- Company number
- 09230561
- Incorporated
- 23 Sep 201412 years trading
- Registered office
- 122 Whinbush Road, Hitchin, SG5 1PN
- Nature of business
- Construction of domestic buildings
Sul Design & Build Limited is a 12-year-old private limited company registered in Hitchin, company number 09230561, one of 92 building contractors in Hitchin. Its next accounts are due at Companies House on 28 July 2027, and the CT600 for the period to 28 October 2026 is due at HMRC on 28 October 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 £56K (+2.5%) on the year before, to -£2.2M.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £17K against £2.2M owed within a year: 0.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 Oct 2025 | -£2.2M | £2,226 | £17K | £2.2M | 0 |
| 31 Oct 2024 | -£2.3M | £6,266 | £207K | £2.5M | 0 |
| 31 Oct 2023 | £105K | £5,404 | £4.1M | £4M | 5 |
| 31 Oct 2022 | £162K | £100K | £2.5M | £2.3M | 5 |
| 31 Oct 2021 | £241K | £30K | £1.4M | £1.1M | 4 |
| 31 Oct 2020 | £201K | £23K | £1.3M | £1.1M | 6 |
| 31 Oct 2019 | £102K | £13K | £1.1M | £958K | 2 |
| 31 Oct 2018 | £103K | £11K | £117K | £14K | |
| 31 Oct 2017 | £103K | £15K | £120K | £17K | |
| 31 Oct 2016 | £146K | £120K | £237K | £91K |
Where Sul Design & Build Limited is registered
The registered office is in Hitchin (SG5), in the North Hertfordshire local authority area, East of England. Show SG5 1PN on a map.
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- Woods Property Solutions LtdBuilders
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- S. Harris Builders LimitedFinishing trades
- Stotfold Property Services LtdBuilders
- SGB Modern Access LtdScaffolders
- Top Class Roofing & Renovations LimitedRoofers
Shared registered office
32 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 Sul Design & Build 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 28 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Jul 2027 to 28 Aug 2027 | £150 |
| 1 to 3 months late | 29 Aug 2027 to 28 Oct 2027 | £375 |
| 3 to 6 months late | 29 Oct 2027 to 28 Jan 2028 | £750 |
| More than 6 months late | From 29 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Oct 2027 | £200 |
| 3 months late | 28 Jan 2028 | another £200 |
| 6 months late | 28 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Oct 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
- 09230561
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 September 2014 (12 years ago)
- Registered office
- 122 Whinbush Road, Hitchin, SG5 1PN
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 28 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 18 September 2025
- Charges (mortgages)
- 0 outstanding of 1 registered
- Previous names
- Student Urban Living Durham Limited (until 27 Aug 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 Hitchin
Other active building contractors registered in Hitchin.
- Summit Building Ltd2023
- Surebuild Homes Ltd2019
- Switching on the Light Ltd2019
- Synergy Construction Limited2021
- Tailored Floors Specialists Ltd2025
- Taylor Barnett Limited2026
- Thomas Carter Limited2006
- Titan Carpentry Services Limited2026
All building contractors in Hitchin · All trades in Hitchin · Builders across the UK
Frequently asked questions
When are Sul Design & Build Limited's accounts due?
Sul Design & Build Limited's next accounts are due at Companies House by 28 July 2027 (in 288 days), covering the period to 28 October 2026.
When is Sul Design & Build Limited's CT600 due?
The CT600 for the period to 28 October 2026 is due at HMRC by 28 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 29 July 2027.
Is Sul Design & Build Limited still trading?
Sul Design & Build Limited is listed as active on the Companies House register (checked 13 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 Sul Design & Build Limited do?
Sul Design & Build Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Sul Design & Build Limited?
Sul Design & Build Limited was incorporated on 23 September 2014, 12 years ago.
What is the penalty if Sul Design & Build 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 Sul Design & Build Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.