The Westphalian is a large warmblood that typically stands between 15.2 and 17.2 hands and weighs between 1,100 and 1,400 pounds. A horse of this size requires a stall no smaller than 12 feet by 12 feet, though a 12-by-14-foot or 14-by-14-foot stall is strongly preferred. Larger stalls give the horse room to lie down fully, roll, and move comfortably without risk of becoming cast against a wall. Ceiling height should be a minimum of 10 feet to prevent head injuries when the horse raises its head suddenly.
Beyond the stall itself, adequate turnout space is essential. The Westphalian is an athletic breed that needs daily movement for both physical and mental health. A minimum of one to two acres of well-maintained pasture per horse is a reasonable guideline, though larger acreage is always better. Turnout paddocks should be free of hazards including holes, debris, broken fence rails, and toxic plants. Regular pasture inspection is part of responsible horse keeping.
Aisle widths in a barn housing Westphalians should be at least 10 to 12 feet to allow safe passage when leading or cross-tying. Doorways into stalls and the barn itself should be a minimum of 4 feet wide and 8 feet tall to prevent the horse from striking the frame when passing through. These dimensions account for the horse's full height, including head carriage, and provide clearance during moments of alertness or spooking.
Ventilation is a critical and frequently underestimated aspect of equine housing. Barns should provide adequate air exchange without creating direct drafts on stalled horses. Ridge vents, cupolas, and properly positioned windows allow stale air, ammonia, and dust to escape while bringing in fresh air. Poor ventilation contributes directly to respiratory conditions such as inflammatory airway disease, which can compromise a sport horse's performance and long-term soundness.