本研究以桃園市為研究範圍，探討建築基地面積規模與都市發展趨勢之關聯性。隨著都市擴張與土地取得困難，如何有效掌握建築開發型態與空間結構變化，已成為都市規劃與 建築管理之重要課題。過去研究多聚焦於樓地板面積或容積率等指標，惟易受容積獎勵與法令政策影響，難以反映基地實質開發規模與土地整合情形。 本研究彙整桃園市2013年至2023年建造執照資料，依據基地面積劃分為小型（≦500平方公尺）、中型501~3000平方公尺 ）與大型>3000平方公尺）三類，透過趨勢 率分析、案件占比統計與空間圖資整合，描繪各基地規模於各都會區之發展變化。並輔以專家訪談，補充制度觀點與實務驗證。 研究發現，小型基地發展重心逐漸由核心區（桃園區、中壢區）外移至邊陲地區中型基地於觀音區、大園區、新屋區展現明顯成長趨勢；大型基地則集中於楊梅區與新屋區等具腹地條件與政策誘因之區域。整體呈現「由核心向外擴張」、「由小型向中大型基地轉換」的結構性變化。 研究成果可作為未來土地整合政策、建築發展誘導與都市空間治理規劃之參考，並提供學術界觀察都市擴張與區位變遷的新視角。;This study investigates the relationship between building lot size and urban development in Taoyuan City. Given the challenges of urban expansion and land acquisition, understanding development scale and spatial patterns has become a key issue in urban planning. Unlike traditional indicators such as floor area or FAR, which are affected by incentive policies, lot size offers a more stable basis for analysis. Building permit data from 2013 to 2023 is classified into small (≦500m2), medium (501～3,000 m2), and large (>3,000 m2) lots. Through trend analysis, spatial mapping, and expert interviews, the study identifies key development patterns. Results show small-lot development is shifting from urban cores to outer districts; medium-lot growth is significant in Guanyin, Dayuan, and Xinwu; large-lot projects concentrate in Yangmei and Xinwu. This reflects a structural shift toward outward expansion and larger-scale development. The findings provide useful insights for future land policy, development planning, and urban governance, offering a new perspective for analyzing spatial change.
