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Company profile · Builders
SM5 Developments Ltd
SM5 Developments Ltd is a 7-year-old private limited company registered in Southampton, company number 11629923, one of 491 building contractors in Southampton. Its next accounts are due at Companies House on 31 October 2026, and its first CT600 is due at HMRC on 31 October 2026.
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 31 October 2025, as filed at Companies House.
SM5 Developments 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 £518K (+27.6%) on the year before, to £2.4M.
- Net assets rose in 6 of 6 year-on-year comparisons on record.
- Current assets of £4.8M against £2.4M owed within a year: 2.0 times cover.
- 16 employees on average, up from 13 the year before.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £2.4M | £2.2M | £4.8M | £2.4M | 16 |
| 31 Oct 2024 | £1.9M | £3M | £4.9M | £3.1M | 13 |
| 31 Oct 2023 | £734K | £929K | £1.6M | £910K | 9 |
| 31 Oct 2022 | £476K | £480K | £1.4M | £989K | 5 |
| 31 Oct 2021 | £278K | £504K | £194K | 3 | |
| 31 Oct 2020 | £63K | £122K | £61K | 3 | |
| 31 Oct 2019 | £31K | £56K | £24K |
Public contracts won
SM5 Developments Ltd has 5 public sector contract awards on record; the ones with their own published value total £3.2M, from 2023 to 2026. Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| The University of Chichester | Refurbishment of Springfield 1 and Hammond 2 Accommodation Blocks | £915K | 19 Feb 2026 |
| University of Southampton | Refurbishment of Building 85 Common Learning Space | £521K | 18 Sep 2024 |
| University of Southampton | Long Term Maintenance for Halls (2024) - Glen Eyre Package | £743K | 9 Jul 2024 |
| University of Southampton | Wide Lane Pavilion Internal Refurbishment | £355K | 25 Oct 2023 |
| University of Southampton | Wessex Lane (Monte 3) Communal Space Refresh Project | £628K | 16 Jun 2023 |
Where SM5 Developments Ltd is registered
The registered office is in Southampton (SO18), in the Southampton local authority area, South East. Show SO18 1AY on a map.
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What happens if SM5 Developments 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 11629923
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 October 2018 (7 years ago)
- Registered office
- Four Maries Yard, 31 Vespasian Road, Southampton, Hampshire, SO18 1AY
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2024
- Last confirmation statement
- 17 October 2025
- Previous names
- Tomoz Projects Ltd (until 22 Jan 2019)
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 Southampton
Other active building contractors registered in Southampton.
- SMH Plumbing and Heating Ltd2020
- Smolin Services Ltd2026
- So31 Construction Ltd2018
- Solent Bespoke Projects Limited2025
- Solentum Limited2026
- Solid Build Contractors Ltd2021
- Sonix Ltd2026
- Soton Construction Ltd2018
All building contractors in Southampton · All trades in Southampton · Builders across the UK
Frequently asked questions
When are SM5 Developments Ltd's accounts due?
SM5 Developments Ltd's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is SM5 Developments Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 October 2025, due by 31 October 2026, and one for the period to 31 January 2026, due by 31 January 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is SM5 Developments Ltd still trading?
SM5 Developments 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 SM5 Developments Ltd do?
SM5 Developments Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is SM5 Developments Ltd?
SM5 Developments Ltd was incorporated on 18 October 2018, 7 years ago.
Has SM5 Developments Ltd won public sector contracts?
Yes. SM5 Developments Ltd has 5 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £3.2M), most recently from THE UNIVERSITY OF CHICHESTER.
What is the penalty if SM5 Developments 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 SM5 Developments 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.