- Companies
- Civil engineering
- Leigh on Sea
- Kontor Construction Limited
Kontor Construction Limited
- Company number
- 05489310
- Incorporated
- 23 Jun 200521 years trading
- Registered office
- Charter House, 103-105 Leigh Road, Leigh on Sea, Essex, SS9 1JL
- Nature of business
- Construction of other civil engineering projects n.e.c.
Kontor Construction Limited is a 21-year-old private limited company registered in Leigh on Sea, company number 05489310, one of 17 civil engineering contractors in Leigh on Sea. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £11K (+39.5%) on the year before, to -£17K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £4,314 against £23K owed within a year: 0.2 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | -£17K | £2,506 | £4,314 | £23K | 1 |
| 31 Mar 2025 | -£29K | £11K | £13K | £38K | 1 |
| 31 Mar 2024 | -£43K | £2,815 | £5,322 | £35K | 1 |
| 31 Mar 2023 | -£33K | £15K | £21K | £31K | 1 |
| 31 Mar 2022 | -£52K | £153 | £1,363 | £16K | 1 |
| 31 Mar 2021 | -£24K | £8,020 | £32K | £22K | 1 |
| 31 Mar 2020 | £11K | £9,068 | £32K | £32K | 1 |
| 31 Mar 2019 | £17K | £6,610 | £40K | £37K | 1 |
| 31 Mar 2018 | £891 | £18K | £20K | £25K | 1 |
| 31 Mar 2017 | -£1,898 | £12K | £20K | £29K | 1 |
Where Kontor Construction Limited is registered
The registered office is in Leigh on Sea (SS9), in the Southend-on-Sea local authority area, East of England. Show SS9 1JL on a map.
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- Britannia Roofing & Dampproofing LtdRoofers
- Elite Build & Co (Essex) LtdBuilders
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- MTS Piling LimitedSpecialist contractors
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Also registered at this address
24 other companies use the same registered office as Kontor Construction Limited.
- Angel Development Company LimitedBuilders
- Anglia Battery and Filter Co LimitedMotor traders
- Apron Design LimitedInstallers
- Atrios Designs LtdBuilders
- Bathroom and Plumbing Services LimitedPlumbers and heating engineers
- Brights Locksmiths LimitedRepair services
- Car Hospital (Southend) LimitedMechanics and garages
- Chalkwell Park Motors LimitedMotor traders
- Cheap Locksmith Essex LtdRepair services
- Countryside Style LimitedProperty developers
- D. Wilson Developments LimitedInstallers
- DM Electrical (Essex) LtdElectricians
- Elite Build & Co (Essex) LtdBuilders
- Floor Coverings Essex LtdFloor and wall tilers
- Greenbridge Services LimitedFinishing trades
- L T B Builders LtdSpecialist contractors
- Le Vack Estates LimitedBuilders
- Marshall Steel LtdSpecialist contractors
- N.R. Speakman LimitedFinishing trades
- Newbuild Decorating Contractors LimitedPainters and decorators
- Precision Paintworks LtdPainters and decorators
- Rowan Civil Engineers LimitedCivil engineering
- Structure Tec (UK) LimitedSpecialist contractors
- Thameside Fire Stopping LimitedInstallers
What happens if Kontor Construction Limited 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 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
- 05489310
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 June 2005 (21 years ago)
- Registered office
- Charter House, 103-105 Leigh Road, Leigh on Sea, Essex, SS9 1JL
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 23 June 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Leigh on Sea
Other active civil engineering contractors registered in Leigh on Sea.
- Luben Brickwork Limited1996
- MKJ Group Ltd2016
- Northaw Developments Limited2013
- Northaw Limited2013
- R&W Construction Group Ltd2023
- Rowan Civil Engineers Limited2005
- Safeleigh Limited2018
- Terry Brown & Sons Limited2019
All civil engineering contractors in Leigh on Sea · All trades in Leigh on Sea · Civil engineering across the UK
Frequently asked questions
When are Kontor Construction Limited's accounts due?
Kontor Construction Limited's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Kontor Construction Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Kontor Construction Limited still trading?
Kontor Construction Limited 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 Kontor Construction Limited do?
Kontor Construction Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Kontor Construction Limited?
Kontor Construction Limited was incorporated on 23 June 2005, 21 years ago.
What is the penalty if Kontor Construction Limited 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 Kontor Construction Limited 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.