Do note i am still working on this, i just wanted to get this info out quickly to help as many of you as possible, if you know something i dont ill add to the guide as i go, thanks!

All the rooms Currently. possible to build are

Workshop

Forge

Alchemist

Tailor

Jewelry

Prison

Library

Crypt

I dont wish to spoil myself by speedrunning certain bosses without my friend, so FOR NOW,
there are some benches i will not have pictures for, sorry :c
With that note out of the way, ill describe what i can for you all!

Ive heard there will be new stations and benches added in the fall, ill add those when they appear

Floor Types -
Most rooms will benefit from having a specific flooring tile.
The bonuses are always the same but are majorly helpful.
So the sooner you get them, the better in the long run!
Every room listed in this guide has a floor type of that room unless stated in the section.
You will unlock them from either the Research Bench or the Study with Paper or Scrolls.

How stairs work - OUTDATED - FIXING SOON[ish]
They MUST be placed on pre existing ramps, they act as a skin for them
Place borders up to the ramp, and THEN place the stairs from the border flooring
They act as a border space so youll need room for it to place them.

Tombs - Medium
Cant be placed on flooring but CAN be placed on Garden tiles

Sleeping Coffins - Large
These set a spawn point and can be put anywhere, but probably somewhere safe,
They also dont need a dedicated room

Storage ROOM - Optional
Not needed, you can just put items inside the output of machines as a storage box, or just boxes/bookshelfs inside the room for where they are needed but a central storage is easier for doing the quick "compulsively count" option.

Room Size - At LEAST a 2 x 2 tile placement size, for the throne itself.

This is a room that doesnt have any type of bonuses applied to it [so far]
and can be anything you want to have inside it, like storage!
Its a purely decorative area but must have the Throne in it.

Obviously lol

Picture soonish coming.

Room Size - Medium / Large

Grinders - How ever many you need to have speedy brick making,
Start with one then go to 2-4 if you want - Needs a 1x2 if you plan on enclosing it in a cube.

Sawmills - Again, how ever many, then 2-4 or higher - Fits in a 2x1 or a 1x2, same thing

Wood Workbench - No reason IMO so far, than needing more than 1 in a room - Fits in a 2x1

Room Size - Medium / Large!

Furnace - Start with 1, more if needed - 1x2, if trying to box in

Simple Workbench - Just 1, no need for extra unless you mass produce gear - 1x1

Smithy - Creates Iron gear! Only one needed. - 2x2, but i leave it open!

Anvil - Not currently in picture - Makes stuff, unsure, sorry! - 2x2 or a L shape

Room Size - Small / Large

Alchemy Station - Probably just one, unless you make a lot of potions. - Fits in a L shape or a 2x2

Blood Press - If you have a lot of rats or need quick high end blood, 2-4, otherwise just 1 - 1x1

Vermin Nests - Depending on server settings, as many as you want! - 2x2

But again! Open floor plans are good!

Room Size - Tiny / Huge!

Only thing in here needed are Servant Coffins - Spawnpoints for thralls.

How ever many servants you want, youll need that many coffins, so entirely up to you on size here.

You can fit TWO coffins in a 1x1

"Room" Size - Huge!

IF you want lots and lots of plants at your base, and you probably should have lots,
A nice central courtyard or many small around the castle would be great
Separate area for Trees perhaps, or use them as decoration with your benches around the garden - Huge
Make sure to have a Well for easy water if you arent near a lake/ river - Medium

This is a condensed garden, no trees with a well.


And this is a garden for primarily trees, and tombs.


Plant Sizes -

I will eventually list EVERY PLANT IN THE GAME here and the tiles they fit in.

Small Plants - Fit in a 1x1 easily

Cotton, Sunflower, Blood Rose,

Medium Plants - Only some fit in a 1x1

Blood Carrion,

Large Plants - Things like trees

Tree,

Room Size - Small / Medium

Depending on how many prisoners you want, all up to you for size,
Each blood type on hand would be ideal. So about 6-8

Room Size - Large!

Research bench - Until you have every paper research keep it in there, then as just decor - 1x1

Study - Fully unlock all scroll research then its just decor 2x2

I keep the Devourer in here too, but he can go anywhere you like! His size is 1x1

Athenaeum - Still just unlocks stuff - 2x2

Note : Not current accurate flooring.

Room Size - Large / Huge

Tannery - However fast you want your animal hide to be converted - 1x1

Looms - Probably a few, 1-4 maybe based on how fast you want it. - 1x1, Ill have to test that

Tailor Station - Used to make cloth apparel, only one needed 2x2 Gonna test

Note : Not current accurate flooring.

Jewelcrafting Table - 2x2

Makes Jewels! I assume, not sure how many are needed typically but probably just one?

Gem Cutting Table - 2x2 - Unsure on that

Cuts low quality gems into better ones, might need 2 of em