---
title: "Milldam House Boiler Replacement"
ocid: "ocds-h6vhtk-05f5b5"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f5b5"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f5b5.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05f5b5.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "PORTSMOUTH CITY COUNCIL"
published: "2025-12-15"
---

# Milldam House Boiler Replacement

Buyer: PORTSMOUTH CITY COUNCIL  
Current stage: Award  
OCID: ocds-h6vhtk-05f5b5

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f5b5)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05f5b5.json)

## Summary

The Milldam House Boiler Replacement contract, managed by Portsmouth City Council, involves replacing existing gas-fired boilers with a new, higher-efficiency solution at the property. The industry category for this procurement is primarily works related to heating installations. The procurement process has reached the award stage and the contract commenced on 29th July 2025, with a projected completion date of 17th October 2025. Situated in the South East England region, this initiative falls under the legal framework of the UK Public Contracting Act 2023. The procurement method categorised as "Below threshold - unknown" indicates a potentially flexible tendering approach.

The tender provides a significant opportunity for businesses specialising in gas appliances, boiler installations, and heating works to enhance their portfolios and reputation. Large-scale enterprises similar to SIMER ENVIRONMENTAL SERVICES LTD, the awarded supplier, are particularly well-placed to compete for such contracts due to their resource capabilities and operational scale. Companies operating in this sector can leverage this contract to demonstrate expertise in energy efficiency solutions, thereby capitalising on the demand for improved infrastructure within the public authority sector. With renewal options extending its potential scope, this contract offers sustained growth prospects for adept contractors in energy and environment services.

## Notice

Replacement of the existing gas fired boilers with new higher efficiency gas fired boilers at the property.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/082895-2025 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Not Specified |
| Procurement method details | Below threshold - unknown |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 15 Dec 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 26 May 2025 |
| Contract period | 28 Jul 2025 - 17 Oct 2025 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | £84,853 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | PORTSMOUTH CITY COUNCIL |
| Locality | PORTSMOUTH |
| Post town | Portsmouth |
| Postcode | PO1 2AL |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ3 Hampshire and Isle of Wight |
| ITL 3 | TLJ31 Portsmouth |
| Local authority | Portsmouth |
| Electoral ward | Charles Dickens |
| Westminster constituency | Portsmouth South |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | SIMER ENVIRONMENTAL SERVICES |

## CPV Codes

### Divisions

- 39 - Furniture (incl. office furniture), furnishings, domestic appliances (excl. lighting) and cleaning products
- 42 - Industrial machinery
- 45 - Construction work

### Codes

- 39721410 - Gas appliances
- 42160000 - Boiler installations
- 45232141 - Heating works

## Release History

- 15 Dec 2025 at 13:27 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/082895-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/082895-2025
  15th December 2025 - Contract details notice on Find a Tender

## Notice URLs

- http://simer-environmental.co.uk/
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05f5b5. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05f5b5.json.