Office Administrator; Construction

New Job Vacancy – Office Administrator (Construction)

Full Time, Permanent
· Hybrid (Gerrards Cross base)
Salary: £28,000–£32,000 per year (DOE)
Hours: 37.5 hours per week
Holiday: 20 days annual leave + Bank Holidays + Birthday Day Off
Hybrid Working: 4 days in office (Gerrards Cross), 1 day from home

Chalfont Electrical Services is a well-established electrical contractor delivering high-quality installation, design, maintenance and testing services across Greater London and the surrounding counties. Based in Gerrards Cross, Buckinghamshire, we are continuing to grow and are now seeking an experienced, highly organised administrative professional to support our operations and help us deliver an efficient, client-focused service.

We are seeking a proactive, detail-oriented Office Administrator to join our close-knit team. Working under our Operations Manager, you will provide essential administrative support across the business.

The role includes maintaining accurate documentation, updating spreadsheets and trackers, supporting materials and invoice logging, assisting with O&M documentation, and providing administrative support for ISO and accreditation requirements.

This is a fast-paced position that requires strong data-entry skills, excellent organisation, and the ability to manage multiple tasks within a busy construction-services environment.

Manage materials and supplier invoices: track daily materials orders, log invoices and credits, and maintain the materials tracker.

Maintain document control, ensuring all company documents, spreadsheets and trackers are updated, version-controlled, and stored correctly in line with ISO requirements.

Assist with ISO 9001 and ISO 14001 administration, including maintaining records, supporting audits, and ensuring documentation accuracy.

Provide day-to-day administrative support across all departments, including Projects, Small Works, Maintenance, and Testing.

Support preparation of company documentation including quotes, reports, O&M manuals, and project files.

Collate data and update spreadsheets and trackers daily (
strong Excel skills essential
).

Assist with Health & Safety administration, including scheduling staff training, updating training records, and supporting RAMS and toolbox talk distribution.

Monitor and respond to administrative emails, ensuring clear and timely communication with clients, engineers, suppliers, and colleagues.

Answer incoming calls and provide polite, friendly customer service.

Maintain office supplies, keep the office organised, and support general office upkeep.

Support ad-hoc administrative tasks as required — adaptability and proactive problem-solving are essential.

Proven experience in a construction-related administrative or office role (or similar administrative background).

Excellent proficiency in Microsoft Excel and Word; strong overall computer literacy.

Exceptional organisational skills with high attention to detail — this role involves significant data entry and tracking.

Strong interpersonal and communication skills; able to interact professionally with site engineers, clients, and colleagues.

Self-motivated, proactive, with a positive “can-do” attitude and willingness to contribute beyond basic tasks.

Able to follow instructions accurately and work independently when required.

Experience with invoice administration or bookkeeping support is desirable (but not essential).

Be part of a growing business with a friendly, supportive team.

Real opportunity to develop in line with our expansion plans.

Hybrid working flexibility (4 days in office, 1 day from home).

Competitive salary and permanent contract.

20 days annual leave + Bank Holidays.

An additional paid day off for your birthday each year.

Please send your CV to (FAO: Daniel Coleman) or call for further information.

Chalfont Electrical Services is proud to be an Equal Opportunity Employer. We welcome applications from all backgrounds and treat all applicants equally regardless of race, religion, gender identity or expression, sexual orientation, age, disability, or other characteristics.

For more information please use the details below to get in touch.

Office 104,Building 1, Chalfont Park, Gerrards Cross, SL9 0BG