air filters for domestic use; air filters for air cleaning units; air filtering units for removing dust, smoke and allergens from the air; air filtering units for reducing radon gas concentrations from the air; air filters for heating, ventilating, and air conditioning (HVAC) systems for residential and commercial buildings; filters for air purifiers; filters for drinking water; water filtering units for domestic use; filters for water purifiers;

providing consumer information and advice on the selection of products and items to be purchased for use in the building of residential spaces;

construction and renovation of residential and commercial properties; construction project management services; supervision of building construction; residential and building construction consulting; supervising and managing building construction and site development; providing advice and information in the field of environmentally sustainable building practices; general building contractor services; installation of radon mitigation systems; installation of HVAC systems; real estate development; planning, development, and construction of residential buildings;; providing a construction-upgrade to new homebuyers comprising low VOC (volatile organic compound) paints and sealants for better indoor air quality, air filtration and ventilation systems that reduce allergens and stale air, additional operable windows for fresh air flow, and soil gas mitigation to reduce penetration radon; installation of low VOC (volatile organic compound) hardwood flooring; installation of water-saving water fixtures; installation of insulation in residential housing; installation of sensors in residential housing to monitor the levels of pollutants and allergens;

interior decoration consultancy; interior design; providing certification of quality assurance in the construction industry; providing scientific information, advice and consultancy relating to carbon offsetting; home inspection and surveying to verify the condition of a property;