounts due?
Spark Structures Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Spark Structures Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Spark Structures Ltd still trading?
Spark Structures Ltd 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 Spark Structures Ltd do?
Spark Structures Ltd is registered under Development of building projects (SIC 41100); Architectural activities (SIC 71111); Engineering related scientific and technical consulting activities (SIC 71122); Other engineering activities (SIC 71129).
How old is Spark Structures Ltd?
Spark Structures Ltd was incorporated on 3 September 2021, 5 years ago.
What is the penalty if Spark Structures 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 Spark Structures Ltd 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.