- Companies
- Installers
- Sullivan Bros. (Construction) Limited
Sullivan Bros. (Construction) Limited
- Company number
- 03661864
- Incorporated
- 5 Nov 199827 years trading
- Registered office
- East Wing Goffs Oak House, Goffs Lane, Goffs Oak, Hertfordshire, EN7 5GE
- Nature of business
- Other construction installation
Sullivan Bros. (Construction) Limited is a 27-year-old private limited company registered in Goffs Oak, company number 03661864, one of the UK's installation companies (insulation, lifts, shutters and similar). Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 down £1.3M (-37.5%) on the year before, to £2.2M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £2.6M against £1.4M owed within a year: 1.9 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 |
|---|---|---|---|---|---|
| 30 Nov 2025 | £2.2M | £1M | £2.6M | £1.4M | 0 |
| 30 Nov 2024 | £3.6M | £2.1M | £7M | £4.4M | 0 |
| 30 Nov 2023 | £3.9M | £2.1M | £5M | £2M | 14 |
| 30 Nov 2022 | £3.4M | £2.1M | £4.7M | £1.4M | 10 |
| 30 Nov 2021 | £4.2M | £3M | £5.6M | £1.6M | 4 |
| 30 Nov 2020 | £3.4M | £2.2M | £4.2M | £834K | 4 |
| 30 Nov 2019 | £2.9M | £1.6M | £3.5M | £668K | 4 |
| 30 Nov 2018 | £2.4M | £1.9M | £3M | £617K | 4 |
| 30 Nov 2017 | £1.7M | £1.2M | £2.4M | £769K | |
| 30 Nov 2016 | £694K | £1.6M | £1.9M | £1.2M |
Who runs and owns Sullivan Bros. (Construction) Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (4)
| Name | Role | Appointed |
|---|---|---|
| D*** O*** | Director | Nov 1998 |
| J*** O*** | Director | Sep 2022 |
| M*** O*** | Director | Sep 2022 |
| K*** P*** | Director | Sep 2022 |
6 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| S*** N*** | Secretary | Nov 2000 | Sep 2016 |
| C*** O*** | Secretary | Nov 1998 | Nov 2000 |
| Semken Limited | Corporate Nominee Secretary | Nov 1998 | Nov 1998 |
| S*** N*** | Director | Sep 2000 | Sep 2016 |
| C*** O*** | Director | Nov 1998 | Nov 2000 |
| Lufmer Limited | Nominee director (company) | Nov 1998 | Nov 1998 |
Person with significant control
Charges (secured borrowing)
2 of 2 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| National Westminster Bank PLC | Outstanding | Oct 2023 |
| National Westminster Bank PLC | Outstanding | Aug 2023 |
Public contracts won
Sullivan Bros. (Construction) Limited has one public sector contract award on record; the ones with their own published value total £983K (2024). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| London Borough of Harrow | General Construction Multi Trade - GCMT - Capital projects (20% VAT) | £983K | 15 Mar 2024 |
Where Sullivan Bros. (Construction) Limited is registered
The registered office is in Goffs Oak (EN7), in the Broxbourne local authority area, East of England. Show EN7 5GE on a map.
Other trade companies in EN7
- Sparkle & Press LtdCleaning companies
- Sotira Maintenance LtdFinishing trades
- Sentry: Rapid Response LtdElectricians
- Tornado Group London LtdMotor traders
- Platinum Hive Decorating LimitedPlasterers
- Nexo Concept LtdProperty developers
- Outin Solutions LimitedFinishing trades
- Trulys Trees LimitedLandscapers and gardeners
Also registered at this address
7 other companies use the same registered office as Sullivan Bros. (Construction) Limited.
- All in Electrics LimitedElectricians
- JRH Autos and Bodyshop LimitedMechanics and garages
- Lycium LimitedProperty developers
- Neville Place LtdProperty developers
- Pippin Developments LimitedProperty developers
- Rainbow Place LimitedProperty developers
- S.D. Installations LimitedInstallers
What happens if Sullivan Bros. (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 31 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 03661864
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 November 1998 (27 years ago)
- Registered office
- East Wing Goffs Oak House, Goffs Lane, Goffs Oak, Hertfordshire, EN7 5GE
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 5 November 2025
- Charges (mortgages)
- 2 outstanding of 2 registered
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies
Other active installation companies (insulation, lifts, shutters and similar).
Frequently asked questions
When are Sullivan Bros. (Construction) Limited's accounts due?
Sullivan Bros. (Construction) Limited's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Sullivan Bros. (Construction) Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Sullivan Bros. (Construction) Limited still trading?
Sullivan Bros. (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 Sullivan Bros. (Construction) Limited do?
Sullivan Bros. (Construction) Limited is registered under Other construction installation (SIC 43290).
How old is Sullivan Bros. (Construction) Limited?
Sullivan Bros. (Construction) Limited was incorporated on 5 November 1998, 27 years ago.
Who runs Sullivan Bros. (Construction) Limited?
Sullivan Bros. (Construction) Limited has 4 active directors, the longest-serving appointed in Nov 1998. Their names and service addresses are on the Companies House register.
Who owns Sullivan Bros. (Construction) Limited?
One person or company has significant control of Sullivan Bros. (Construction) Limited: Navillus Holdings Limited (owns 75% or more of the shares).
Has Sullivan Bros. (Construction) Limited won public sector contracts?
Yes. Sullivan Bros. (Construction) Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £983K), most recently from London Borough of Harrow.
What is the penalty if Sullivan Bros. (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 Sullivan Bros. (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.