Subnautica 2 | Base Building - Best Locations and Uses

Base building in Subnautica 2. Guide includes how to build base, best locations, how to power up facilities, start farming resource, build areas, unlock blueprints, tips, and more!

Table of Contents

Base Building
Base Best Locations
Base Uses
What is Base?

Base Building

Craft Habitat Builder

To start building, you will need the Habitat Builder. You can craft it in the Fabricator with the required materials. This tool allows you to place rooms, corridors, foundations, and other base modules underwater.

Habitat Builder Recipe

Tool	Details
Habitat Builder	Titanium x2 Glass x1 Basic Battery x1 Copper Wire x1

Select Location to Build Base

Base Building - Best Locations and Starter の画像

Choosing the right location is important because it affects how safe, efficient, and resource-rich your base will be. Look for areas with nearby essential resources, and manageable threats to make building and expansion easier.

▶ Check Base Best Locations

Also Determine With Base Size in Mind

Starter Base	Upgraded Base

A larger base allows for more storage, power systems, and specialized rooms, while a smaller base is easier to build and maintain but offers fewer capabilities.

Plan Layout to Avoid Overcrowding

The number of items you can place inside a base depends on its size and available space. Keep in mind that smaller rooms have limited capacity, so careful planning is needed to avoid overcrowding.

Place Structures

Open the build menu, and select the structure you want to place. Position it on suitable terrain, confirm placement, and continue adding modules as your base grows.

Base Structures

You can find Base Pieces in the Builder Tool, which provide structural options for base construction, including both standard components and advanced modules.

Remove Parts Using Deconstruct Mode

Use Deconstruct Mode with the Habitat Builder to safely remove unwanted base parts and recover some of the materials used during construction.

Power Up Your Base

Base facilities require energy to function. Early in the game, the simplest way to generate power is by building Solar Panels on the exterior of your base.

Base Power Source

Type	Details
Solar Panels	Get energy from sunlight
Hydroelectric Turbines	Generate energy from underwater currents
Thermal Plants	Use heat from volcanic and geothermal areas
Bioreactors	Burn organic material for steady power

Each base power source offers a different balance of efficiency, reliability, and availability depending on your environment and progression.

Use Two or More Energy Supply

This setup reduces the risk of power shortages and keeps essential base functions running even when one source becomes less effective due to environmental conditions.

Base Best Locations

Best Base Biomes

Area	Details
Shallow Areas	Ideal for early-game bases with easy access to basic resources and minimal threats.
Bedrocks	Good balance of safety and resource variety, especially for early expansion.
Thermal Vents	Building near one can be great for power generation and mid-game progression due to heat-based energy sources.
Caves	Excellent for mining rare materials and building deeper, more advanced bases.

Biome Transition Zones are Ideal

Areas between two biomes provide mixed resources and strategic access to multiple regions, making them ideal for exploration and base placement.

Flat Areas are Generally Recommended

Flat areas are ideal for building because the even terrain makes base placement easier, reduces structural clipping issues, and allows for smoother expansion as your base grows.

Can Build in Uneven Terrain

Bases can still be built on uneven terrain using the flexible construction system, though flatter areas make placement and expansion much easier.

Base Uses

How to Use Base

Shelter / Headquarters
Respawn Point
Farming Resource
Store Collected Resource
Crafting

Shelter for Pioneer

A base provides a safe environment with oxygen and protection from underwater hazards.

Headquarters for Co-Op

Subnautica 2 Base Building with Friends Image

It can be used as a shared base for building and playing with friends, allowing multiple players to collaborate in real time to construct, expand, and manage the same underwater facility.

Multiplayer Guide

Respawn Point

A base can also be used as a respawn point to reduce travel time after death, helping you quickly recover any lost items and continue your progress.

Death Guide

Farming Resources

A base can streamline returns after harvesting resources from nearby biomes, making repeated collection runs faster and more efficient.

Grow Your Own Garden

Using specialized farming modules, you can plant to have a steady supply of food and crafting materials, helping support long-term survival and reducing the need for constant resource gathering.

All Items & Resources List

Store Collected Resources

You can also add storage to your base to secure collected materials and quickly access them whenever you need them for crafting or building.

Crafting Equipment and Items

As your base grows, you can add advanced crafting stations to create better gear, turning it into a full workshop for progression and survival.

Free Up Inventory Space

This also helps create more space in your character’s inventory, making exploration and resource gathering more efficient.

What is a Base?

Customizable Buildings

A base in Subnautica 2 can serve as an alternative to the Lifepod and the Welcome Center, giving you a secure place to store resources, generate power, and support your early exploration.