- Company number
- 09583211
- Incorporated
- 9 May 201511 years trading
- Registered office
- Ravensfield West Fen Drainside, Frithville, Boston, Lincolnshire, PE22 7EU
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other construction installation; Other building completion and finishing
S. T. Portess & Son Ltd is a 11-year-old private limited company registered in Boston, company number 09583211, one of 60 building contractors in Boston. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £106K (+270.5%) on the year before, to £145K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £426K against £297K owed within a year: 1.4 times cover.
- 7 employees on average, up from 6 the year before.
- Balance sheets on record for 6 years, 2016 to 2021.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2021 | £145K | £426K | £297K | 7 | |
| 30 Jun 2020 | £39K | £201K | £200K | 6 | |
| 30 Jun 2019 | £47K | £220K | £191K | ||
| 30 Jun 2018 | £6,616 | £184K | £197K | ||
| 30 Jun 2017 | £33K | £214K | £205K | ||
| 30 Jun 2016 | £33K | £73K | £192K | £181K |
Public contracts won
S. T. Portess & Son Ltd has 2 public sector contract awards on record; the ones with their own published value total £93K, from 2019 to 2023. Source: Contracts Finder and Find a Tender award notices. For 1 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Lincolnshire County Council1 award
- Boston College1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Lincolnshire County Council | Disabled Facilities Grant (DFG) Framework | Ceiling, not shown | 7 Feb 2023 |
| Boston College | CA6051 - Refurbishment of the Former Restaurant, Kitchen and Retail Unit Spalding Campus | £93K | 25 Jun 2019 |
Where S. T. Portess & Son Ltd is registered
The registered office is in Boston (PE22), in the East Lindsey local authority area, East Midlands. Show PE22 7EU on a map.
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What happens if S. T. Portess & Son 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 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 09583211
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 May 2015 (11 years ago)
- Registered office
- Ravensfield West Fen Drainside, Frithville, Boston, Lincolnshire, PE22 7EU
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other construction installation (SIC 43290)
Other building completion and finishing (SIC 43390) - Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 26 May 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 Boston
Other active building contractors registered in Boston.
- Shane Stengel Construction Limited2005
- Sherridan Homes Limited2018
- Smart Move Design & Build Limited2004
- Smith Brickwork and Building Services Ltd2017
- Steve Good Builder Ltd2026
- Stockholm Investering Limited2024
- STV Construct Ltd2024
- Tfix Building Services Ltd2026
All building contractors in Boston · All trades in Boston · Builders across the UK
Frequently asked questions
When are S. T. Portess & Son Ltd's accounts due?
S. T. Portess & Son Ltd's next accounts are due at Companies House by 31 March 2027 (in 168 days), covering the period to 30 June 2026.
When is S. T. Portess & Son Ltd's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is S. T. Portess & Son Ltd still trading?
S. T. Portess & Son 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 S. T. Portess & Son Ltd do?
S. T. Portess & Son Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other construction installation (SIC 43290); Other building completion and finishing (SIC 43390).
How old is S. T. Portess & Son Ltd?
S. T. Portess & Son Ltd was incorporated on 9 May 2015, 11 years ago.
Has S. T. Portess & Son Ltd won public sector contracts?
Yes. S. T. Portess & Son Ltd has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £93K), most recently from Lincolnshire County Council.
What is the penalty if S. T. Portess & Son 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 S. T. Portess & Son 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.