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- Seima Construction Limited
Company profile · Property developers
Seima Construction Limited
Seima Construction Limited is a 26-year-old private limited company registered in Hitchin, company number 03890268, one of 141 property development companies in Hitchin. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 2027.
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 December 2025, as filed at Companies House.
Seima Construction Limited 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 £14K (+16.3%) on the year before, to £99K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £196K against £157K owed within a year: 1.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 8 years, 2014 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £99K | £196K | £157K | 0 | |
| 31 Dec 2024 | £85K | £126K | £92K | 0 | |
| 31 Dec 2023 | £42K | £432K | £405K | 2 | |
| 31 Dec 2022 | £47K | £381K | £342K | ||
| 31 Dec 2021 | £66K | £1,600 | £247K | £215K | 2 |
| 31 Dec 2020 | £100K | £8,036 | £266K | £221K | 2 |
| 31 Dec 2015 | £103K | £572K | £518K | ||
| 31 Dec 2014 | £103K | £1.3M | £1.2M |
Where Seima Construction Limited is registered
The registered office is in Hitchin (SG5), in the Central Bedfordshire local authority area, East of England. Show SG5 3PF on a map.
Other trade companies in SG5
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- The Peugeot and Renault Man LtdMechanics and garages
- Woods Property Solutions LtdBuilders
- PM Contractors LtdBuilders
- S. Harris Builders LimitedFinishing trades
- Stotfold Property Services LtdBuilders
- SGB Modern Access LtdScaffolders
- Top Class Roofing & Renovations LimitedRoofers
Also registered at this address
2 other companies use the same registered office as Seima Construction Limited.
- CS3C Cleaning LtdCleaning companies
- Rustys American Imports LimitedMotor traders
What happens if Seima Construction 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 03890268
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 December 1999 (26 years ago)
- Registered office
- The Straw Barn Meppershall Road, Shillington, Hitchin, SG5 3PF
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 25 November 2025
- Charges (mortgages)
- 0 outstanding of 14 registered
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 Hitchin
Other active property development companies registered in Hitchin.
- Sherdel Thirnbeck Acquisitions Limited2013
- Simply Clophill Limited2021
- Skyview Property & Developments Ltd2025
- Smart Urban Living Bristol (One) Limited2023
- Smart Urban Living Bristol (Two) Limited2023
- Smart Urban Living Streatham Limited2025
- Spandrel Brickwork Ltd2018
- Stackallen Properties Limited2010
All property development companies in Hitchin · All trades in Hitchin · Property developers across the UK
Frequently asked questions
When are Seima Construction Limited's accounts due?
Seima Construction Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Seima Construction Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Seima Construction Limited still trading?
Seima Construction 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 Seima Construction Limited do?
Seima Construction Limited is registered under Development of building projects (SIC 41100).
How old is Seima Construction Limited?
Seima Construction Limited was incorporated on 8 December 1999, 26 years ago.
What is the penalty if Seima Construction 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 Seima Construction 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.