M & J Building & Joinery Services Ltd offer professional new build services for both South and West Yorkshire, plus the surrounding regions. Our team is fully qualified and insured, and undertake new build projects of all sizes.M & J Building & Joinery Services Ltd. Our commitment is to your complete satisfaction, which we achieve by assisting you in choosing the new build services most suitable for you, and delivering these services at the very highest quality.M & J Building & Joinery Services Ltd offer clients professional extension building services that are designed to maximise the overall size of your property with minimal interference to the occupants' daily routines.