Bathroom remodels tend to cost more per square foot than almost any other room, largely because of the concentration of plumbing, waterproofing, and fixtures packed into a relatively small space. Waterproofing deserves the largest share of attention despite being invisible in the final result, since a poorly waterproofed shower or bath area can lead to costly hidden water damage years down the line. Fixtures — the toilet, vanity, shower system — are where most of the visible budget goes, and it is often worth spending slightly more here since these are touched daily and cheaper versions tend to show wear quickly. Ventilation is frequently overlooked but critically important, since inadequate extraction leads to mould growth over time, particularly in humid climates. When comparing contractor quotes, ask specifically whether tiling is priced per square foot including labour, since tile costs vary enormously and complex patterns significantly increase installation time and cost. For smaller bathrooms, a well-planned layout that maximises storage and light often improves the daily experience more than expensive finishes, making it worth prioritising function over pure aesthetics when the budget is limited.