The mosque is built in traditional Arab style with modern features. Spanning an area of 175,164 square meters, the mosque features a centrally air-conditioned hall where up to 11,000 men can comfortably participate in prayers. Additionally, a generously sized enclosure adjacent to the central hall accommodates 1,200 women. The mosque boasts three primary entrances and 17 side entrances. The central hall is adorned with 28 large domes, while the outer quadrangle is crowned with 65 domes. On the whole, the mosque can hold a congregation of 30,000 people. The mosque building is divided horizontally starting from the eastern side, ascending towards the qibla to the outer courtyard, the arcades, the inner courtyard “the mosque courtyard” and finally the prayer hall “the prayer hall”. The total built-up area of the mosque building reaches 19,565 square meters, while the outer courtyard extends over an area of 14,953 square meters, and connects the level of external facilities with the level of the mosque courtyard via steps and ramps for people with special needs from the three sides. The mosque includes ablution areas for men and women. The design of water services was inspired by the design of one of the traditional freshwater resources in Qatar.

The mosque’s orientation toward Ka’aba contributes in maximizing the daylight through the façades openings reducing the need for artificial lighting. Taking into consideration the sun orientation during high summer and deep winter seasons, masjid is strategically formed so heat gain and glare are mitigated when sunlight is excessive. The massing of the masjid is designed in relevance to sun path as well as wind direction protecting from the dusty North (shamal) wind while maximizing the building exposure to the onshore breezes.

Lighting scheme in the mosque enhances the spiritual experience and encourage prayers to have a more profound contemplation and concentration on their prayers. In the case of Imam Muhammad ibn Abdul Wahhab Mosque, around 157 circular multi-layered brass chandeliers of different size are hanged on the rise of 14 meters, used to lit and adorn the prayer hall, corridors and hallways. The largest chandelier is raised up to 7 meters from its base to the suspension point. The lighting is controlled through automatic system commensurate with the amount of sunlight within different times of the day; accordingly, artificial lighting is maximized when the amount of natural light entering the prayer hall through the openings is minimal. The lights of the mosque have maintained a tradition of changing colour when celebrating different religious occasions throughout the year such as Eids and Ramadan. The external car parking lights up at night by 1816 short stone light poles that were specially manufactured to fit the pavement basalt stone material. Additionally, 120 specially designed stone terraces containing lighting equipment are spread all around to light up the outer yard, along with the traditionally designed lamps on the edge of the walls.
The mosque looks histrionic, dramatic and impressively lit at night using the intelligent lighting system designed to portray the architectural and aesthetic value of the masjid thanks to the hidden lighting system, the indirect lighting, and the LED. The new BAS (Building Automation System) is integrated to adjust and monitor air conditioning, firefighting, sound, lighting and broadcasting systems.