Design of Passive and Energy Efficient Houses

At Passive House Builders Ltd. we have put in place a number of steps we follow during the design stage of our work. We feel they are logical and give PHB, the customer and architect a chance to gain a better understanding of the project in hand. Regular communication is essential throughout each step between PHB, customer and the architect.

	Step 1: Initial Contact Once initial contact has been made with PHB, information is supplied to the prospect client regarding their choice of house either a Passive or Energy Efficient house. This facilitates a better understanding of the type of house they wish to build. It is important to distinguish the distinctive differences between both types of houses.
	Step 2: Visit to site This step usually involves a face to face meeting to discuss requirements and to access the proposed site. From this visit, PHB can establish the orientation of the proposed building, quality of the site and its surroundings.
	Step 3: Initial Design Based on information received, PHB will make the client aware of their options in terms of either a Passive/ Energy Efficient house. An initial design of the house is then prepared in conjunction with the client, architect and PHB. PHB can advise on orientation, solar optimisation, window position and internal layout.
	Step 4: PHPP software Once agreement has been reached between the customer and PHB to proceed with the project, the plans are then inputted into PHPP software to establish the energy values of the house. This involves entering the u values of the walls, floors, roof and windows as well as the orientation of the house and its size. Changes can be made to the design at this stage if the current requirements are not being met for Passive standards. There is ongoing consultation with the client at all stages.
	Stage 5: Planning Permission Construction drawings are then prepared for submission for planning permission. Once planning permission has been granted a more detailed set of drawings will be prepared for use in the construction of the house. This is a critical element in the process of building and if not planned correctly it can lead to serious problems at a later stage in the project. Decisions in regard to ventilation, water heating, air tightness and cold bridges will be made at this stage.