Home Again received positive reviews from music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album received an average score of 72, based on 25 reviews.
Alexis Petredis of The Guardian gave high praise to Butler's production for capturing early '70s soul music and Kiwanuka's vocals and lyrics for feeling authentic, saying that, "Home Again's strength lies in the fact that it manages to tick a lot of boxes without sounding like it set out to tick a lot of boxes." Gareth James of Clash also praised Butler for his soft, acoustic production and compared Kiwanuka's vocals positively to Bill Withers, calling the album "an absolute treat for fans of rootsy vintage soul and a remarkable statement of intent for a debut release." Helen Brown of The Telegraph praised the production aesthetics for sounding complex and easy-going, saying that, "Despite its lyrical portrait of a constant worrier who feels lost and lonely, Home Again is a remarkably assured and sophisticated album." Hilary Saunders of Paste admired Kiwanuka's vocals and lyrics for resembling '70s soul artists like Otis Redding and Marvin Gaye, concluding with, "On Home Again, the young Kiwanuka proves that youth and wisdom are not mutually exclusive and his insights and talents, albeit still a bit raw, suggest great things to come."
Thom Jurek of AllMusic noted that Butler's vintage sounding production felt paint-by-numbers at times and Kiwanuka's lyrical content needed fine-tuning, concluding with, "Despite difficulties, Home Again is a promising debut by an artist who will no doubt deliver big if developed properly." Andy Gill of The Independent also found Kiwanuka's vocals and lyrics needing a bit more urgency and edge to them but called the album "a pleasant enough handful of easy-going songs, in which the focus on warmth has left them lacking bite." Emily Mackay of NME questioned the album's lack of gritty lyrics and false authenticity but said there were tracks that felt like genuine work, concluding that "Home Again provides a sumptuously soft place for tired ears to rest. Enough for many, for now, and a good start." Aaron Lavery of Drowned in Sound felt the album was depressing at times but said that "[I]t’s a minor quibble however, of a record that has clearly been crafted with great care and a terrific talent behind both the songwriting and the production."