- Companies
- Property developers
- Swansea
- Astrum Construction Ltd
Astrum Construction Ltd
- Company number
- 06432185
- Incorporated
- 20 Nov 200718 years trading
- Registered office
- Glanyrafon Walters Road, Cwmllynfell, Swansea, SA9 2FH
- Nature of business
- Development of building projects
Astrum Construction Ltd is a 18-year-old private limited company registered in Swansea, company number 06432185, one of 273 property development companies in Swansea. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Astrum Construction LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £68K (+7%) on the year before, to £1M.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £1.5M against £501K owed within a year: 3.0 times cover.
- 4 employees on average, down from 7 the year before.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £1M | £96K | £1.5M | £501K | 4 |
| 31 Mar 2025 | £963K | £112K | £1.5M | £582K | 7 |
| 31 Mar 2024 | £951K | £96K | £1.4M | £436K | 7 |
| 31 Mar 2023 | £883K | £81K | £1.2M | £306K | 7 |
| 31 Mar 2022 | £770K | £30K | £1M | £295K | 5 |
| 31 Mar 2021 | £665K | £225K | £870K | £238K | 4 |
| 31 Mar 2020 | £477K | £128K | £657K | £234K | 2 |
| 31 Mar 2019 | £319K | £107K | £429K | £144K | |
| 31 Mar 2018 | £156K | £87K | £232K | £106K | |
| 31 Mar 2017 | £40K | £73K | £35K |
Where Astrum Construction Ltd is registered
The registered office is in Swansea (SA9), in the Neath Port Talbot local authority area, Wales. Show SA9 2FH on a map.
Other trade companies in SA9
- Eidolon Renovations LtdPlumbers and heating engineers
- Michael Jones Renovations LtdProperty developers
- Cyfyng Road Developments LtdFinishing trades
- Orwell’S Accident Repair LtdMechanics and garages
- WLM Car and Commercial Services LtdMotor traders
- Tom Graham Maintenance LtdFinishing trades
- Precious Time Cleaning Solutions LtdCleaning companies
- TD Heating Solutions LtdPlumbers and heating engineers
What happens if Astrum Construction 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 06432185
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 November 2007 (18 years ago)
- Registered office
- Glanyrafon Walters Road, Cwmllynfell, Swansea, SA9 2FH
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 11 November 2025
- Previous names
- Astrum (MK) Limited (until 1 Jun 2017)
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.
- Avies (City Developments) Limited2016
- Baltic House Development Cardiff Limited2021
- Barry Developments SPV 1 Ltd2020
- Bayonne Limited2015
- BB2 Ltd2006
- Biophilic Life Limited2021
- Black Frame Living Ltd2026
- BM Investments Ltd2025
All property development companies in Swansea · All trades in Swansea · Property developers across the UK
Frequently asked questions
When are Astrum Construction Ltd's accounts due?
Astrum Construction Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Astrum Construction Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Astrum Construction Ltd still trading?
Astrum Construction 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 Astrum Construction Ltd do?
Astrum Construction Ltd is registered under Development of building projects (SIC 41100).
How old is Astrum Construction Ltd?
Astrum Construction Ltd was incorporated on 20 November 2007, 18 years ago.
What is the penalty if Astrum Construction 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 Astrum Construction 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.