If your profession is somehow related to real estate floor plans, our software Perspective Pilot might help you a lot. In particular if you use to make photos of floor plans. Architectural drawings that are photographed usually come with distortion:
Perspective Pilot, with its “Four-points perspective correction” tool will help you to correct the floor plan. Open the image in the program. Select “Four-points perspective correction” tool from the Tools panel and point the four corners of the largest distorted rectangle in the image:
Click the “Apply” button. Result: