Sari Temple was rediscovered in the early 20th century in a state of severe damage. The first restoration was carried out between 1929 and 1930. Regarding the restoration, Kempers is of the opinion that the results were less than satisfactory, meaning that the restoration had not succeeded in restoring the integrity of the original building. This was due to the many parts of the temple being lost. In addition, when it was first discovered, there were parts of the building that had been damaged by age, especially those that were not made of stone.

In the 19th century, about 130 m from Kalasan Temple, the ruins of a temple were found, which were estimated to be the residence of the priests. The current Sari Temple, which is located not far from Kalasan Temple, is only a part of the collection of temples that have been lost. It is estimated that there used to be a stone fence surrounding the temple. The entrance to the temple is guarded by a pair of Dwarapala statues holding a mace and a snake, like those in front of the Plaosan Temple.

The Sari Temple is rectangular, measuring 17.30 x 10 m, although it is said that the original basic plan was longer and wider, because the original foot protruded about 1.60 m. The overall height of the temple from the ground level to the top of the stupa is 17 - 18 meters. The temple gate, which was about a third the width of the front wall and half the height of the temple wall, is no longer there. All that remains is the remains of the place where the gate wall meets the front wall.

According to Kempers, the Sari Temple was originally a two- or even three-story building. The upper floor was used to store items for religious purposes, while the lower floor was used for religious activities, such as teaching and learning, discussions, etc. The walls of this temple are also covered with vajralepa (brajalepa), a protective layer that is also found on the walls of the Kalasan Temple. From the outside, it can be seen that the body of the temple is divided into two levels, namely by the presence of a wall that protrudes transversely like a "belt" around the middle of the temple body. The division is made clearer by the presence of flat pillars along the lower level walls and pillared niches along the upper level walls.

The niches along the outer walls of the temple, both on the lower and upper levels, are currently empty. It is estimated that the niches were originally decorated with Buddha statues. The outer walls of the body are filled with beautiful statues and other decorations. The door and window lintels are each flanked by a pair of male and female statues in a standing position holding a lotus. The total number of statues is 36, consisting of 8 statues on the front (east) wall, 8 statues on the north wall, 8 on the south wall, and 12 on the west (rear) wall. The sizes of the statues are the same as the size of the human body in general.

In other parts of the walls are filled with carvings of various forms, such as Kinara Kinari (bird man), vines, and kumuda (leaves and flowers extending out of a round vase). Above the window sills and niches are decorated with Kalamakara without lower jaws in a very decorative and far from scary form. As with the walls of the Kalasan Temple, the walls of the Sari Temple are also covered with a layer of Vajralepa, which serves to provide bright colors and preserve the stone. The stairs up to the surface of the foot of the temple have been destroyed. On the side of the stairs there is a stone pedestal. It is not clear whether the stone pedestal is in its original place, but it seems that the bottom of the pedestal was previously submerged in the ground.

The entrance is in the middle of the long side on the east side. Originally, the doorway in the temple wall was located in a protruding viewing chamber. Currently, the viewing chamber is gone, so the entrance to the inner room of the temple can be seen directly. The decoration on the frame and Kalamakara above the doorway is very simple, because the beautiful decoration is located on the outer wall of the door chamber.

Inside the temple there are three rooms in a row, each measuring 3.48 m x 5.80 m. The middle room and the other two rooms are connected by a door and window. These rooms were originally built as multi-storey rooms. The height of the walls is divided in two by a wooden floor supported by fourteen cross-beams, so that in total there are 6 rooms in this temple. The interior walls of the rooms are plain without decoration. On the back wall of each room there is a kind of shelf that is quite high which was used as a place for religious ceremonies and to place statues. On the ground floor there are several statue stands and niches that used to be used to place statues. None of these statues still remain today. On the walls of the north and south rooms there are niches for placing lights.

The wooden floors and parts of the building are now gone, but the walls still show holes where the support beams were attached. On the southernmost wall of the room, there are stones carved diagonally, which function as supports for the wooden stairs.

The roof of the temple is a flat square with 3 niches on each side. The niche frame is also decorated with vine carvings and above the niche threshold is also decorated with Kalamakara. The peak of the temple is a row of stupas, consisting of a stupa at each corner and one in the middle of the roof.