Mae tai o ansawdd yn hollbwysig ar gyfer lles pobl.  Rydym i gyd yn gwybod bod amodau byw gwael yn effeithio ar iechyd corfforol a iechyd meddwl person, yn ogystal â'n gallu i ffynnu, gydag effeithlonrwydd ynni gwael yn effeithio ar ein gallu i gynnal cartref cynnes, a’r angen ehangach i gyrraedd targedau o ran lleihau gollyngiadau carbon a mynd i’r afael â’r newid yn yr hinsawdd.  Gall diffyg tai addas effeithio ar allu ardal i ddenu cyfleoedd cyflogaeth. Mae hefyd yn rhwystr i greu cymunedau cadarn a chydlynol sydd yn cwrdd ag anghenion pawb, gan gynnwys plant.
Quality homes are crucial to people’s well-being.  We all know poor living conditions affect a person’s physical and mental health as well as their ability to prosper, with poor energy efficiency affecting their ability to maintain a warm home, and the  wider need to meet carbon reduction targets and tackle climate change.  Lack of adequate housing can impact adversely on an areas’ ability to attract investment and employment opportunities. It is also a barrier to building resilient, cohesive communities which meet the needs of all, including children.