- Companies
- Property developers
- Northampton
- Sonofoss Design System Limited
Sonofoss Design System Limited
- Company number
- 02030172
- Incorporated
- 20 Jun 198640 years trading
- Registered office
- 106 Greenview Drive, Links View, Northampton, NN2 7LQ
- Nature of business
- Development of building projects
Sonofoss Design System Limited is a 40-year-old private limited company registered in Northampton, company number 02030172, one of 390 property development companies in Northampton. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £5,508 (+1.9%) on the year before, to £290K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £278K against £22K owed within a year: more than 10 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £290K | £278K | £22K | 1 | |
| 31 Mar 2024 | £284K | £273K | £22K | 2 | |
| 31 Mar 2023 | £277K | £231K | £21K | 2 | |
| 31 Mar 2022 | £278K | £237K | £25K | 2 | |
| 31 Mar 2021 | £284K | £246K | £28K | 2 | |
| 31 Mar 2020 | £287K | £65K | £33K | 2 | |
| 31 Mar 2019 | £280K | £61K | £36K | ||
| 31 Mar 2018 | £270K | £310K | £40K | ||
| 31 Mar 2017 | £278K | £320K | £42K | ||
| 31 Mar 2016 | £276K | £22K | £304K | £29K |
Where Sonofoss Design System Limited is registered
The registered office is in Northampton (NN2), in the West Northamptonshire local authority area, East Midlands. Show NN2 7LQ on a map.
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- S & M Roofing and Cladding LtdInstallers
- Gke & Rail Construction LtdCivil engineering
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What happens if Sonofoss Design System 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 02030172
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 1986 (40 years ago)
- Registered office
- 106 Greenview Drive, Links View, Northampton, NN2 7LQ
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 24 August 2026
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 Northampton
Other active property development companies registered in Northampton.
- Space 24 Ltd2024
- SPB Property Solutions Ltd2026
- Spencer House Properties Limited1975
- Spencer Tracy Limited2002
- SPS Plastering Contractors Limited2022
- SRH Stonemasonry Ltd2026
- SSF Design & Build Ltd2021
- Starla Developments Ltd2020
All property development companies in Northampton · All trades in Northampton · Property developers across the UK
Frequently asked questions
When are Sonofoss Design System Limited's accounts due?
Sonofoss Design System Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Sonofoss Design System Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Sonofoss Design System Limited still trading?
Sonofoss Design System 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 Sonofoss Design System Limited do?
Sonofoss Design System Limited is registered under Development of building projects (SIC 41100).
How old is Sonofoss Design System Limited?
Sonofoss Design System Limited was incorporated on 20 June 1986, 40 years ago.
What is the penalty if Sonofoss Design System 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 Sonofoss Design System 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.