Local neighborhoods often actively oppose infill and mixed-use projects based on concerns about the impacts of the new development, particularly related to traffic and parking, effects of additional population, and design of the project. 

Developers often avoid infill or redevelopment projects due to fear of reduced marketability, especially when compared with newly developed neighborhoods. 

Finance and capital markets can be a barrier to the infill developer as lenders are frequently more cautious to lend money for infill projects without a demonstrated local track record for the specific kind of infill development. 

Zoning for separate uses makes permitting difficult because of the practice of separating land uses and prescribing inflexible lot area, building setback, and other dimensional standards.

---