- Companies
- Property developers
- Watford
- Sullivan Brothers Construction Ltd
Sullivan Brothers Construction Ltd
- Company number
- 10487432
- Incorporated
- 18 Nov 20169 years trading
- Registered office
- 14 Nascot Road, Watford, WD17 4YE
- Nature of business
- Development of building projects
Sullivan Brothers Construction Ltd is a 9-year-old private limited company registered in Watford, company number 10487432, one of 277 property development companies in Watford. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 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 £61K (+26.7%) on the year before, to £290K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £127K against £437K owed within a year: 0.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £290K | £127K | £437K | 0 | |
| 31 Oct 2024 | £229K | £152K | £524K | 0 | |
| 31 Oct 2023 | -£33K | £33K | 0 | ||
| 31 Oct 2022 | -£33K | 0 | |||
| 31 Oct 2021 | -£33K | £33K | 0 | ||
| 31 Oct 2020 | -£33K | £0 | £33K | 0 | |
| 31 Oct 2019 | £33K | -£1,075 | £0 | ||
| 31 Oct 2018 | -£414 | -£22K | £4,967 | ||
| 31 Oct 2017 | £325 | £35K | £29K |
Where Sullivan Brothers Construction Ltd is registered
The registered office is in Watford (WD17), in the Watford local authority area, East of England. Show WD17 4YE on a map.
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- A1 Motors Watford LtdMechanics and garages
- Kola Brickwork LtdInstallers
- Appleby's Mechanical Services LtdPlumbers and heating engineers
- Kpu Services LtdProperty developers
- Highmark Investments LtdBuilders
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Also registered at this address
1 other company uses the same registered office as Sullivan Brothers Construction Ltd.
- Fohntech UK LimitedProperty developers
What happens if Sullivan Brothers Construction 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 10487432
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 November 2016 (9 years ago)
- Registered office
- 14 Nascot Road, Watford, WD17 4YE
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 22 February 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 Watford
Other active property development companies registered in Watford.
- Sunsan Estates Limited2019
- Svart Home Ltd2020
- SW Site Management Services Ltd2025
- Swancrest Properties Limited2024
- Synergy Eco Ltd2021
- T.I.M.E. Construct Limited2021
- Tay Developments (Wimbledon) Ltd.2023
- Taylors Property Services Limited1993
All property development companies in Watford · All trades in Watford · Property developers across the UK
Frequently asked questions
When are Sullivan Brothers Construction Ltd's accounts due?
Sullivan Brothers Construction Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Sullivan Brothers Construction Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Sullivan Brothers Construction Ltd still trading?
Sullivan Brothers Construction 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 Sullivan Brothers Construction Ltd do?
Sullivan Brothers Construction Ltd is registered under Development of building projects (SIC 41100).
How old is Sullivan Brothers Construction Ltd?
Sullivan Brothers Construction Ltd was incorporated on 18 November 2016, 9 years ago.
What is the penalty if Sullivan Brothers Construction 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 Sullivan Brothers Construction 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.