Mechanical Estimator - Mechanical Building Services / M&E Contractor

David Leslie Ltd; Rownhams; On-site; GBP 40,000 - 50,000; Full time

Job summary

A mechanical building services contractor based in Rownhams is seeking a Junior Mechanical Estimator. This position offers a competitive salary of £40,000 - £50,000, a company car or car allowance, and a package including 25 days leave and pension scheme. The role provides comprehensive training and opportunities for career advancement. Ideal candidates will have a strong interest in the mechanical building services industry and skills in technical sales or project coordination.

Benefits

Company car or car allowance

25 days annual leave plus bank holidays

Pension scheme

Full training and mentorship

Qualifications

• No prior estimating experience needed; training will be provided.
• Strong attention to detail and good communication skills required.

Responsibilities

• Assist in preparing mechanical estimates for systems.
• Review drawings and specifications under guidance.
• Support early-stage budgets and cost plans.
• Maintain accurate tender documentation.

Skills

Technical sales experience

Purchasing or procurement experience

Mechanical design support

Project coordination

Strong interest in estimating work

Education

Relevant mechanical or building services qualification

Tools

Microsoft Excel

Job description

Junior Mechanical Estimator - Mechanical Building Services Contractor

£40,000 - £50,000 (reflective of experience) + Company Car or Car Allowance + Benefits Package

About the Company

A respected and steadily growing mechanical building services contractor based just west of Southampton. The company delivers full mechanical design, installation, and commissioning services across commercial, healthcare, and education projects, with project values typically ranging from £100K to £1M.

Well known for their technical quality, practical engineering approach, and long-standing relationships with main contractors, the business continues to grow and now has an excellent opportunity for a Junior Mechanical Estimator to join the team.

The Opportunity

This is an excellent opportunity for someone looking to build a long‑term career in mechanical estimating within the building services / M&E sector. The role offers hands‑on training, ongoing support, and structured progression into a full Mechanical Estimator position.

Ideal backgrounds include:

• Technical sales (HVAC, M&E suppliers, merchant sales)
• Purchasing / procurement
• Mechanical design support
• Project coordination / project engineering
• Mechanical or HVAC trades looking for an office‑based role
• Graduates or junior engineers looking to progress in building services

Key Responsibilities

• Assist in preparing mechanical estimates for heating, cooling, ventilation, and domestic water systems.
• Review drawings, specifications, and tender documents under guidance.
• Carry out basic take‑offs (full training provided).
• Liaise with suppliers and subcontractors to gather quotations and technical information.
• Support early‑stage budgets, cost plans, and design‑and‑build proposals.
• Contribute to tender submissions, cost summaries, and technical proposals.
• Maintain accurate tender documentation and organised internal records.

Experience & Background

Applications are welcome from candidates who have one of the following:

• Experience in M&E or construction sales, purchasing or technical support.
• A background in mechanical building services, HVAC, plumbing, or similar.
• Experience in project coordination or project engineering.
• A relevant mechanical or building services qualification (advantageous but not essential).
• A strong interest in commercial and estimating work with a willingness to learn.

You do not need prior estimating experience — training will be provided.

Personal Attributes

• Motivated, reliable, and eager to learn.
• Good communicator with strong attention to detail.
• Comfortable with numbers and Microsoft Excel.
• Enjoys a mix of technical and commercial work.
• Works well within a small, supportive team.

Remuneration Package - Junior Mechanical Estimator

• £40,000 - £50,000 basic salary (reflective of experience and seniority).
• Company car or car allowance.
• 25 days annual leave plus bank holidays.
• Pension scheme.
• Full training, mentoring, and clear progression into a Mechanical Estimator role.

If you are an ambitious individual with experience in mechanical estimating, technical sales, purchasing, project coordination, or mechanical building services and are looking for a long‑term opportunity with genuine development and career progression, we would be delighted to hear from you.

Please apply online today, or contact Rob at David Leslie Ltd for an informal and confidential discussion.

About David Leslie Ltd

David Leslie Ltd is a family‑run construction recruitment consultancy with over 20 years' experience connecting professionals and employers across the UK. Specialising in the Building, Fit‑Out, and M&E Building Services sectors, our approach is built on trust, integrity, and long‑term partnerships, ensuring both clients and candidates receive a service that is personal, transparent, and expertly delivered.