The main obstacles are: that these buildings rely on the sun for energy, they need a privileged location that facilitates access to sunlight and may require sometimes placed in the opposite side of other homes.

The problem of the lack of materials needed to build this building is sometimes difficult to obtain, especially in urban areas where the preservation of the environment is not the first option for its residents.

 These buildings also work on heat to generate energy, so they are not designed for hot areas because they do not have any systems to cool the air, so there will be a need for air conditioners, which will make these buildings not related to the concept of "close to the environment."

The main obstacles are: that these buildings rely on the sun for energy, they need a privileged location that facilitates access to sunlight and may require sometimes placed in the opposite side of other homes.

The problem of the lack of materials needed to build this building is sometimes difficult to obtain, especially in urban areas where the preservation of the environment is not the first option for its residents.

 These buildings also work on heat to generate energy, so they are not designed for hot areas because they do not have any systems to cool the air, so there will be a need for air conditioners, which will make these buildings not related to the concept of "close to the environment."

The lack of information, cost, lack of incentives, lack of interest and demand, and lack of GB codes and regulations are the most reported barriers.

For more informations please check this link:

http://onlinelibrary.wiley.com/doi/10.1002/sd.1651/abstract

REGARDS

Cost in the short term.

Dear Ales Kralj most appropriate answers.

I am with Gujarat Technological University, Gujarat State India and take care of E-Course on Green buildings in Smart Cities along with many other duties as Dean of Interdisciplinary research.

In my country the barriers are many.

The important barriers of Green building are

1. Initial higher cost.

2. The investor is not fully aware of lower operating cost and does not have complete reliance about operating costs. There is a lack of awareness.

3. Buyers for green buildings are few and valuation market does not grow adequately.

4. The man power having techniques, knowledge and skill for green construction is not available and capacity building needs to be strengthened amongst investors.

5. No consolidated law on green building exist. No Government policy exist to promote green buildings. Certification systems LEED and GRIHA exist. The building code and ECBC also exist but are not completely implemented. Probably in the next five year plan green building may get momentum

I go with Dr Sheth

As per Dr Sheth- precise answer

Barrier 1: Builder Incentives

The benefits of green buildings, especially in energy savings and worker productivity, accrue over the long term. While agreement is nearly unanimous that green buildings are cost-effective, the benefits accrue to the final owners and users of the building, and not to the builder. Additional costs incurred by developers cannot be easily passed on to owners.

The study identifies this financial disincentive to builders as the single most important obstacle to the "mainstreaming" of green building. The challenge is to create a structure that allows some of the value of the long-term benefits to be transferred to the builder to offset first-time costs.

Barrier 2: Product Information and Sourcing

Respondents lamented the scarce and poorly accessible information available on green products and high-performance building systems.

The lack of information about performance and cost attributes of building elements can force projects to depend on specialized consultants. Alternatively, designers and builders risk costly call-backs to remedy green products that don't perform well.

Another consequence of limited product information is skepticism from municipal building and safety departments. High fly ash content concrete was cited as an example of a useful product currently stymied by official skepticism. Green products can only deliver their air quality and energy conservation benefits if regulators allow them to be used.

All participants confirmed that, once a product becomes mainstream, product information barriers are quickly overcome. The challenge is to get the information in the first place.

Barrier 3: Client Knowledge

A common theme for private sector participants was the "customer-driven" nature of their projects. Architects, contractors, and developers all agreed that clients' desire to incorporate green elements into their building projects is an essential element in overcoming the time and cost barriers inherent in adding these features.

To support green clients and convert new ones, participants identified a need for credible evidence of the advantages of green: case studies of green building materials and performance, long-term studies of the value of environmental effects resulting from building materials and operations, fiscal studies of capital and operating cost increments for green features, and research on the impact of green building design and construction techniques on occupant productivity.

Another aspect of the client knowledge barrier pertains to codes and regulations. As the regulation of building design and construction becomes increasingly complex, developers and clients have difficulty assessing the costs and requirements of complying with regulations. When regulations require modification of a building design or site plan, clients sometimes conclude that the green specifications have caused these costly delays.

Improved communication of local building codes and their implications for green process and product choices would allow developers and clients to make choices among efficiency, aesthetics, product choice, and cost that would satisfy regulators without costly delays and changes.

https://www.greenbiz.com/blog/2001/11/01/barriers-building-green

Sharing link:

https://www.google.es/url?sa=t&source=web&rct=j&url=https://www.greenbiz.com/blog/2001/11/01/barriers-building-green&ved=2ahUKEwiqz5aGgdrZAhXBxVkKHXQFCmgQFjAAegQIBxAB&usg=AOvVaw2yPCs8tvB43D69G9bBXFo1

Regards!