- Companies
- Specialist contractors
- Portsmouth
- Coastal Building Solutions Ltd
Coastal Building Solutions Ltd
- Company number
- 16685367
- Incorporated
- 1 Sep 20251 year trading
- Registered office
- 94 Station Road, Drayton, Portsmouth, PO6 1PL
- Nature of business
- Other specialised construction activities n.e.c.
Coastal Building Solutions Ltd is a 1-year-old private limited company registered in Portsmouth, company number 16685367, one of 193 specialist construction companies in Portsmouth. Its next accounts are due at Companies House on 1 June 2027, and its first CT600 is due at HMRC on 31 August 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 Coastal Building Solutions Ltd is registered
The registered office is in Portsmouth (PO6), in the Portsmouth local authority area, South East. Show PO6 1PL on a map.
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What happens if Coastal Building Solutions 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 1 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Jun 2027 to 1 Jul 2027 | £150 |
| 1 to 3 months late | 2 Jul 2027 to 1 Sep 2027 | £375 |
| 3 to 6 months late | 2 Sep 2027 to 1 Dec 2027 | £750 |
| More than 6 months late | From 2 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16685367
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 September 2025 (1 year ago)
- Registered office
- 94 Station Road, Drayton, Portsmouth, PO6 1PL
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 10 August 2026
- Previous names
- Costal Building Solutions Ltd (until 8 Sep 2025)
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Portsmouth
Other active specialist construction companies registered in Portsmouth.
- Complete Formwork Solutions Ltd2011
- Custom Pools & Developments Limited2019
- D & L Builders Ltd2017
- D C Groundworks Limited2013
- D M Building & Restoration Ltd2012
- D-Luxe Fitouts Ltd2025
- D.W.M Interiors Ltd2021
- Daligar Limited2015
All specialist construction companies in Portsmouth · All trades in Portsmouth · Specialist contractors across the UK
Frequently asked questions
When are Coastal Building Solutions Ltd's accounts due?
Coastal Building Solutions Ltd's next accounts are due at Companies House by 1 June 2027 (in 231 days), covering the period to 30 September 2026.
When is Coastal Building Solutions 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 31 August 2026, due by 31 August 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Coastal Building Solutions Ltd still trading?
Coastal Building Solutions 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 Coastal Building Solutions Ltd do?
Coastal Building Solutions Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Coastal Building Solutions Ltd?
Coastal Building Solutions Ltd was incorporated on 1 September 2025, 1 year ago.
What is the penalty if Coastal Building Solutions 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 Coastal Building Solutions 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.