- Company number
- 17446776
- Incorporated
- 8 Sep 2026
- Registered office
- Windover House, ST. Ann Street, Salisbury, SP1 2DR
- Nature of business
- Construction of commercial buildings
Modular Build Systems Limited is a newly incorporated private limited company registered in Salisbury, company number 17446776, one of 113 building contractors in Salisbury. Its next accounts are due at Companies House on 8 June 2028, and its first CT600 is due at HMRC on 7 September 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Modular Build Systems Limited is registered
The registered office is in Salisbury (SP1), in the Wiltshire local authority area, South West. Show SP1 2DR on a map.
Other trade companies in SP1
- Brennan Building Projects LimitedProperty developers
- MR Mover and Rescue LimitedMechanics and garages
- LC Carpentry & Construction LtdFinishing trades
- Endlessuk LimitedSpecialist contractors
- Brad’S Tree & Landscape Services LtdLandscapers and gardeners
- Riverside House (Developments) LimitedProperty developers
- Alf Construction (Southern) LtdBuilders
- Knight Tanker Services LimitedMechanics and garages
Shared registered office
51 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Modular Build Systems 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 8 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 9 Jun 2028 to 8 Jul 2028 | £150 |
| 1 to 3 months late | 9 Jul 2028 to 8 Sep 2028 | £375 |
| 3 to 6 months late | 9 Sep 2028 to 8 Dec 2028 | £750 |
| More than 6 months late | From 9 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 17446776
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 September 2026
- Registered office
- Windover House, ST. Ann Street, Salisbury, SP1 2DR
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
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 Salisbury
Other active building contractors registered in Salisbury.
- Munro Construction Ltd2025
- N.C. Press Limited1978
- New Forest National Park Building Limited2012
- Northover Construction and Plant Ltd2021
- R & D Kitchens and Bathrooms Limited2024
- R and R Building Contractors Limited2012
- R K Bayford Building Contractors Ltd2016
- R&C Developments Limited2003
All building contractors in Salisbury · All trades in Salisbury · Builders across the UK
Frequently asked questions
When are Modular Build Systems Limited's accounts due?
Modular Build Systems Limited's next accounts are due at Companies House by 8 June 2028 (in 605 days), covering the period to 30 September 2027.
When is Modular Build Systems Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 7 September 2027, due by 7 September 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Modular Build Systems Limited still trading?
Modular Build Systems 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 Modular Build Systems Limited do?
Modular Build Systems Limited is registered under Construction of commercial buildings (SIC 41201).
How old is Modular Build Systems Limited?
Modular Build Systems Limited was incorporated on 8 September 2026, less than a year ago.
What is the penalty if Modular Build Systems 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 Modular Build Systems 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.