Pokemon BDSP Secret Base Location, How to Expand and Decorate

The underground of old Diamond and Pearl have been revamped into Grand Underground and you can make your own base in there. In this guide, we will tell you how to make a Secret Base in Pokemon BDSP.

Pokemon BDSP Secret Base Location

Secret Base was a feature already present in the old Pokemon Diamon and Pearl and this time they make a return in Brilliant Diamond and Shining Pearl as part of the Grand Underground.

However, you can’t just enter the Grand Underground and build a base there as there are some prerequisites you need to complete beforehand and tools you need to acquire.

How to Make Secret Base in Pokemon BDSP

Start by going to Eterna City and making your way to the “Underground Man’s House”, located in the middle of the city.

Once you go inside the house, talk to the old man and he will give you an Explorer Kit.

Now go and visit the Grand Underground area at least once after which you need to go back and talk to the old man again. He will tell you to go down and dig up some treasure for him.

You need to go back to the underground and look for the shiny dots on the mini-map. Dig up any one of them to collect the treasure and go back to the old man.

This time he will award you with the Drilling Kit. This is what you need to build your secret base.

Go back again to the underground area and decide where you want your base to be. Once you’ve found the ideal spot, simply walk up to the nearby wall and dig in it to create your base.

You can then enter your newly created secret base and place different statues inside that will give you various boosts. You can change the position and orientation of these statues as you see fit.

How to Expand Secret Base in Pokemon BDSP

There are special sphere traders in the Grand Underground areas of the map. These traders offer a variety of services like trading spheres and treasures with you. There is one on each of the 4 corners of the map. Among the services they offer is the service to expand your base.

But it doesn’t come cheap and will require a huge amount of both small and large spheres till you can get your base expanded to the max. You can buy the expansion two times, the first time gives you 16 additional tiles, and the second and final expansion gives you 28 more tiles.

Pokemon BDSP Secret Base Decorations

The only types of decorations available to players are Statues. You can place and modify these Statues using pedestals. To get pedestals, you need to go to sphere traders again and purchase them. Statues aren’t merely for decoration, they also increase your Pokemon encounter chances based on the type of Statue.

A passionate video gamer looking at the world with an analytical mindset while writing about it too!