- Companies
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- Letchworth
- Complete Building Services (Herts) Limited
Complete Building Services (Herts) Limited
- Company number
- 04840400
- Incorporated
- 21 Jul 200323 years trading
- Registered office
- Unit 15 Woodside Industrial Park, Works Road, Letchworth, Hertfordshire, SG6 1LA
- Nature of business
- Construction of domestic buildings
Complete Building Services (Herts) Limited is a 23-year-old private limited company registered in Letchworth, company number 04840400, one of the UK's building contractors. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £18K (+9.2%) on the year before, to -£176K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £509K against £699K owed within a year: 0.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | -£176K | £124 | £509K | £699K | 0 |
| 31 Dec 2024 | -£194K | £606 | £394K | £588K | 0 |
| 31 Dec 2023 | -£94K | £80 | £469K | £521K | 16 |
| 31 Dec 2022 | £2,077 | 15 | |||
| 31 Mar 2022 | -£191K | £88K | £449K | £508K | 17 |
| 30 Jun 2021 | -£229K | £12K | £452K | £520K | 20 |
| 31 Dec 2019 | £4,251 | £113K | £324K | £245K | |
| 31 Dec 2018 | £3,110 | £22K | £568K | £460K | |
| 31 Dec 2017 | £3,911 | £855 | £555K | £387K | |
| 31 Dec 2016 | £3,535 | £1,151 | £605K | £501K | 24 |
Public contracts won
Complete Building Services (Herts) Limited has 43 public sector contract awards on record; the ones with their own published value total £317K, from 2015 to 2025. Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- London Borough of Enfield43 awards
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| London Borough of Enfield | Void Rehabilitation | £95K | 15 Sep 2025 |
| London Borough of Enfield | 346 Hertford Road, Edmonton, N9 7HB | £5,671 | 28 Sep 2020 |
| London Borough of Enfield | 4 Crediton House, Exeter Road, EN3 7TR | £8,771 | 24 Sep 2020 |
| London Borough of Enfield | 51 Burgundy House, Bedale Road, EN2 0NZ | £6,089 | 9 Sep 2020 |
| London Borough of Enfield | 17 Hoe Lane, Enfield, EN3 5SD | £4,515 | 7 Sep 2020 |
| London Borough of Enfield | 58 Lawson Road, Enfield Middlesex EN3 5XJ | £4,071 | 26 Aug 2020 |
| London Borough of Enfield | 3 Lyndhurst Gardens, Enfield, EN1 2AT | £3,851 | 26 Aug 2020 |
| London Borough of Enfield | 144 Maltby Drive, Enfield, EN1 4EW | £2,931 | 12 Aug 2020 |
| London Borough of Enfield | 289 Silver Street, Edmonton, N18 1NQ | £4,194 | 12 Aug 2020 |
| London Borough of Enfield | 58 Roman Way, Enfield, EN1 1EH | £2,961 | 3 Aug 2020 |
Showing the 10 most recent of 43.
Where Complete Building Services (Herts) Limited is registered
The registered office is in Letchworth (SG6), in the North Hertfordshire local authority area, East of England. Show SG6 1LA on a map.
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Also registered at this address
1 other company uses the same registered office as Complete Building Services (Herts) Limited.
- Maxsmibury Properties LtdProperty developers
What happens if Complete Building Services (Herts) 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 04840400
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 July 2003 (23 years ago)
- Registered office
- Unit 15 Woodside Industrial Park, Works Road, Letchworth, Hertfordshire, SG6 1LA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 21 July 2026
- Charges (mortgages)
- 1 outstanding of 1 registered
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.
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Frequently asked questions
When are Complete Building Services (Herts) Limited's accounts due?
Complete Building Services (Herts) Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Complete Building Services (Herts) Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Complete Building Services (Herts) Limited still trading?
Complete Building Services (Herts) 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 Complete Building Services (Herts) Limited do?
Complete Building Services (Herts) Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Complete Building Services (Herts) Limited?
Complete Building Services (Herts) Limited was incorporated on 21 July 2003, 23 years ago.
Has Complete Building Services (Herts) Limited won public sector contracts?
Yes. Complete Building Services (Herts) Limited has 43 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £317K), most recently from London Borough of Enfield.
What is the penalty if Complete Building Services (Herts) 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 Complete Building Services (Herts) 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.