Mechanical estimator

Mitie Projects; Cardiff; On-site; GBP 45,000 - 65,000; Full time

Job summary

Mitie Projects in Cardiff is seeking a Mechanical Estimator to join our hybrid, full-time team. You will prepare detailed cost estimates for HVAC, plumbing, and related building services, using drawings, specifications, and tender documents.

You will work with project managers, design teams, and procurement to support bid strategies, value engineering, and cost reporting, while keeping data up-to-date for budget reviews and variations.

Qualifications

• Strong mechanical estimating experience in construction or building services (HVAC/plumbing).
• Ability to read/interpret drawings, specs, tender docs.
• Experience with estimating software and Excel.
• Good commercial awareness and margin management.
• Relevant mechanical/building services qualification (HNC/HND/degree).
• Excellent communication and collaboration skills for multidisciplinary teams.
• Comfort working to deadlines in a fast-paced tender environment.
• Knowledge of UK construction standards and health & safety is advantageous.
• Previous estimator experience with national/regional contractor is beneficial.

Responsibilities

• Prepare detailed cost estimates for mechanical building services (HVAC, plumbing).
• Review drawings and tender documents; perform quantity take-offs; obtain quotations.
• Produce accurate cost plans and tender submissions.
• Collaborate with project managers, design teams, and procurement to support bid strategies, VE, and risk assessments.
• Maintain up-to-date cost data; contribute to budget reviews.
• Support ongoing projects with variations and cost reporting.

Skills

HVAC estimating

Plumbing systems

Reading drawings

Tender documents

Cost planning

Commercial awareness

UK regulations

Tools

Estimating software

MS Excel

Job description

Company Description

Mitie Projects, part of Mitie, delivers integrated construction and refit solutions for clients across both public and private sectors. The team works in partnership with organizations to create long-term value through a wide range of building services. In-house capabilities span consultancy, design, construction, delivery, warranty management, project management, and risk management. Operating nationally through locally based teams, Mitie Projects is dedicated to providing exceptional service and high-quality outcomes every day for its customers.

Role Description

The Mechanical Estimator is a full-time, hybrid role based in Cardiff, with flexibility for some work from home. This role is responsible for preparing detailed cost estimates for mechanical building services, including HVAC, plumbing, and associated systems, in line with project specifications and industry standards. Day-to-day tasks include reviewing drawings and tender documents, performing quantity take-offs, obtaining and assessing supplier and subcontractor quotations, and producing accurate cost plans and tender submissions. The Mechanical Estimator will collaborate closely with project managers, design teams, and procurement to support bid strategies, value engineering options, and risk assessments. The role also involves maintaining up-to-date cost data, contributing to budget reviews, and supporting ongoing projects with variations and cost reporting.

Qualifications

• Strong mechanical estimating experience within construction or building services, including HVAC and plumbing systems.


• Proficiency in reading and interpreting technical drawings, specifications, and tender documents.


• Experience using estimating and quantity take-off software, as well as MS Excel and other standard office tools.


• Good commercial awareness, including understanding of cost drivers, supply chain pricing, and margin management.


• Relevant technical qualification in mechanical engineering or building services (e.g., HNC/HND, degree, or equivalent experience).


• Effective communication and collaboration skills, with the ability to work with multidisciplinary teams and external partners.


• Strong numerical, analytical, and problem-solving abilities, with attention to detail and accuracy in cost planning.


• Experience working to deadlines in a fast-paced environment and managing multiple tenders or projects concurrently.


• Knowledge of UK construction standards, regulations, and health and safety requirements is advantageous.


• Previous experience in a similar estimator role within a national or regional contractor is beneficial.