- Companies
- Specialist contractors
- Dorchester
- JSK Groundworks Ltd
JSK Groundworks Ltd
- Company number
- 11661456
- Incorporated
- 6 Nov 20187 years trading
- Registered office
- Unity Chambers, 34 High East Street, Dorchester, DT1 1HA
- Nature of business
- Other specialised construction activities n.e.c.
JSK Groundworks Ltd is a 7-year-old private limited company registered in Dorchester, company number 11661456, one of 40 specialist construction companies in Dorchester. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 up £8,253 (+16.6%) on the year before, to £58K.
- Net assets rose in 5 of 6 year-on-year comparisons on record.
- Current assets of £74K against £27K owed within a year: 2.7 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £58K | £40K | £74K | £27K | 1 |
| 30 Nov 2024 | £50K | £9,781 | £56K | £19K | 1 |
| 30 Nov 2023 | £43K | £17K | £54K | £23K | 1 |
| 30 Nov 2022 | £40K | £15K | £49K | £17K | 1 |
| 30 Nov 2021 | £49K | £11K | £55K | £14K | 1 |
| 30 Nov 2020 | £29K | £5,401 | £32K | £11K | 1 |
| 30 Nov 2019 | £22K | £2,755 | £31K | £18K | 1 |
Where JSK Groundworks Ltd is registered
The registered office is in Dorchester (DT1), in the Dorset local authority area, South West. Show DT1 1HA on a map.
Other trade companies in DT1
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- Coastal Crest Dorset Cleaning Company LimitedCleaning companies
- Hybrid Superstructures LtdBuilders
- Solo Construction & Development LimitedBuilders
- Guardian Home Improvements LimitedFinishing trades
- Dorset Cars LtdMotor traders
- Rebecca Scaffolding LtdScaffolders
- Fox Roofing & Leadworks LtdRoofers
Also registered at this address
24 other companies use the same registered office as JSK Groundworks Ltd.
- Benrage LimitedProperty developers
- Blandford Heating LimitedPlumbers and heating engineers
- Bournemouth House Purchase Company LimitedProperty developers
- Euro Car and Commercial LimitedMechanics and garages
- Fellbon Property Co LimitedProperty developers
- G & J A Chandler LimitedLandscapers and gardeners
- G K D Controls LimitedElectricians
- Gellert LimitedProperty developers
- Geoff Stone Property Maintenance LimitedInstallers
- Infleet LimitedMechanics and garages
- Klaus Boden LimitedProperty developers
- M & D Gas Services LimitedPlumbers and heating engineers
- Malcolm Goodyear Carpentry & Building Services LimitedInstallers
- Oil Heating Services LimitedPlumbers and heating engineers
- P. Kerley Contractor LtdLandscapers and gardeners
- Parham Development LimitedProperty developers
- Parham Investment LimitedProperty developers
- Parker Homes (UK) LimitedProperty developers
- PLB Basford Carpentry LimitedFinishing trades
- Reeve (South) LtdProperty developers
- Three Towns Cleaning LimitedCleaning companies
- Timrick LimitedLandscapers and gardeners
- Tooms and Associates LimitedMechanics and garages
- Total Window Repairs LimitedGlaziers
What happens if JSK Groundworks 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 11661456
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 November 2018 (7 years ago)
- Registered office
- Unity Chambers, 34 High East Street, Dorchester, DT1 1HA
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 5 November 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 Dorchester
Other active specialist construction companies registered in Dorchester.
- L Construction Ltd2007
- M Walker Building Services Ltd2025
- Maintain My Home Limited2013
- Maintenance Managed Limited2024
- MBS Dorchester Limited2015
- Michael's Garden Offices Ltd2026
- Mintern Fencing and Sheds Ltd2014
- Mooney Plant Hire Limited2017
All specialist construction companies in Dorchester · All trades in Dorchester · Specialist contractors across the UK
Frequently asked questions
When are JSK Groundworks Ltd's accounts due?
JSK Groundworks Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is JSK Groundworks Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is JSK Groundworks Ltd still trading?
JSK Groundworks 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 JSK Groundworks Ltd do?
JSK Groundworks Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is JSK Groundworks Ltd?
JSK Groundworks Ltd was incorporated on 6 November 2018, 7 years ago.
What is the penalty if JSK Groundworks 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 JSK Groundworks 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.