The Daily News of Massachusetts reports that officials in Salisbury are trying to include pre-HUD code housing that has not been moved in 20 years in their housing stock in order to meet the requirements for affordable housing under Chapter 40B housing laws of 1969.  The state has said in the past that that type of housing can be moved and, therefore, cannot be included. Salisbury has 8.6 percent affordable housing according to the state, but needs to have ten percent.  Town officials have had to allow developers build 40B housing within the city to meet the requirements, but with mostly negative results, according to Selectman Jerry Klima.  The Town Council has filed a home-rule petition request that voters will decide later this month before it is sent to the state legislature, requesting a change to 40B.  The request applies only to Salisbury, but could set a precedent for other towns if the state allows it.