Assistant Sustainability Consultant

Weston Homes Plc; United Kingdom; On-site; GBP 32,000 - 42,000; Full time

Benefits offered by this job

Car allowance

Fuel card

Private healthcare

Pension up to 10%

Life insurance

In-house health nurse

Gym access

Training & development

Annual bonus

Long service awards

Staff social calendar

Job summary

SES are seeking an Assistant Energy & Sustainability Consultant to join our growing team. You’ll work with experienced consultants across residential energy compliance, thermal modeling, and sustainability strategies, with structured training to support your career progression.

You’ll gain hands-on exposure to SAP, HEM, EPCs, TM59 simulations, RdSAP and SBEM assessments while contributing to credible energy statements for development projects. A proactive, analytical mindset is essential.

Qualifications

• Qualified On-Construction Domestic Energy Assessor (OCDEA) with required GCSEs in Maths and English.
• Experience conducting SAP assessments for new builds and refurbishments, plus U-value calculations.
• Familiarity with non-domestic SBEM modeling (Level 3 and 4).
• Knowledge of RdSAP for existing dwelling assessments and thermal bridging calculations.

Responsibilities

• Energy & Compliance Modeling: Conduct SAP assessments, HEM evaluations, and EPCs.
• Thermal & Overheating Analysis: Part O simplified overheating assessments; TM59 dynamic simulations under CIBSE guidelines.
• Sustainability Strategy: Draft Energy Statements for development projects.
• Consultancy & Fieldwork Support: Shadow senior consultants on SBEM assessments and thermal surveys.
• Business Development & Team Support: Assist with marketing initiatives across the Weston Group.

Skills

SAP assessments

HEM evaluations

Energy Statements drafting

Thermal imaging support

Education

OCDEA

GCSE Maths & English

Tools

SBEM modeling

RdSAP methodology

U-value calculations

Part L & Part O knowledge

Job description

A little bit about the role...

Are you looking to kickstart or advance your career in energy consultancy? Sustainability Energy Services (SES) is seeking a motivated and analytical Assistant Energy & Sustainability Consultant to join our growing team.
In this role, you will work alongside experienced consultants, gaining hands‑on exposure across residential energy compliance, thermal modeling, and sustainability strategies, while benefiting from structured training to support your career progression.

Responsibilities

• Energy & Compliance Modeling: Conduct SAP assessments, Home Energy Model (HEM) evaluations, and generate Energy Performance Certificates (EPCs).
• Thermal & Overheating Analysis: Perform Part O simplified overheating assessments for residential properties and assist with TM59 dynamic thermal simulation modeling under CIBSE guidelines.
• Sustainability Strategy: Assist with drafting comprehensive Energy Statements for development projects.
• Consultancy & Fieldwork Support: Shadow senior consultants to build expertise in dynamic modeling, thermal imaging surveys, and SBEM assessments for commercial buildings.
• Business Development & Team Suppt: Collaborate with consultants and the administrative team to assist with marketing initiatives and broader work across the Weston Group.

Qualifications

• Qualifications: Qualified On-Construction Domestic Energy Assessor (OCDEA); GCSE Grade C/4 or above (or equivalent) in Maths and English.
• Technical Experience: Proven track record conducting SAP assessments for new builds and refurbishments, alongside the ability to carry out U-value calculations.
• Experience with non-domestic SBEM modeling (Level 3 and 4).
• Familiarity with RdSAP methodology for existing dwelling assessments.
• Knowledge of bespoke thermal bridging calculations and condensation risk assessments.
• Planning & Compliance: Strong understanding of local planning policies, energy statements, and Building Regulations (specifically Part L and Part O).

Benefits

• Highly competitive Annual Salary
• A company vehicle or car allowance and fully expensed fuel card for personal and professional milage
• Generous company pension (employer contribution up to 10%) increasing with length of service
• Private healthcare for employees, partner and children up to the age of 21
• 22 days holidays, plus English bank holidays, plus the Christmas shutdown (not deducted from your holiday allowance)
• Life Insurance - 4x salary
• Income Protection
• Discretionary Annual Bonus depending on company performance
• Fully equipped gym at head office - Health Checks, Gym Programmes, and Healthy Lifestyle Sessions
• Extensive training and development opportunities
• Enhanced Maternity, Paternity Pay
• In house Occupational Health Nurse
• Long Service Awards
• Vouchers to celebrate marriage, the birth / adoption of a child
• Comprehensive social calendar including but not limited to; Family Fun Day; Company Bowling, Christmas Party and various activities and sporting events throughout the year.

About us

SES are a local Health and Safety Consultancy providing a "one stop shop" for all environmental services including energy, testing, sustainability and analysis requirements for Clients throughout the South East. We work collaboratively to ensure we exceed our clients needs.