Fence and Gate
  Level Costs in island dollars
Fence 2 4,500
  3 420,000
  4 1,200,000
     
Gate 2 5,100
  3 460,000
  4 1,300,000
   
 
Field & Orchards
  Level Costs in island dollars
Field 1 20,000
  2 80,000
  3 350,000
  4 1,700,000
     
Tree Grove 1 60,000
  2 150,000
  3 700,000
  4 3,500,000
     
Berry Orchard 1 78000
  2 195,000
  3 910,000
  4 4,550,000
     
Sheep Pasture 1 100,000
  2 350,000
  3 1,500,000
  4 8,000,000
   
 
Stables
  Level Costs in island dollars
Penguin Pool 1 25,000
  2 100,000
  3 500,000
  4 2,500,000
     
Seal Pond 1 60,000
  2 150,000
  3 700,000
  4 3,500,000
   
 
Processing and special buildings
  Level Costs in island dollars
Stone mill 1 15,000
  2 60,000
  3 800,000
  4 5,000,000
     
Viking Workshop 1 Already built
  2 400,000
  3 2,500,000
  4 15,000,000
     
Algae Tank 1 30,000
  2 150,000
  3 850,000
  4 2,500,000
     
Silo 1 25,000
  2 130,000
  3 950,000
  4 6,500,000
     
Viking Vault 2 25,000
  3 55,000
  4 120,000
  5 350,000
  6 850,000
  7 2,300,000
   
 
Housing
  Level Costs
Farm House 2 240,000
  3 1,200,000
  4 5,500,000
     
Simple House 1 10,000
  2 95,000
  3 350,000
  4 1,000,000
     
Fancy House 1 250
  2 2,800
  3 4,850
  4 6,500
   
  courtesy of Larino's Corner: spreadsheet