Suburb Crawling

I'm running a game on Sunday and want to try out some suburb crawling in The City.  I imagine a party exploring a vast, never ending plane of urban environments, setting out from their ramshackle rented apartment, causing trouble and working for the endless guilds.

There's no central authority in The City, so it's really like exploring the wilderness with buildings instead of trees.

Suburbs: 

Suburbs will be laid out on a a4 sheet like this. I'm going to sketch out 10 of them and pull out a random sheet. That's where the party starts. Each time the party moves into a new suburb, I just pull out a new suburb sheet. Party maps out an evolving city map as more suburbs are uncovered.

Suburb Map: 

Suburb maps will be simplified, more like a grid like point crawl.The party will move in a linear fashion along major through fairs. Details for going down alley ways and into tenements handled by  details of the suburb sheet.  Random encounters will be relatively numerous and may result in a Point of Interest, NPC or Monster.

Random Encounters:

I'm going to have 20 of each the following "visual random encounter" profiles for Points of Interest, NPCs and Monsters. I can embellish on them as they come up. They now "live" in the suburb they were encountered in.

Rules: 

Encumbrance and carrying stuff rules will be relatively strict. as will maintaining supplies and keeping fed.

The following rules will be used for accommodation. Sleeping in the street will lead to high random encounter chance.

STR rating for accommodation reflects the general strength of the accommodations security. This can be increased in accommodation owned (not rented) by adventurers via magic, renovations and the employment of guards.  

The suburb in which the accommodation is located may have a bonus or penalty to an accommodations base STR rating (reflecting well patrolled streets and lawful residents or abandoned streets and a population of criminals, amongst other things).

Renting:

• Alley Shack or Lean To, 5 gold a week, STR 5
• Wooden Apartment, 1 room, 10 gold a week, STR 8
• Stone Apartment , 1 room, 20 gold a week, STR 10
• Wooden Apartment, Several rooms, 50 gold a week, STR 8
• Stone Apartment, Several rooms, 75 gold a week, STR 10
• Top Floor of a Wooden Building, 100 gold a week, STR 10
• Top Floor of a Stone Building, 150 gold a week, STR 12
• Whole Wood Building, 200 gold a week, STR 12
• Whole Stone Building, 400 gold a week, STR 14

Buying:

• Alley Shack or Lean To, 500 gold, STR 5
• Wooden Apartment, 1 room, 1000, STR 8
• Stone Apartment , 1 room, 2000 gold, STR 10
• Wooden Apartment, Several rooms, 5000 gold, STR 8
• Stone Apartment, Several rooms, 7500 gold, STR 10
• Top Floor of a Wooden Building, 10 000 gold, STR 10
• Top Floor of a Stone Building, 15 000 gold, STR 12
• Whole Wood Building, 20 000 gold, STR 12
• Whole Stone Building, 40 000 gold, STR 14