Company profile · Builders
Castle Well Developments Ltd
Castle Well Developments Ltd is a 12-year-old private limited company registered in Lowestoft, company number 09117855, one of 60 building contractors in Lowestoft. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Castle Well Developments Ltd over the years
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 £21K (-9.5%) on the year before, to -£241K.
- Net assets rose in 2 of 9 year-on-year comparisons on record.
- Current assets of £436K against £675K owed within a year: 0.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2015 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£241K | £436K | £436K | £675K | 0 |
| 31 Mar 2024 | -£220K | £6,968 | £1.2M | £1.4M | 0 |
| 31 Mar 2023 | £18K | £1.1M | £2.1M | £2M | 0 |
| 31 Dec 2021 | £8,905 | £112K | £2.9M | £2.9M | 0 |
| 31 Dec 2020 | £43K | £12K | £1.4M | £1.3M | 0 |
| 31 Dec 2019 | £189K | £257K | £1.7M | £1.5M | |
| 31 Dec 2018 | £312K | £444K | £3.4M | £3M | |
| 31 Dec 2017 | £435K | £239K | £3.7M | £3.2M | |
| 31 Dec 2016 | £571K | £2.2M | £2.2M | ||
| 31 Dec 2015 | -£4,874 | £1.6M | £1.6M |
Where Castle Well Developments Ltd is registered
The registered office is in Lowestoft (NR32), in the East Suffolk local authority area, East of England. Show NR32 3AL on a map.
Other trade companies in NR32
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- SLC Plumbing LtdPlumbers and heating engineers
- Yare Developments LimitedProperty developers
- RLB Cleaning and Maintenance LtdFacilities management
- Tech Sparrow LtdMachinery repair and installation
- A J Knights LtdProperty developers
- Cool Beans Air LtdPlumbers and heating engineers
- HR Electrical (East Anglia) LtdElectricians
Also registered at this address
1 other company uses the same registered office as Castle Well Developments Ltd.
- Tredwell Developments LimitedBuilders
What happens if Castle Well 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 09117855
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 July 2014 (12 years ago)
- Registered office
- Tredwell Developments Ltd, Mobbs Way, Lowestoft, Suffolk, NR32 3AL
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 July 2026
- Charges (mortgages)
- 1 outstanding of 6 registered
- Previous names
- Homeland Residential Ltd (until 18 Sep 2014)
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 Lowestoft
Other active building contractors registered in Lowestoft.
- CJW Building & Plumbing Services Ltd2010
- Constructivate Ltd2024
- Creative Construction Ea Limited2023
- Daniel Jessup Brickwork Limited2026
- DCH Builders Limited2002
- DKP Group Ltd2019
- DMG Resolution Ltd2026
- Executive Real Estate Limited2018
All building contractors in Lowestoft · All trades in Lowestoft · Builders across the UK
Frequently asked questions
When are Castle Well Developments Ltd's accounts due?
Castle Well Developments Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Castle Well Developments Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Castle Well Developments Ltd still trading?
Castle Well 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 Castle Well Developments Ltd do?
Castle Well Developments Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Castle Well Developments Ltd?
Castle Well Developments Ltd was incorporated on 7 July 2014, 12 years ago.
What is the penalty if Castle Well 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 Castle Well 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.