- Company number
- 07590948
- Incorporated
- 5 Apr 201115 years trading
- Registered office
- C/O Ace Accountancy Ltd, 661 Uxbridge Road, Pinner, Middlesex, HA5 3LW
- Nature of business
- Construction of domestic buildings
Crystal Oak Constructions Ltd is a 15-year-old private limited company registered in Pinner, company number 07590948, one of 110 building contractors in Pinner. Its next accounts are due at Companies House on 29 December 2026, and the CT600 for the period to 29 March 2026 is due at HMRC on 29 March 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 down £15K (-24%) on the year before, to £48K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- 6 employees on average during the year.
- Balance sheets on record for 10 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £48K | 6 | |||
| 31 Mar 2024 | £63K | 6 | |||
| 29 Mar 2024 | £63K | £337K | £291K | 7 | |
| 31 Mar 2023 | £51K | 6 | |||
| 31 Mar 2022 | £58K | 3 | |||
| 31 Mar 2021 | £22K | 6 | |||
| 31 Mar 2020 | £3,721 | 5 | |||
| 30 Apr 2019 | £3,610 | £24K | £21K | ||
| 31 Mar 2019 | £112 | 5 | |||
| 30 Apr 2018 | £1,186 | £43K | £19K |
Where Crystal Oak Constructions Ltd is registered
The registered office is in Pinner (HA5), in the Harrow local authority area, London. Show HA5 3LW on a map.
Other trade companies in HA5
- Elisop LtdCivil engineering
- Kite Property Management LtdBuilders
- Olivares and Hayter LtdSpecialist contractors
- Shallons Electrical LtdElectricians
- Executive Maintenance LtdFinishing trades
- Truspan LtdBuilders
- Mak Electrical Services LtdBuilders
- Bori Scaffolding LtdScaffolders
Also registered at this address
8 other companies use the same registered office as Crystal Oak Constructions Ltd.
- Albaraka Cleaning LtdCleaning companies
- Circle K Investments LimitedProperty developers
- HNK LtdMechanics and garages
- I Dream Developments LtdProperty developers
- Kensingtons HC LtdMotor traders
- Kuanza Construction LtdProperty developers
- Lky Cars LtdMotor traders
- SS Building & Repairs LtdBuilders
What happens if Crystal Oak Constructions 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 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
- 07590948
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 April 2011 (15 years ago)
- Registered office
- C/O Ace Accountancy Ltd, 661 Uxbridge Road, Pinner, Middlesex, HA5 3LW
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 29 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 5 April 2026
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 Pinner
Other active building contractors registered in Pinner.
- D.T. Lofts Ltd2018
- De Mann Construction Limited2023
- Death Star Limited2016
- Devgun Estates Developments Ltd2025
- Dhanko Construction Ltd2019
- DKP Builders and Interiors Ltd2026
- DL Plus Limited2014
- DRH Construction Ltd2023
All building contractors in Pinner · All trades in Pinner · Builders across the UK
Frequently asked questions
When are Crystal Oak Constructions Ltd's accounts due?
Crystal Oak Constructions Ltd's next accounts are due at Companies House by 29 December 2026 (in 78 days), covering the period to 29 March 2026.
When is Crystal Oak Constructions Ltd's CT600 due?
The CT600 for the period to 29 March 2026 is due at HMRC by 29 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 December 2026.
Is Crystal Oak Constructions Ltd still trading?
Crystal Oak Constructions 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 Crystal Oak Constructions Ltd do?
Crystal Oak Constructions Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Crystal Oak Constructions Ltd?
Crystal Oak Constructions Ltd was incorporated on 5 April 2011, 15 years ago.
What is the penalty if Crystal Oak Constructions 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 Crystal Oak Constructions 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.