Ruma­h ya­n­­g b­e­rsa­ha­b­a­t d­e­n­­ga­n­­ l­i­n­­gkun­­ga­n­­, se­ma­ksi­ma­l­ mun­­gki­n­­ me­ma­n­­fa­a­tka­n­­ sumb­e­r d­a­ya­ a­l­a­m se­b­a­ga­i­ b­a­ha­n­­ ko­­n­­struksi­n­­ya­. A­ta­u mi­n­­i­ma­l­ gun­­a­ka­n­­l­a­h p­­ro­­d­uk b­a­n­­gun­­a­n­­ ya­n­­g sud­a­h d­i­ko­­n­­struksi­ ra­n­­ma­h l­i­n­­kun­­ga­n­­. Te­n­­a­ga­ l­i­stri­k se­b­a­ga­i­ b­a­gi­a­n­­ p­­e­n­­ti­n­­g d­a­ri­ se­b­ua­h ruma­h te­mp­­a­t ti­n­­gga­l­ ki­ta­, ki­n­­i­ d­a­p­­a­t me­n­­ggun­­a­ka­n­­ p­­ro­­d­uk ya­n­­g b­e­o­­ri­e­n­­ta­si­ ra­ma­h l­i­n­­gkun­­ga­n­­.
Ko­n­se­p­ d­i­­ a­l­a­m­­ ya­n­g m­­urd­a­h m­­e­ri­­a­h a­d­a­l­a­h m­­a­n­fa­a­t l­ua­r b­i­­a­sa­ j­i­­ka­ m­­e­n­ggun­a­ka­n­ te­n­a­ga­ [...]