1. 1980s
   1940s
2. 1960s

Green building practices have been common in indigenous cultures worldwide for thousands of years, but the green architecture movement didn't start in the United States until the 1960s and early 1970s.

1. Certified Green Professional (CGP)
   Sustainable Building Pro (SBP)
2. Certified Green Contractor (CGC)

Construction and remodeling pros can become Certified Green Professionals (CGPs) through the National Association of Home Builders (NAHB).

1. 2014
   2011
2. 2012

The International Green Construction Code has been rolling out since 2009, and as of late 2010, a publication date of early 2012 was planned.

1. Colorado
   Texas
2. California

California was the first state to implement green building codes when it adopted the 2010 California Green Building Standards (CALGreen) Code.

1. City codes
   A review board
2. Both

New York City has a Buildings Sustainability Board to address green building issues not covered by the New York City Construction Code.

1. There is no rammed Earth code.
   Rammed Earth 101
2. The International Building Code

Adobe and rammed Earth buildings, as well as Earth or pressed-block construction, are covered within the International Building Code (IBC). Local regulations are available in many areas, as well.

1. Grade of timber
   Treated wood
2. Fire hazards

While treated wood is generally avoided in green building due to chemical release hazards, it is not usually an issue with code inspectors, but timber grade is. Having the grade of timber marked or recorded shows the strength of the wood itself and confirms the additional quality step of having the materials checked before building.

1. State and national
   National fenestration codes
2. National, local and state

While there are standards for fenestration (window placement and quality), solar building projects should include local, state and national code councils. Some local agencies may even require approval at the neighborhood, condo or block level before proceeding with designs that can infringe on neighboring properties or streetscapes.

1. The designer and builder
   The engineer and inspector
2. The builders and owners

Building professionals and owners are kept in check by inspectors and codes, and ultimately, the owner and those actually doing the work have responsibility for complying with codes.

1. Site sensitivity and impact
   Poor technology
2. Weak materials

Preserving a site without settling into it can be challenging in many locales. Green technologies and materials have come a long way, but the goal of doing the least amount of harm in the short and long term hasn't changed.

1. United States, Canada and Mexico
   Norway, Finland and Sweden
2. Germany, Italy and France

While most countries contribute to the developing green movement, Scandinavian countries such as Norway, Finland and Sweden in particular have been pioneers of green building and design and are sharing their knowledge with the U.S. Green Building Council for compiling global green construction standards.

1. Lewis Mumford
   Renzo Piano
2. Art Vandelay

While Lewis Mumford was a forerunner in writing about and envisioning green design, it is Italian architect Renzo Piano who is famous for integrating both green and high-tech elements into his architectural works.

1. Fire safety
   Financing
2. Termites

Straw-bale homes are considered no more fire or termite susceptible than traditional wood homes; termites actually seem to prefer wood. But banks are wary of lending on straw-bale construction, especially when local code enforcement may hold up permit approval for this non-traditional building type.

1. Uniform Building Code (UBC)
   American Building Code (ABC)
2. Residential Construction Code (RCC)

Although the Uniform Building Code (UBC) hasn't been published since 1997 and was replaced with the International Building Code in 2000, many state and local agencies still use UBC for determining code compliance.

1. Materials restrictions
   Concrete requirements
2. Steel requirements

Depending on location, materials like stucco and packed-earth designs won't be approved for construction unless they're significantly reinforced to protect against seismic damage.

1. Salvaged materials
   Insulating Concrete Form (ICF) components
2. both

Both of these materials have problems with age: one is too old and one is too new. Salvaged materials are great for reuse, but some wood has lead-based paint and other materials may not meet current standards for durability, for instance. ICFs and other newer materials aren't widely codified, so some inspections need to proceed slowly while issues such as wiring pass investigation.

1. Brown water cooking
   Gray water reuse
2. Black water treatment

While technologies for treating and reusing black and gray water are improving, brown water is usually the result of too much copper in the plumbing itself.

1. Upkeep costs
   Not seeing the promised savings
2. Durability and looks

Many who buy into green are sold on the idea and promises of energy savings, but aren't necessarily seeing the money add up. Guarantees of financial savings should be backed up by a reputable, proven green building professional, and not just a traditional builder or engineer who adds a few green elements here and there.

1. There is no green "between."
   Go green or go home.
2. A little at a time is fine.

Going "sort-of" green is a great place to start, and energy companies in many places lead the way with incentives for homeowners to make small improvements that add up. And sometimes when you start small, you get the green bug and want to keep going.

1. No, they were Arts and Crafts builders.
   No, it was before "green" was popular.
2. Yes, they used many elements of green design.

With a strong use of landscape elements and natural materials, brothers Charles Sumner Greene (1868-1957) and Henry Mather Greene (1870-1954) showed a lot of green sensibilities in their designs.