Moonbuilding 2703 AD has so far received positive reviews from music critics, with some saying it is the band's best album in over 20 years. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album received an average score of 78, based on 6 reviews, which indicates "generally favorable reviews" making it The Orb's highest rated album on the site. In his 4 star review for Record Collector, Phil Smith says that the album has "Walloping techno rhythms simply step in and out of pretty melodies, pleasing textures and grainy sample loops" and concluding the review by saying that "While the album is relatively low-key and meandering, that’s arguably what we want from The Orb – and hence it might just be the one you’ve been waiting on from them for 20 years." Barney Harsent of The Arts Deck said that Moonbuilding 2703 AD is "without doubt, the most coherent offering from the Orb (currently comprised of Alex Paterson and Thomas Fehlmann) since Adventures Beyond the Ultraworld" and also said that their "latest offering is similarly hurtling through space once more, and reminding us of their conceptual debut that slapped us around our collective face back in 1991. It feels like a similar event." Gavin Miller of Drowned in Sound in his 8/10 review said that Moonbuilding 2703 AD is "an album heaving with ideas, but just coherent enough to stick together as one piece of work" and went on to say that the album is a "great little re-introduction to all things Orb." Benjamin Aspray of Slant Magazine starts off his 3.5 stars out of 5 review by saying "With Moonbuilding 2703 AD, the Orb makes a full circle back to the long-form conceptual terrain of 1991's game-changing Adventures Beyond the Ultraworld and its follow-up, U.F.Orb. The album sustains a progressive composition over four distinct parts, forgoing instant gratification for slow builds and subtle variations, culminating in the Orb's most cohesive work in ages."He ends the review for the album saying "It's never quite a tour de force, but as a union of the Orb's heady roots with their spiritual ascendants' minimalist ethos, the album is a consistently satisfying groove machine, and a worthy entry to the upper ranks of the Orb canon."