Bread and Buildings Progress Cards
[Download progress card document]

General Rules
Below you will find new rules expanding the progress card rules from The Cities and Knights of Catan, to include 2 new commodities, produced by refining bricks and grain, and the same way that you can refine wood, sheep and ore. The rules can be used alongside the 3 original commodities, creating a game with lots of progress cards. Alternatively, you can use the 2 new commodities, bread and buildings, to spice up your game, by replacing one or two other commodities for a single game.

Components
Via the link above you will reach a Word document, containing the 18 building progress cards and the 18 bread progress cards. These should be printed on coloured paper and cut out, to create the 2 card stacks. The file also contains 2 pages of blank cards, to represent your bread and buildings commodities. Not much to look at, but it'll get the job done.

The Calender
You'll also need something to represent the progress "calender", for your bread and buildings progress.
We normally use a big die for each. The die is turned to show which rolls will give you progress cards, just like the dice pictured on each of the calender leafs. Advances are paid for in the normal manner - i.e. you start on level 0, and pay 1 commodity to get to the first level (which produces cards on a 1 or a 2), then 2 cards to get to level 2, 3 to level 3, etc.
As with the other commodities, you get a special ability once you reach level 3, and you get a metropolis when you reach level 4.

If you are using more then 3 kinds of commodities in a single game, only 3 metropoli counters may be in play. Note that in this case the move to the final level will trump any level 4 metropolis. So, if three level 4 metropoli exist (paper, cloth and coins), and one player manages to get either buildings or bread to level 5, he may remove the metropolis counter of his choice, and take it for himself.

Special Abilities
This is the special ability gained when reaching the 3rd level of bread progress:
Craftsmanship: Your settlements may choose to produce commodities instead of resources.
[Note that this does not allow your cities to produce 2 commodities, and the commodity produced still has to match the tile].

This is the special ability gained when reaching the 3rd level of building progress:
Architecture: You may pay 3 ore and 2 bricks to build a settlement on top of a city.
[Only 1 extra settlement per city. The settlement follows all the normal rules for settlements, and still requires a settlement piece].

Using Bread and Bricks
The cards can be used either to replace the original commodities, or to be added to them.

4 or 5 commodities: Add in one or both of the new commodities. To not undermine the value of the original commodities, this will mean that some rolls produce 2 kinds of commodities at the same time - potentially resulting in a lot of card play. This can be a lot of fun, but may not be to everyones liking.
Simply put, a Blue City roll on the event die will now produce both Bread and Cloth progress cards - and a Yellow City roll on the event die will produce both Coin and Building progress cards. A green roll will still only produce Paper progress cards.

3 commodities: Before starting settlements are placed. Take and shuffle 2 ore, 2 sheep, 2 wood, 1 brick and 1 grain card. Shuffle these, and deal out 3 cards. If you get any duplicates, shuffle and try again. The 3 different resource cards that you come up with signifies which resources can be refined into commodities for this game.
If you play in this way, then some the following progress cards will be defunct, because they produce a commodity not used in your game: Artisans, Bakery, Mine, Paper Mill, Weaving Mill. In that case, the player is allowed to discard the card, and draw a replacement card immediately.

The Pirate Ship
One of the new cards requires the use of the small black pirate ship from the Seafarers expansion. This means that if you are using the new progress cards, then the pirate ship should not be used in the way described in Seafarers - i.e. as a second Robber. I highly recommend that you never use the second robber rules - even if you don't use the new progress cards.
The reason for this is that having 2 robbers in the game allows players to keep one of the robbers on a specific tile, by always moving the other robber when a 7 is rolled. One of the good things about the original 1-robber-rule was that the robber had to move every time a 7 was rolled, allowing the blocked player a little respite every now and then.

Have fun!