They live at the same roof vs They live under the same roof

Some examples from the web:

• They live at the same roof
• They live at the edge of woods, in clearings, among shrubs, near stony grounds.
• In their cares, conversations and actions, they must feel concerned for all their brothers and sisters who are part of the same human family, even if they live at the other end of the world.
• The Boarders are these girls, right, they live at the school, and they're from like farms and stuff.
• And they live at temperatures approaching the boiling point of water.
• In 2003 they issued Live at the Googolplex and the rarities record Slow Hole to China.
• They live at different levels of the forest, and have a wide range of colours.
• They live 2,000 miles away at the end of an old dirt road, and all they care about is me. Yes, we can trust them.
• The Times reported that they would live at Windsor in the "Devil's Tower"; instead, the Duke reopened his house at Kew.
• In the meantime they should live at peace in the nations where
• Rome live music: Rock Already in the early 70's Anthology was playing the rock music that they'll perform live at the Nag's Head.
• These species, mysterious in their behaviour, are the biggest fishes in the continental fresh or brackish waters, seen that they can often live at the mouths and in the estuaries of the rivers.
• They will live and work at the Villa Romana in Florence from February to November 2015.
• On August 22nd 2007, they streamed live the gig at the DTE Energy Music Theatre in Clarksto through the official myspace profile of "NowWhat".
• Every evening they have live music at the beach, which is so lovely at the end of the day to relax.
• In the United States, liability insurance covers claims against the policy holder and generally, any other operator of the insured's vehicle, provided they do not live at the same address as the policy holder and are not specifically excluded on the policy.
• They always live out at the edge or just outside of the village - out among the rice paddies or in a cluster of wild boulders - because their skills are not encompassed within the human modality.
• +44 will be on the Colin Murray show on BBC Radio 1 on Thursday 15th February at 10:00PM. Rumours are that they're going to play the live songs they recorded at the Maida Vale studio.
• They live at Sloan House by Cumnor.
• They live at 12 Kindergarten Street.
• Rome does ghettoes and foreigners feel so and they live at home.

Some examples from the web:

• They live under the same roof
• They live under the snow during the winter.
• They live under the Rule of St. Benedict, the 6th-century instructions for community living written by St. Benedict.
• People are unable to think about the future usually because they live under the spell of illusions of the past.
• It is a poetical diary about an exotic journey done in a unforgettable land: the mouth of the Po in Northern Italy. The traveller discover an unkown place where people leave and work hard. They live under the sea level.
• Even though she and Ben are separated, they live under the same roof.
• They're learning moderation so they can live under the radar.
• Therefore they live for years under the illusion that they can have control over their biological clock.
• In the beginning it was a panic, but Later, when they started to live under the ground, there was no sense to dissuade them.
• And what you are suggesting is that afterward they can all live together under the same roof.
• As long as Milosevic stays in power it is, of course, extremely difficult to tell the Albanians that they must continue to live under the yoke of Milosevic.
• Some missionaries also lived there, so the Dossier also includes some of the rules they had to live under while the missionaries were there.
• He who does all things according to the counsel of His will has been pleased to place men under various circumstances and to enjoin upon them duties peculiar to the times in which they live and the conditions under which they are placed.
• MARSOC, SEALs - they live under constant threat of death and torture.
• Women are often easy prey, given the poor conditions they live under.
• Although they live under constant threat, they are cared for.
• These guys - Special Forces, MARSOC, SEALs - they live under constant threat of death and torture.
• Charlie told me you made her live under the name of Ivy Dickens.
• Especially if the threat lives under the same roof.
• I want to live under the same roof as my wife.
• We don't have to live under the weight of those decisions.