Once you venture north from your station you will be able to see empty plots of land waiting for you to build on them. Your town has a train infrastructure, so you need some people to use it.
Let´s build them some housing.
With houses built, your population grows.
Population is essential if you want to expand your warehouse.
Once you filled all available plots with buildings or parks you will need to upgrade these to be able to get more population in your town.
NOTE: Free building parcels are unlocking progressively according to your level. The higher the level you have, the more parcels you get.
City building parcels unlock
Level 1 - 10 parcels unlocked.
Level 10 - 17 parcels unlocked.
Level 40 - 22 parcels unlocked.
Level 65 - 29 parcels unlocked.
Level 94 - 34 parcels unlocked.
Level 135 - 39 parcels unlocked.
Level 170 - 45 parcels unlocked.
The game will offer you a random choice of 4 buildings to upgrade. This choice is random, so it may happen that you won´t have enough materials for an upgrade at that moment.
Once you upgrade a building the possibility to upgrade another building will be transferred to another random building, keeping the total of 4 buildings being upgrade-able.
A timer will start - after the end of which you will be able to upgrade the building.
All buildings start on level 1 with a certain progress. This differs from building to building.
Upgrading a building will not move it instantly to level 2 or higher. For a level up of the building you will need to upgrade it several times.
If you wish to change the number of buildings in your city you can place unwanted buildings in your Inventory. This is how:
tap a building you want to remove as long as it's not showing as in upgrade status
once the building screen appears click on the "Add to Inventory" button
your building is now in Inventory. When you acquire a building as a reward from an event it's placed in your Inventory. You would then tap "PLACE" too add it to a vacant City space.
More advanced upgrade will require a certain amount of city plans, which can be acquired from ship captains.
Once you have enough population, you can upgrade that awesome full warehouse of yours!