- Companies
- Property developers
- Grimsby
- Mack Construction and Developments Ltd
Mack Construction and Developments Ltd
- Company number
- 10707424
- Incorporated
- 4 Apr 20179 years trading
- Registered office
- PM Windows, Holme Street, Grimsby, North East Lincs, DN32 9AD
- Nature of business
- Development of building projects; Construction of domestic buildings
Mack Construction and Developments Ltd is a 9-year-old private limited company registered in Grimsby, company number 10707424, one of 113 property development companies in Grimsby. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £110K (+37.6%) on the year before, to £402K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £660K against £257K owed within a year: 2.6 times cover.
- 3 employees on average, up from -2 the year before.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | £402K | £660K | £257K | 3 | |
| 31 Aug 2024 | £292K | £586K | £292K | -2 | |
| 30 Apr 2023 | £104K | £324K | £218K | -2 | |
| 30 Apr 2022 | £104K | £372K | £172K | -2 | |
| 30 Apr 2021 | £2 | £4,086 | £374K | £374K | 2 |
| 30 Apr 2020 | £2 | £224 | £225K | £225K | 2 |
| 30 Apr 2019 | £2 | £0 | £74K | £74K | 0 |
Where Mack Construction and Developments Ltd is registered
The registered office is in Grimsby (DN32), in the North East Lincolnshire local authority area, Yorkshire and The Humber. Show DN32 9AD on a map.
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What happens if Mack Construction and Developments 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 10707424
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 April 2017 (9 years ago)
- Registered office
- PM Windows, Holme Street, Grimsby, North East Lincs, DN32 9AD
- Nature of business
- Development of building projects (SIC 41100)
Construction of domestic buildings (SIC 41202) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 3 April 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 Grimsby
Other active property development companies registered in Grimsby.
- Mainserve Contracts Limited2003
- MC Real Estate Group Ltd2026
- Michael Bass Grimsby Limited2002
- N Mawer Buildings Ltd2021
- Newchase Limited1986
- Newman Surveying and Development Ltd2024
- NM Property Developers Ltd2017
- Noton Estates Limited2025
All property development companies in Grimsby · All trades in Grimsby · Property developers across the UK
Frequently asked questions
When are Mack Construction and Developments Ltd's accounts due?
Mack Construction and Developments Ltd's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Mack Construction and Developments Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Mack Construction and Developments Ltd still trading?
Mack Construction and Developments 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 Mack Construction and Developments Ltd do?
Mack Construction and Developments Ltd is registered under Development of building projects (SIC 41100); Construction of domestic buildings (SIC 41202).
How old is Mack Construction and Developments Ltd?
Mack Construction and Developments Ltd was incorporated on 4 April 2017, 9 years ago.
What is the penalty if Mack Construction and Developments 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 Mack Construction and Developments 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.