Property assets

Paris Habitat

Project design, construction supervision and engineering 09/11/2021 Paris #SERMET
Prime contractor for the renovation work on the heating and domestic hot water plant and equipment with underground systems and boosters, under a 4-year master agreement.

Type of assignment

The assignment consists in providing the following services:


Establishing and monitoring works contracts

  • Analysing the project’s requirements
  • Feasibility study and preliminary design study for the renovation or conversion of the technical facilities: on-site inspection and surveys, analysis of existing documents (as-built records, consumption records, etc.), analysis of thermal needs and comparison with installed capacity, recommended improvements including a total-cost study of the solutions
  • Determining the estimated cost of the work
  • Drawing up tendering documents (special technical specifications, breakdown of the all-inclusive price, graphical appendices)
  • Examining the tenders and drafting the review report
  • Administrative procedures prior to the work (notice of planned works/notice of commencement of works, notifications, etc.)
  • Monitoring and overseeing execution and compliance of the work
  • Arranging and hosting periodic site meetings and drafting the minutes thereof
  • Monitoring the administrative follow-up of the works (joint inspection, subcontracting approvals, etc.)

Project leader

About the subsidiary involved in the project

A few figures


Duration of the project

Description of the work

Focus on certain assignments in 2020

Renovating the Belleville site:

  • Renovating the boiler house (3 x 850 kW boilers) and substations, including installing a primary DHW storage system combined with a depletion link to the heating + installing a separating exchanger for a substation powering a 20-floor tower block
  • Approving the functional analysis of centralized control with a view to optimizing performance
  • Cost of the work: €500,000 excl. VAT
  • Length of the work: 5 months


Renovation of the Trolley de Prévaux site:

  • Renovation of the boiler house (2 x 285 kW boilers with 3 tapping points) and the substations, including installing a primary DHW storage system
  • Replacing individual central heating systems in landing ducts with sets with balancing valves
  • Installing physical water treatment for the DHW
  • Cost of the work: €285,000 excl. VAT
  • Length of the work: 4 months


Renovating the Ribière site:

  • Renovating the 950 kW boiler house on the flat roof (19th storey) feeding a substation on the lower ground floor
  • Insulating the DHW columns
  • Cost of the work: €200,000 excl. VAT
  • Length of the work: 10 weeks

More references !