To accurately quote a cleaning job, you should consider the size of the property and the type of cleaning required. Typically, pricing is calculated based on the square footage of the space, multiplied by a predetermined rate per square foot, which can vary depending on the cleaning service's quality and location. For instance, basic cleaning for a 2,500-square-foot home might range from $200 to $250, reflecting a rate of approximately $0.08 to $0.10 per square foot. For more intensive services like one-time deep cleaning, rates often range from $0.10 to $0.30 per square foot. Additionally, factors such as the condition of the property, special requests, and accessibility should be considered to provide an accurate and fair quote to clients.