Objective: The objective of this study is to reflect on the implications of accessibility in the urban planning of cities, since this is a legal issue ensured by the various legislation in force considering that accessibility is relevant not only for people with reduced mobility or wheelchair users, but also for those with temporary disabilities, the elderly, pregnant women, obese people among others. Method: The research is based on a qualitative approach using bibliographic review and documentary research procedures. Data interpretation is anchored in categorical content analysis. Results and Discussion: The results obtained provide an understanding of how legislation seeks to promote a better quality of life for everyone within a city, through the implementation of various laws and decrees, including those related to urban planning and city development. Therefore, urban planning presents itself as an indispensable element for the organization of a city in all its aspects, contributing to its development and orderly growth. This is because, without this planning, it becomes difficult to guarantee quality education, access to healthcare, adequate housing, leisure opportunities and employment for all citizens. Originality/Value: This study contributes to the literature by considering the importance of urban planning in achieving accessibility in cities, in this context, the importance of legislation in ensuring the well-being of all inhabitants of a city is perceived, by guaranteeing accessibility, along with other mechanisms, such as urban planning and related decrees. A change in lifestyles has been observed in relation to the rural exodus, with a greater number of people living precariously in cities, which has resulted in significant changes in their urban spaces