The new capital of Indonesia, which is currently under construction, has several major frameworks that underlie its development vision. One of them is to become a modern city with international standards that is progressive, innovative and competitive in various aspects, such as technology, architecture, urban planning and social issues. Apart from that, IKN will also be equipped with world-class infrastructure and connected to various other international city centers. The infrastructure that is built will then function over a period of time. In the future, this infrastructure will need maintenance, repair, and possibly replacement. These activities often require initial data when the infrastructure was built. If infrastructure repair activities are carried out far from the time of construction, it is often difficult to find the necessary data. This article discusses the importance of having final recorded data (as built data) available for infrastructure that has just been built so that in the future there will be no difficulties in rehabilitation and renovation activities. The study was carried out by taking old infrastructure assessment cases as examples, namely the plan to replace the Ketenger power plant penstock which is 84 years old and the rehabilitation plan for the Pelus River Bridge which is 52 years old. Both are located around a city that is not too big, namely Purwokerto, however, they can be used as a reference in developing the concept of as-built data which can be said to be a development of as-built drawings which have long been known in the world of construction. To support this concept, it is necessary to use the latest technologies such as big data, artificial intelligence, internet of things, virtual reality and other technologies.