- Companies
- Property developers
- Mansfield
- Keystone Allied Projects Ltd
Keystone Allied Projects Ltd
- Company number
- 16588838
- Incorporated
- 17 Jul 20251 year trading
- Registered office
- 5 Harrison Road, Mansfield, NG18 5RG
- Nature of business
- Development of building projects; Construction of domestic buildings; Other specialised construction activities n.e.c.; Other letting and operating of own or leased real estate
Keystone Allied Projects Ltd is a 1-year-old private limited company registered in Mansfield, company number 16588838, one of 121 property development companies in Mansfield. Its next accounts are due at Companies House on 17 April 2027, and its first CT600 is due at HMRC on 16 July 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Keystone Allied Projects Ltd is registered
The registered office is in Mansfield (NG18), in the Mansfield local authority area, East Midlands. Show NG18 5RG on a map.
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What happens if Keystone Allied Projects 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 17 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Apr 2027 to 17 May 2027 | £150 |
| 1 to 3 months late | 18 May 2027 to 17 Jul 2027 | £375 |
| 3 to 6 months late | 18 Jul 2027 to 17 Oct 2027 | £750 |
| More than 6 months late | From 18 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16588838
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 July 2025 (1 year ago)
- Registered office
- 5 Harrison Road, Mansfield, NG18 5RG
- Nature of business
- Development of building projects (SIC 41100)
Construction of domestic buildings (SIC 41202)
Other specialised construction activities n.e.c. (SIC 43999)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
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 Mansfield
Other active property development companies registered in Mansfield.
- Kingsley PD Limited2018
- KJR Interiors Ltd2025
- KK Cleaning & Property Maintenance Ltd2026
- Knight Berry Ltd2016
- Lawn Hills Developments Limited2025
- LBC Projects Ltd2014
- Lilywood Developments Limited2025
- Lindley Street Developments Ltd2019
All property development companies in Mansfield · All trades in Mansfield · Property developers across the UK
Frequently asked questions
When are Keystone Allied Projects Ltd's accounts due?
Keystone Allied Projects Ltd's next accounts are due at Companies House by 17 April 2027 (in 186 days), covering the period to 31 July 2026.
When is Keystone Allied Projects Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 16 July 2026, due by 16 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Keystone Allied Projects Ltd still trading?
Keystone Allied Projects Ltd 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 Keystone Allied Projects Ltd do?
Keystone Allied Projects Ltd is registered under Development of building projects (SIC 41100); Construction of domestic buildings (SIC 41202); Other specialised construction activities n.e.c. (SIC 43999); Other letting and operating of own or leased real estate (SIC 68209).
How old is Keystone Allied Projects Ltd?
Keystone Allied Projects Ltd was incorporated on 17 July 2025, 1 year ago.
What is the penalty if Keystone Allied Projects 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 Keystone Allied Projects Ltd 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.