Selling, letting or running a public building? You need a valid energy certificate.
Commercial (non-domestic) BER assessments and Display Energy Certificates — carried out by registered assessors, for offices, retail, industrial and public-sector buildings across Ireland.
Non-domestic BER · Display Energy Certificates (DEC) · Annual DEC renewals
Why Forsah is the right fit for your building.
A personal introduction from Sean Collins, Forsah's Commercial Director
Commercial energy compliance, handled end to end.
From a first-time sale certificate to keeping a public building's DEC renewed year after year — here's what working with Forsah covers.
Commercial BER Assessment
An asset rating for your building's design and fabric — required whenever a non-domestic building is sold or let.
Display Energy Certificate (DEC)
An operational rating based on your building's actual metered energy use — required annually for qualifying public and frequently-visited buildings.
Site Survey & Data Collection
One site visit to gather everything needed — fabric, services, meter readings — scheduled around your building's operating hours.
Renewal Reminders
DECs need renewing every year. We track your renewal date so it's never the thing that catches you out.
Not sure which certificate your building needs?
They sound similar, but they measure different things and apply in different situations. Here's the short version — we'll confirm exactly what applies to your building.
Commercial BER
- Rates the building's design and fabric, not how it's actually used day to day
- Required whenever a non-domestic building is sold or let
- Must be included in sale and rental advertisements
- Valid for up to 10 years, or until a major renovation changes the rating
- Responsibility of the building owner or landlord
Display Energy Certificate
- Rates the building's actual metered energy use over the past year
- Required for buildings over 500m² that are occupied by a public body, or frequently visited by the public
- Must be displayed prominently, visible to the public
- Renewed every year — it's a live rating, not a one-off
- Issued by SEAI via a registered DEC assessor
General guide only — exact thresholds and exemptions can depend on your building's use, size and ownership. Talk to us and we'll confirm exactly what's required for your property.
Talk through your building's certification requirements.
Tell us about your building and we'll come back to you, or book 15 minutes to talk it through directly — no obligation.
Request a Proposal
Tell us about your building and we'll come back with a tailored proposal.
Thanks — that's on its way to us.
We'll come back to you within one working day with next steps.
Book a Meeting
Pick a time to talk it through directly — 15 minutes, no obligation.