Walls that are able to keep out moisture and humidity from outside will make the building naturally cooler. Because of this, air-conditioning systems will not have to work so hard to cool down the building. This lowers electricity costs.

Solar heat gain coefficient is the amount of solar radiation that enters through glass and is released as heat inside a building. The lower the SHGC, the less solar heat it transmits, the cooler the building. This also lowers electricity cost because air-conditioning systems don't have to do all the work.

A device called an enthalpy wheel recovers cooled air from the inside and uses the coolness of this "spent" air to cool fresh air from outside. The process also dehumidifies the air from outside. This is a cost-efficient way to improve indoor air quality and lessen energy consumed by airconditioning systems.

This type of lighting system has sensors that can detect daylight. During the day, the sensor switches off the lights since there is enough light from the sun. When the sun sets, the system will switch the lights on.

This way, the use of artificial lighting during the daytime is reduced. It prevents cases when occupants are too lazy or forget to turn off the lights when they aren't needed.

This lighting system only turns on when it senses people in the room. This technology can also be found in escalators that activate only when there are people to ride on them.

The latest faucets and flush mechanisms use less water to do the same thing.

A structure catches rainwater and then stores it in big containers. The water can then be used to water plants, flush toilets, or supply cooling towers.

An MRF is where the building's garbage is segregated into biodegradable, recyclable, non-recyclable, and special or hazardous waste.

Biodegradable waste can be composted and used as fertilizer for the building's plants. Here is an example of a successful MRF in San Fernando, Pampanga.

A significant portion of the building's unpaved area should be devoted to vegetation. This helps reduce the heat urban island effect – when concrete surfaces so common in urban areas absorbs heat from the sun and radiates it to the surroundings.

Plants also help absorb some rainwater which would otherwise go to sewers and drainage, later on contributing to flooding.

Mandaluyong's ordinance requires that at least 50% of a building's unpaved area be planted with indigenous flora.

The building's design, construction. and operation practices should have minimum impact on ecosystems and water resources.

Five element of green building

1. Sustainable Site Design- Green construction considers not just the building but its environment.

2. Water Quality and Conservation– Maximize of water- use efficiency

3. Energy and Environment – Includes cost-saving opportunities

4. Indoor Environmental Quality - supports human health and wellbeing.

5. Materials and Resources

NON GREEN BUILDING – effect to environment, more expensive than green building and energy consumption.