- Company number
- 15811004
- Incorporated
- 1 Jul 20242 years trading
- Registered office
- 189 Cemetery Road, Dunstable, Bedfordshire, LU5 5DF
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings
Rmag Construction Ltd is a 2-year-old private limited company registered in Dunstable, company number 15811004, one of 213 building contractors in Dunstable. 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.
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 Rmag 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.
Financial snapshot, 2025
From the balance sheet at 31 July 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Where Rmag Construction Ltd is registered
The registered office is in Dunstable (LU5), in the Central Bedfordshire local authority area, East of England. Show LU5 5DF on a map.
Other trade companies in LU5
- Holz Stehlen Interiors LtdJoiners and carpenters
- Group V Motors LimitedMotor traders
- Marsiv LtdBuilders
- FB Engineering Solutions LtdSpecialist contractors
- Valmir Plastering LtdPlasterers
- Jeeva Engineering LtdCivil engineering
- Shinning Stars Cleaning LtdCleaning companies
- Coc Floring LtdBuilders
Also registered at this address
1 other company uses the same registered office as Rmag Construction Ltd.
- Bida Construction LtdBuilders
What happens if Rmag 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 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
- 15811004
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 July 2024 (2 years ago)
- Registered office
- 189 Cemetery Road, Dunstable, Bedfordshire, LU5 5DF
- Nature of business
- Construction of commercial buildings (SIC 41201)
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
- 30 June 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 Dunstable
Other active building contractors registered in Dunstable.
- Rolldecor Services Ltd2025
- Roofmart (Contracting) MK Ltd2006
- Ruxler Ltd2019
- S C Ayres Developments Ltd2026
- S&T Flooring Construction Ltd2024
- S.A.D.E. Limited2016
- S.M Engineering and Construction Limited2025
- Sae Property Maintenance Limited2023
All building contractors in Dunstable · All trades in Dunstable · Builders across the UK
Frequently asked questions
When are Rmag Construction Ltd's accounts due?
Rmag Construction 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 Rmag Construction 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 Rmag Construction Ltd still trading?
Rmag 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 Rmag Construction Ltd do?
Rmag Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202).
How old is Rmag Construction Ltd?
Rmag Construction Ltd was incorporated on 1 July 2024, 2 years ago.
What is the penalty if Rmag 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 Rmag 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.