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- Build Up Ltd
Company profile · Builders
Build Up Ltd
Build Up Ltd is a newly incorporated private limited company registered in Welwyn Garden City, company number 16996936, one of 53 building contractors in Welwyn Garden City. Its next accounts are due at Companies House on 28 October 2027, and its first CT600 is due at HMRC on 27 January 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Build Up Ltd is registered
The registered office is in Welwyn Garden City (AL7), in the Welwyn Hatfield local authority area, East of England. Show AL7 2AG on a map.
Other trade companies in AL7
- Mechanicalwise LtdInstallers
- Azalea Services LimitedSpecialist contractors
- Malmech and Mannion LimitedMechanics and garages
- T&D Construction Group LtdFinishing trades
- Vertec Roofing and Building LtdRoofers
- Selectlane LtdMotor traders
- Af Pressure Washing LtdCleaning companies
- Jet Professional LtdCleaning companies
Also registered at this address
1 other company uses the same registered office as Build Up Ltd.
- Ronovax LtdProperty developers
What happens if Build Up 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 28 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Oct 2027 to 28 Nov 2027 | £150 |
| 1 to 3 months late | 29 Nov 2027 to 28 Jan 2028 | £375 |
| 3 to 6 months late | 29 Jan 2028 to 28 Apr 2028 | £750 |
| More than 6 months late | From 29 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16996936
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 2026
- Registered office
- 19 Herns Lane, Welwyn Garden City, AL7 2AG
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other letting and operating of own or leased real estate (SIC 68209) - Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
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 Welwyn Garden City
Other active building contractors registered in Welwyn Garden City.
- C.A.Head Ltd2025
- Chase (Cassio) Limited2015
- Chase (Rickmansworth) Limited2014
- Chase (WGC) Limited2013
- Chase New Homes (WGC) Limited2025
- Chase New Homes Limited2011
- CNH Trading Limited2013
- Complex Construction Ro Ltd2016
All building contractors in Welwyn Garden City · All trades in Welwyn Garden City · Builders across the UK
Frequently asked questions
When are Build Up Ltd's accounts due?
Build Up Ltd's next accounts are due at Companies House by 28 October 2027 (in 381 days), covering the period to 31 January 2027.
When is Build Up Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 27 January 2027, due by 27 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Build Up Ltd still trading?
Build Up 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 Build Up Ltd do?
Build Up Ltd is registered under Construction of domestic buildings (SIC 41202); Other letting and operating of own or leased real estate (SIC 68209).
How old is Build Up Ltd?
Build Up Ltd was incorporated on 28 January 2026, less than a year ago.
What is the penalty if Build Up 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 Build Up 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.