There are plenty of excellent insulation materials on the market today. Many of these have been around for quite some time. Each of these insulations have their own ups and downs. As a result, when deciding which insulation material you should use, you should be sure to be aware of which material would work the best in your situation. Considering differences like R-value, price, environmental impact, flammability, sound insulation and other factors, here are the 5 most common types of insulation materials:
The 5 most common types of insulation on the market.
Urban infill may be a viable solution for cities seeking to build tighter communities by utilizing space to its fullest potential. Conscious implementation of developments on underutilized land may be an effective sustainable agent that reduces daily vehicular travel time and the resulting environmental byproducts. 
Developing innovative solutions within an existing city layout may be one of the challenges faced by some cities when accommodating for growing populations. It can be time consuming and expensive for a city to rework its pre-existing urban infrastructure. Rather than retrofitting the city’s public transportation infrastructure, it seems to be more feasible for a city to create an innovative solution in collaboration with pre-existing developments. 
Entitlement is approval from governmental agencies to use or develop a parcel of land. Approval may depend on many factors—including the building’s use and size, appearance, historic status, and environmental impact—overseen by separate agencies. The process is especially complex in cities, where land is scarce and land values are high, which makes development a risky proposition. Development means change, and there are many who resist change, often for valid reasons. Opinions are strong. In such challenging circumstances, the most effective tool for gaining approval is a good design. 
The 2016 Edition of Title 24, the California Building Standards has become effective as of January 1, 2017. The codes are revised every three years and are in conjunction primarily with the Code Change Cycle for the International Family of Codes and other Standards.
The California Legislature recently passed new rules making it easier, faster, and presumably less expensive, for people to get permits for new “granny units” otherwise referred to as “accessory dwelling units” (“ADUs”). Senate Bill 1069, which was signed by Governor Brown on September 27, 2016 and takes effect on January 1, 2017, amends Government Code section 65852.2 to require local agencies statewide to amend their zoning ordinances to implement several uniform development requirements and restrictions on ADUs – both substantive and procedural.
Every three years, the California Energy Commission (CEC) revisits its energy efficiency standards, augmenting the building code to align with recent technological advancements and the state’s new efficiency goals. The commission underwent this process again this year, identifying areas for improvement in both new construction and retrofits for residential and nonresidential properties.