- Companies
- Specialist contractors
- Northampton
- Key Design & Construction Limited
Key Design & Construction Limited
- Company number
- 17013532
- Incorporated
- 4 Feb 2026
- Registered office
- 36 Crestwood Gardens, Northampton, NN3 8TZ
- Nature of business
- Other specialised construction activities n.e.c.
Key Design & Construction Limited is a newly incorporated private limited company registered in Northampton, company number 17013532, one of 258 specialist construction companies in Northampton. Its next accounts are due at Companies House on 4 November 2027, and its first CT600 is due at HMRC on 3 February 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 Key Design & Construction Limited is registered
The registered office is in Northampton (NN3), in the West Northamptonshire local authority area, East Midlands. Show NN3 8TZ on a map.
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What happens if Key Design & 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 4 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 5 Nov 2027 to 4 Dec 2027 | £150 |
| 1 to 3 months late | 5 Dec 2027 to 4 Feb 2028 | £375 |
| 3 to 6 months late | 5 Feb 2028 to 4 May 2028 | £750 |
| More than 6 months late | From 5 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 17013532
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 February 2026
- Registered office
- 36 Crestwood Gardens, Northampton, NN3 8TZ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 February (accounting reference date)
- Accounts type
- No accounts filed yet
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 Northampton
Other active specialist construction companies registered in Northampton.
- Kilsby Properties Ltd2016
- Kinsella Estates Limited2007
- Konstruct Limited2005
- L A Simblet Stonework Ltd2023
- L J Thomason Limited2005
- La Grasu Limited2023
- LC Stoneworks Ltd2026
- Lex Way Service Limited2015
All specialist construction companies in Northampton · All trades in Northampton · Specialist contractors across the UK
Frequently asked questions
When are Key Design & Construction Limited's accounts due?
Key Design & Construction Limited's next accounts are due at Companies House by 4 November 2027 (in 387 days), covering the period to 28 February 2027.
When is Key Design & Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 3 February 2027, due by 3 February 2028, and one for the period to 28 February 2027, due by 28 February 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Key Design & Construction Limited still trading?
Key Design & 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 Key Design & Construction Limited do?
Key Design & Construction Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Key Design & Construction Limited?
Key Design & Construction Limited was incorporated on 4 February 2026, less than a year ago.
What is the penalty if Key Design & 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 Key Design & 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.