How to Unlock Base Building in Subnautica 2: Complete Guide

How to Unlock Base Building in Subnautica 2: Complete Guide

I surfaced next to the Lifepod and the Welcome Center sat dark, like a locked toolbox on a stormy night. My hands were slick in the water, and the build menu still felt out of reach. The ocean pressed like a question mark against the hull.

I’ve spent hours converting panic into a tidy base offline, and I’ll walk you through the simplest path to get access to base building in Subnautica 2. You’ll move faster if you treat this like a short scavenger hunt: craft a couple of basic tools, scan two prototypes, then fabricate the Habitat Builder and open the menu that lets you place corridors, rooms, and machines.

A cluttered workbench tells you what tools matter. How to build a base in Subnautica 2

First: you need the Habitat Builder tool in your Fabricator to access base pieces and furniture. The Fabricator contains the recipe only after you collect two blueprint components and the core tools used to scan them.

How do I get the Habitat Builder tool?

You’ll need two tools before you can scan those blueprint fragments: a Survival Multitool and a Scanner. I make the multitool as soon as I hit the beach; it’s cheap and removes a lot of friction.

  • Survival Multitool: Titanium x3
  • Scanner: Titanium x2, Quartz x2, Basic Battery x1

Glass (for later) comes from quartz. Basic Batteries require copper gathered from caves. Once those tools are crafted, you’re ready to find the two Habitat Builder prototypes and scan them.

Subnautica 2 Habitat Tool scans

Where are the Habitat Builder scans located?

The game kindly gives you a short tutorial: travel roughly 80 meters southeast of the Lifepod and you’ll find the Welcome Center. It’s out of power at first, but inserting a Basic Battery into the wall panel brings the Bio Lab and NOA online, and NOA explains base building briefly. I recommend following NOA’s prompts; they point you to the two physical scans.

  • Outside: next to the “Welcome Center” sign is a small metal box containing one Habitat Builder prototype.
  • Inside: dive into the hole in the center of the building’s floor to find a second prototype inside a metal container near the Oxygen Tunic.

Scan both components with your Scanner. Once both blueprint fragments are recorded, the Fabricator will present the Habitat Builder recipe.

Subnautica 2 Habitat Builder recipe

What materials are required to craft the Habitat Builder?

Once the blueprint appears in your Fabricator, craft the tool with these ingredients:

  • Titanium x2
  • Glass x1 (made from Quartz x2)
  • Basic Battery x1
  • Copper Wire x1 (from Copper)

Gather titanium near the Lifepod. Copper will take you into small caves; use the Multitool to pry open resource pouches on smaller fauna like the Acid Raion. Assembling the Habitat Builder felt like finding a carpenter’s blueprint in a flooded attic: messy, but exactly the map I needed.

Shelves in a hardware store are organized by need. All base building and furniture blueprints in Subnautica 2

Hold the Habitat Builder in your hotbar and press the Open Menu key (right-click on PC) to see categories: Base Pieces, Furniture, Power, Production, Plantables, Storage, and more. Scan items around the world to expand your options—NOA tips, wreckage, and other structures hide many recipes.

Here’s the complete list of buildable components and furniture you can craft. Use them to plan a compact survival hub, a research lab, or a showy base with a moonpool.

Recipe Ingredients
Corridor Titanium (2)
Room Titanium (5)
Hatch Titanium (1)Quartz (1)
Window Glass (1)
Nook Titanium (3)Glass (2)
Half Round Room Titanium (5)Glass (5)
Moonpool Titanium (5)
Recipe Ingredients
Dining Chair Titanium (2)
LabChair Titanium (2)
Stool Titanium (1)Rubber (1)
Dining Table Titanium (3)Glass (1)
Single Bed Titanium (2)Fiber (3)
S Shelf Titanium (2)
Trashcan Titanium (2)
Small Crate Titanium (1)
Sign Titanium (1)Copper (1)
Reaper Leviathan Titanium (1)
Recipe Ingredients
Pent Pent (1)
Macaron Sponge Fibrous Pulp (3)
Mimic Pylon Fibrous Pulp (5)Copper (4)
Freesia Flower Fibrous Pulp (3)
Acid Raion Medical Gel Sac (1)
Cradle Shootroot Lucifer Rotsac (1)
Necrolei Cyst Necrolei Cyst (1)
Cherimoya Rotsac Cherimoya Rotsac (1)
Recipe Ingredients
Solar Panel Titanium (1)Quartz (2)
Hydroelectric Turbine Titanium (3)Copper (3)Silver (3)
Thermal Plant Titanium (3)Copper (3)Gold (3)
Power Transmitter Titanium (1)Copper (1)
Recipe Ingredients
Fabricator Titanium (1)Copper (1)Quartz (1)
Processor Titanium (2)Mild Acid (1)Copper Wire (1)
Biolab Titanium (3)Copper Wire (1)Mild Acid (1)
Modification Station Titanium (2)Celestine (2)Copper (2)
Recipe Ingredients
Interior Wall Titanium (2)
Interior Arch Titanium (1)
Interior Door Titanium (3)Glass (1)Copper Wire (1)
Ladder Titanium (2)
Recipe Ingredients
Exterior Wall Light Titanium (1)Copper (1)
Spotlight Titanium (1)Copper (2)
Recipe Ingredients
Wall Locker Titanium (2)
Floor Locker Titanium (3)Quartz (1)
Tailing Chest Titanium (3)
Wall Rack Titanium (1)Copper (1)
Recipe Ingredients
Tailing Table Titanium (2)
Tailing Drum Titanium (2)Fiber Mesh (2)
Tailing Barrel Titanium (2)
Coral Jar Coral Shavings (2)
Small Coral Jar Coral Shavings (1)
Tailing Jar Fiber (1)Salt (1)
Hanging Tailing Jar Fiber (2)Salt (1)
Tailing Rug Fiber (3)
Recipe Ingredients
Small Axum Jar Glass (1)Copper (1)
Axum Jar Glass (1)Copper (2)
Tall Axum Jar Glass (1)Copper (3)
Recipe Ingredients
Habitat Beacon Titanium (1)
Recipe Ingredients
Small Ceiling Light Titanium (1)Copper (1)
Rectangular Ceiling Light Titanium (2)Copper (1)
Wall Light Small Titanium (1)Copper (1)
Wall Light Large Titanium (2)Copper (1)
Axum Wall Lamp Celestine (1)Titanium (1)
Recipe Ingredients
Keep Calm Poster Titanium (1)
Just Keep Swimming Poster Titanium (1)
Safety First Poster Titanium (1)
Scout Ray Poster Titanium (1)
Zezura Poster Titanium (1)
New Life Poster Titanium (1)
Painted Tree Poster Titanium (1)
Pioneer Program Poster Titanium (1)
CHBC Live Poster Titanium (1)
Lost River Poster Titanium (1)
Recipe Ingredients
Battery Terminal Titanium (2)Quartz (2)Copper Wire (1)
Power Cell Terminal Titanium (3)Copper (3)Wiring Kit (1)
Bioreactor Titanium Ingot (2)Copper Ingot (2)
Power Storage Germanium Ingot (1)Titanium (3)Salt (2)
Recipe Ingredients
Wall Unit Small Titanium (1)
Wall Panel Titanium (1)
Wall Unit Large Titanium (3)
Wall Vent Titanium (2)
Wall Vent Large Titanium (3)
Recipe Ingredients
Biobed Titanium (3)Glass (1)Copper Wire (1)
NOA Terminal Titanium (3)Glass (1)Copper Wire (1)
Scanner Station Titanium (3)System Chip (1)Wiring Kit (1)
Time of Day Display Titanium (1)Copper (1)Enameled Glass (1)
Recipe Ingredients
Portable Locker Titanium (4)
Beacon Copper (1)Titanium (1)
Portable Oxygen Generator Titanium (3)Lithium (2)
Work Light Titanium (3)Quartz (2)
Dive Elevator Titanium (4)Copper (2)Quartz (2)
Recipe Ingredients
Roof Pmp Titanium (1)
Roof Pump Double Titanium (2)
Roof Cylinder Titanium (1)
Roof Panel Large Titanium (2)
Roof Antenna Titanium (1)
Roof Antenna Large Titanium (3)
Roof Listening Dish Titanium (3)

If you want to expand beyond the basics, check the game’s Fabricator and NOA prompts for further recipes. On PC platforms like Steam and consoles such as PlayStation, the flow is identical: gather, scan, craft, and then place. Tools like the Multitool and Scanner are your first stops, and learning how NOA guides you will save time.

Ready to stop improvising with seaweed and scrap and build something that lasts—what will you place first?