Residential Building Services

JC McMahon Builders Undertake a Full Range of Residential Building Works Including Extensions, Attic and Garage Conversions and New Builds and Renovations.


A list of our services

Registered Gas Installer

Home Insulation, Attic & Walls

General Construction

New Homes Design & Build

Refurbishment/Renovations of buildings


Garage Conversions


Attic Conversions

Fire and Flood Damage Repairs & Insurance Work

Building Repairs Large & Small

Wood Flooring

Installation of Velux & Dormer Windows

Disability Bathrooms & Mobility Conversions

Ramps/Wheelchair Accessible


Roofing, Repair or Replace


Plumbing & Electrical

Registered Gas Installers

JC McMahon Builders are Registered Gas Installer’s servicing the Limerick and Clare regions.

What is a Registered Gas Installer (RGI)?
An RGI is an installer who has at least a GID (Gas Installer Domestic) qualification or equivalent in gas safety which makes him/her competent to carry out gas works. He/She will also have a valid insurance and will have paid the annual subscription fee which entitles him/her to be on the register of RGIs and carry an ID Card with a valid date.


Normal wear and tear as well as the effects of the combustion process affect the operation of your appliances. It is therefore important that you get your boiler serviced once a year. We can also carry out aSafety inspection and install a Carbon Monoxide Alarm.

By using JC McMahon Builders you have the peace of mind that you are dealing with a trained installer who has the required expertise in gas safety to ensure your gas installation is safe.

JC McMahon Builders are Registered Gas Installer with the RGII. To a receive a quote for your home contact us at:

For Further Information on Safe Gas Installation Please Visit the RGII Website –