- Companies
- Specialist contractors
- Sidcup
- Realco Building Ltd
Realco Building Ltd
- Company number
- 12493807
- Incorporated
- 3 Mar 20206 years trading
- Registered office
- The Fold, 114 Station Road, Sidcup, Kent, DA15 7AE
- Nature of business
- Other specialised construction activities n.e.c.
Realco Building Ltd is a 6-year-old private limited company registered in Sidcup, company number 12493807, one of 92 specialist construction companies in Sidcup. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 down £37K (-351.8%) on the year before, to -£27K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £8,984 against £25K owed within a year: 0.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£27K | £1,733 | £8,984 | £25K | 2 |
| 31 Mar 2024 | £11K | £1,479 | £29K | £19K | 2 |
| 31 Mar 2023 | £42 | £8,789 | £21K | £57K | 2 |
| 31 Mar 2022 | £1,619 | £310 | £1,678 | £6,385 | 1 |
| 31 Mar 2021 | £4,228 | £17 | £3,220 | £902 | 1 |
Who runs and owns Realco Building Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| L*** F*** | Director | Mar 2020 |
Person with significant control
Where Realco Building Ltd is registered
The registered office is in Sidcup (DA15), in the Bexley local authority area, London. Show DA15 7AE on a map.
Other trade companies in DA15
- Petrichor Gardens LtdLandscapers and gardeners
- J Kennor Plumbing LimitedPlumbers and heating engineers
- Buckson Property Maintenance LtdElectricians
- MN Cooper UK LtdMotor traders
- Husband at Home LtdInstallers
- First Choice Cars LDN LtdMotor traders
- TSLM Electrical Contractors LtdElectricians
- Airhaus LtdPlumbers and heating engineers
Also registered at this address
15 other companies use the same registered office as Realco Building Ltd.
- 3 Investments 3 LimitedProperty developers
- Askona UK LtdFinishing trades
- Braidwood Building Services LimitedBuilders
- Christopher James LimitedBuilders
- Gee Whizz Cleaning LtdCleaning companies
- Greenaway Tree Services LtdLandscapers and gardeners
- HTR Building Services LimitedFinishing trades
- Isaac Automotives LimitedMotor traders
- Mso Painting and Decorating LimitedPainters and decorators
- Prelude Property Services LimitedBuilders
- Prestige Auto Service Centre LimitedMechanics and garages
- R Creed Building Contractors LimitedFinishing trades
- Sa Carwash and Valeting LimitedCleaning companies
- Sadler Roofing LimitedRoofers
- SKTK Developments LimitedProperty developers
What happens if Realco Building 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 12493807
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 March 2020 (6 years ago)
- Registered office
- The Fold, 114 Station Road, Sidcup, Kent, DA15 7AE
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 3 March 2026
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 Sidcup
Other active specialist construction companies registered in Sidcup.
- Rixon, Rixon and Murray Ltd2016
- RNC Plant Limited2019
- Shelbyline Ltd2016
- Skylog Services Ltd2021
- Square Side Limited2022
- Strauss Surveying Services Limited2018
- Sussex Highway Solutions Limited2026
- Taylex Power Limited2021
All specialist construction companies in Sidcup · All trades in Sidcup · Specialist contractors across the UK
Frequently asked questions
When are Realco Building Ltd's accounts due?
Realco Building Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Realco Building Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Realco Building Ltd still trading?
Realco Building 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 Realco Building Ltd do?
Realco Building Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Realco Building Ltd?
Realco Building Ltd was incorporated on 3 March 2020, 6 years ago.
Who runs Realco Building Ltd?
Realco Building Ltd has 1 active director, the longest-serving appointed in Mar 2020. Their names and service addresses are on the Companies House register.
Who owns Realco Building Ltd?
One person or company has significant control of Realco Building Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Realco Building 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 Realco Building 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.