Island Hideaway Structures

There are three building categories for the Island Sanctuary. They are "Cabin & Fields", "Processing Facilities", and "Landmarks".

Cabin & Fields

Cabins

The hideaway can have one Cabin, unlocked at Sanctuary Rank 1. The Cabin allows players to sell gathered items for those Islander's Cowries () and Seafarer's Cowries (), as well as spending those currencies for attire, hairstyles, minions, mounts, etc.

Upgraded Cabins unlock upgrades for the Pasture and Cropland.

Building	Unlock Rank	Build Time	Island EXP	Materials
Cozy Cabin I	1	None	750	10   Island Palm Log 10   Island Palm Leaf   5   Island Vine   5   Island Stone   5   Island Sand
Cozy Cabin II	4	None	1,755	10   Island Log 10   Island Vine 10   Island Limestone   5   Island Palm Leaf   5   Island Copper Ore
Cozy Cabin III	7	None	2,565	10   Island Log 10   Island Limestone 10   Island Cotton Boll   5   Island Hemp   5   Island Clay
Cozy Cabin IV	13	None	?	15   Island Palm Log 15   Island Iron Ore 10   Island Coal 10   Island Spectrine 10   Islewort

Cropland

The hideaway can have one Cropland, unlocked at Rank 2. The Cropland allows players to grow Produce from Produce Starters (seeds or sets).

Upgraded Croplands provide additional plots for produce, and allows automation at upgrade III.

Building	Unlock Rank	Build Time	Island EXP	Materials	Maximum Crops
Cropland I	2	None	0	Free	5
Cropland II	4	2 hours	0	1,000 Seafarer's Cowries	10
Cropland III	7	4 hours	0	1,500 Seafarer's Cowries	20

Pastures

The hideaway can have one Pasture, unlocked at Rank 2. The Pasture allows players to gather Leavings from animals.

Upgraded Pastures hold additional animals, and allows automation at upgrade III.

Building	Unlock Rank	Build Time	Island EXP	Materials	Maximum Animals
Pasture I	2	None	0	Free	5
Pasture II	4	2 hours	0	1,000 Seafarer's Cowries	10
Pasture III	7	4 hours	0	1,500 Seafarer's Cowries	20

Processing Facilities

Workshops

The hideaway can have a maximum of 3 Workshops. Two are available when Workshops unlock at Rank 3, and the third becomes available at Rank 5.

Each workshop allows mammets to create handicrafts, which are exported for Seafarer's Cowries () when completed.

Upgraded Workshops increase the value of their handicrafts.

Building	Unlock Rank	Build Time	Island EXP	Materials	Effect
Workshop I	3	None (first) 1-2 hours (others)	1,425	10   Island Log 10   Island Palm Leaf 10   Island Limestone   5   Island Vine   5   Island Sand
Workshop II	6	6-7 hours	2,300	15   Island Log 15   Island Limestone 10   Island Hemp   5   Island Clay   5   Island Copper Ore	10% higher yield of Seafarer's Cowries
Workshop III	8	11-12 hours	2,760	15   Island Iron Ore 15   Island Leucogranite 10   Island Log 10   Island Hemp   3   Raw Island Garnet	20% higher yield of Seafarer's Cowries
Workshop IV	14	11-12 hours	5,225	15   Island Marble 15   Island Coal 10   Island Iron Ore 10   Island Log 10   Island Spectrine	Increases the value of handicrafts produced by this Workshop by ??%.

Granaries

The hideaway can have a maximum of 2 Granaries, both of which are available when Granaries unlock at Rank 5.

Each workshop allows mammets to go on expeditions to forage for various Normal materials, and a fixed amount of Rare materials which cannot otherwise be gathered on the island.

Upgraded Granaries yield more Rare materials from expeditions.

Building	Unlock Rank	Build Time	Island EXP	Materials	Rare Material Yield
Granary I	5	1-2 hours	1,425	10   Island Palm Log 10   Island Log 10   Island Clay 10   Island Copper Ore   5   Island Vine	2
Granary II	6	6-7 hours	2,300	15   Island Palm Log 15   Island Log 10   Island Hemp   5   Island Clay   5   Island Tinsand	3
Granary III	8	11-12 hours	2,760	15   Island Log 15   Island Iron Ore 10   Island Leucogranite 10   Island Clay   3   Island Spruce Log	4
Granary IV	13	11-12 hours	4090	15   Island Palm Log 15   Island Coal 10   Island Mythril Ore 10   Island Marble 10   Island Spectrine	5

Landmarks

The hideaway can have a maximum of 4 Landmarks. The first Landmark plot becomes available at Rank 4, second at Rank 5, third at Rank 7, and fourth at Rank 9.

Each constructed landmark increases the maximum Workshop Groove (to 15/20/25/35). Workshop Groove improves the value of Workshop Isleworks Handicrafts.

Building	Unlock Rank	Build Time	Island EXP	Materials
Quixotic Windmill	3	11-12 hours	??	15   Island Log 15   Island Limestone 10   Island Palm Log   5   Island Vine   5   Island Copper Ore
Towering Tree Fort	3	11-12 hours	??	15   Island Palm Log 15   Island Log 10   Island Limestone   5   Islewort   5   Island Vine
Boiling Bathhouse	5	11-12 hours	1,995	15   Island Log 15   Island Log 15   Island Limestone 10   Island Clay 10   Island Palm Leaf   3   Island Clam
Lominsan Lighthouse	9	11-12 hours	2,460	15   Island Leucogranite 10   Island Hemp 10   Island Log 10   Island Clay   3   Island Silver Ore
Water Otter Fountain	9†	11-12 hours	??	15   Island Leucogranite 15   Island Limestone 10   Island Clay 10   Islewort   3   Island Alyssum
Gamboling Garden	?	11-12 hours	1,620-2,460	20   Island Log 10   Multicolored Isleblooms 10   Island Leucogranite 10   Island Vine   5   Island Alyssum

† A Water Otter Fountain Permit is required for the construction of the Water Otter Fountain. The Water Otter Fountain is not required to fill all Landmark slots.

This permit can be obtained from the Horrendous Hoarder in The Cozy Cabin in exchange for the following items (from Level 90★★★ Expert Crafting, requires Master Recipes X books):

Items Required for Turn in	Crafted by	Materials to Craft 2x Items
2   Water Otter Fountain Hardware		2   Igneous Glioaether 4   Bismuth Ore 2   Phrygian Gold Ore
2   Water Otter Fountain Resin		2   Aqueous Glioaether 2   Dynamite Ash 2   Sideritis Leaves
2   Water Otter Fountain Lumber		2   Verdurous Glioaether 2   Red Pine Log 2   Snow Flax 2   Saiga Hide

Pathfinder Hideaway Expansions

The Pathfinder mammet expands the land available in the hideaway for constructing Processing Facilities and Landmarks. They are marked as on the map.

Pathfinder	Unlock Rank	Build Time	Island EXP	Unlocks	Materials
Pathfinder Mk I	1	None	??	Facility I & II slots	Free
Pathfinder Mk II	4	None	??	Landmark I slot	Basic Mammet-sized Builder's Tools   500 Seafarer's Cowries
Pathfinder Mk III	5	None	??	Facility III & IV slots Landmark II slot	Better Mammet-sized Builder's Tools   1,000 Seafarer's Cowries
Pathfinder Mk IV	7	None	??	Facility V slot Landmark III slot	Best Mammet-sized Builder's Tools   1,500 Seafarer's Cowries
Pathfinder Mk V	9	None	3,280	Landmark IV slot	Bestest Mammet-sized Builder's Tools   3,000 Seafarer's Cowries

References

u/Sewer-Rat's Island Sanctuary Comprehensive Guide

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Island Sanctuary

Animals • Crafting Log • Hideaway Structures • Isleworks Handicrafts
Materials • Produce • Stock Stores • Tools

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Island Hideaway Structures