While there's growing interest in eliciting situated playful interactions with technologies in different contexts, how these interactions might shape everyday spaces still needs to be fully explored. To address this gap, this article aims to guide the architectural spatial changes by exploring everyday playful interactions of technology-adopted users in domestic spaces. We present our contributions in a two-fold study: First, through an extensive diary study involving 13 technology-adopted residents in gated communities, where distinct boundaries offer increased opportunities for playful interactions, we identified four playful themes: (1) creating and expanding play-spaces, (2) balancing play and comfort, (3) intertwining imagination with spatial experience, and (4) gamifying household interactions. Secondly, by building on these themes, we outline three design implications to inform architectural design processes, aiming to translate everyday playful interactions into tangible spatial changes. These implications include adapting shape-changing and wearable technologies for playful flexibility, embedding new forms of communications within infrastructures, and turning homes into interactive entities with multi-sensory technologies. While these findings provide a starting point for exploring new architectural design possibilities in similar environments, further research with architects, policymakers, and design researchers in the Human-Computer Interaction (HCI) and Human-Building Interaction (HBI) fields is essential to actualizing these changes.