Senior Mechanical Estimator

Avolon M&E; City Of London; On-site; GBP 85,000 - 95,000; Full time

Job summary

A leading Building Services Contractor is seeking an experienced Senior Mechanical Estimator to join their pre-construction team in London. The role involves preparing mechanical tenders, managing supplier enquiries, and mentoring junior staff. The company offers a competitive salary of £85,000 - £95,000, a supportive work environment, and opportunities for career progression.

Benefits

Company pension

Cycle to Work Scheme

Life Insurance

Employee Assistance Programme (EAP)

Qualifications

• Extensive experience in mechanical estimating within building services/M&E contracting.
• Ability to interpret technical documents, drawings and specifications confidently.
• Proactive, organised and detail-driven approach to managing multiple bids.

Responsibilities

• Preparing, analysing and submitting mechanical tenders across building services projects.
• Carrying out detailed take-offs, cost build-ups, and analytical estimating.
• Managing supplier and subcontractor enquiries for competitive quotations.

Skills

Mechanical estimating experience

Technical understanding of mechanical systems

Commercial awareness

Strong communication skills

Proficiency in estimating software

Attention to detail

Tools

Microsoft Excel

Job description

Senior Mechanical Estimator

Salary: £85,000 - £95,000

Location: West London / Hayes (Office-based) + site visits as required (all London based sites)

Type: Full-time, permanent

Benefits: Company pension, Cycle to Work Scheme, Life Insurance, Employee Assistance Programme (EAP)

A leading Building Services Contractor is seeking an experienced Senior Mechanical Estimator to join their growing pre-construction team. This is a senior role within an established M&E business, offering long‑term stability, strong career progression, and the chance to influence and improve estimating processes across multiple projects.

The Role

As a Senior Mechanical Estimator, you will play a key part in securing new business and ensuring tenders are prepared accurately, competitively, and in line with company standards. Responsibilities include:

• Preparing, analysing and submitting mechanical tenders across a diverse range of building services projects.
• Carrying out detailed take‑offs, cost build‑ups, and analytical estimating.
• Reviewing tender documentation, drawings, specifications and contractual requirements.
• Managing supplier and subcontractor enquiries to obtain competitive and compliant quotations.
• Identifying risks, opportunities, and value‑engineering options during pre‑construction.
• Liaising with internal teams, senior leadership, clients, consultants, and supply chain partners.
• Presenting commercial and technical aspects of tenders for director-level approval.
• Supporting handover processes to delivery teams with clarity and accurate documentation.
• Contributing to the development of estimating systems, cost libraries and process improvements.
• Mentoring and supporting junior team members where required.

About You

• Extensive experience in mechanical estimating within building services/M&E contracting.
• Strong technical understanding of mechanical systems and installation methods.
• Ability to interpret technical documents, drawings and specifications confidently.
• Excellent commercial awareness and understanding of tendering processes.
• Strong communication and negotiation skills with both internal and external stakeholders.
• Proficiency in estimating software and Microsoft Excel.
• A proactive, organised and detail‑driven approach to managing multiple bids.

What's on Offer

• Competitive salary £85-95k
• Strong, stable company with a healthy project pipeline
• Supportive senior leadership team and collaborative working environment
• Opportunity to shape processes and contribute to business growth
• Long‑term progression within pre‑construction and estimating