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- Chalkstone Projects Ltd
Company profile · Builders
Chalkstone Projects Ltd
Chalkstone Projects Ltd is a newly incorporated private limited company registered in Portsmouth, company number 17120053, one of 175 building contractors in Portsmouth. Its next accounts are due at Companies House on 27 December 2027, and its first CT600 is due at HMRC on 26 March 2028.
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 Chalkstone Projects Ltd is registered
The registered office is in Portsmouth (PO1), in the Portsmouth local authority area, South East. Show PO1 3EY on a map.
Other trade companies in PO1
- Design 1805 Southern LtdJoiners and carpenters
- Portsmouth Roofing LtdRoofers
- Peterborough Mews (London) LimitedProperty developers
- Doxa Facility Group LtdCleaning companies
- Crestpoint Cleaning & Facilities LtdCleaning companies
- Dark Rose Cleaning Co LtdCleaning companies
- PDS Garage Services LtdMechanics and garages
- HDF Roofing LtdRoofers
Shared registered office
42 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 Chalkstone 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 27 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Dec 2027 to 27 Jan 2028 | £150 |
| 1 to 3 months late | 28 Jan 2028 to 27 Mar 2028 | £375 |
| 3 to 6 months late | 28 Mar 2028 to 27 Jun 2028 | £750 |
| More than 6 months late | From 28 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 17120053
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 March 2026
- Registered office
- Unit 6 ST Georges Business Centre, ST Georges Business Square, Portsmouth, PO1 3EY
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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 Portsmouth
Other active building contractors registered in Portsmouth.
- Clameg Design and Build Ltd2010
- Cleall Builders Limited2003
- Club Commerce Architecture Ltd2020
- Complete Facades Installations Limited2020
- Complete Facades Limited2010
- Constructfm Ltd2023
- Cornerstone Property Construction Ltd2022
- Coursebycourse Brickwork Ltd2019
All building contractors in Portsmouth · All trades in Portsmouth · Builders across the UK
Frequently asked questions
When are Chalkstone Projects Ltd's accounts due?
Chalkstone Projects Ltd's next accounts are due at Companies House by 27 December 2027 (in 441 days), covering the period to 31 March 2027.
When is Chalkstone 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 26 March 2027, due by 26 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Chalkstone Projects Ltd still trading?
Chalkstone Projects 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 Chalkstone Projects Ltd do?
Chalkstone Projects Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Chalkstone Projects Ltd?
Chalkstone Projects Ltd was incorporated on 27 March 2026, less than a year ago.
What is the penalty if Chalkstone 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 Chalkstone Projects 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.