Axle capacity of Gross Vehicle Weight Rating (GVWR) of the trailer should exceed the anticipated weight of your finished tiny house. As a general rule of thumb, a Finished tiny house weighs on average 500 to 550 lbs per linear foot of trailer length. So a finished 24ft Tiny House will average about 12,000lbs to 13,200lbs including the weight of the trailer. So the ideal trailer you buy should have a capacity that exceeds that estimation. Keep in mind, the finished weight of a tiny house varies greatly by design so you finished tiny house may be lighter or heavier than that estimate so plan accordingly. It is always better to buy more trailer than you need rather than less. Our Axles capacities come in 3500lbs, 5200lbs, 6000lbs and 7000lbs. The axles will always come in pairs, for a 7k Gross Vehicle Weight Rating tiny house trailer it will consist of (2) 3500lbs axles. a 10k Gross Vehicle Weight Rating tiny house trailer will consist of (2) 5200lbs axles. A 12k Gross Vehicle Weight Rating tiny house trailer will consist of (2) 6000lbs axles. a 14k Gross Vehicle Weight Rating tiny house trailer will consist of (2) 7000lbs axles. A 15k Gross Vehicle Weight Rating Triple Axle tiny house trailer will consist of (3) 5200lbs axles. A 18k Gross Vehicle Weight Rating Triple Axle tiny house trailer will consist of (3) 6000lbs axles. a 21k Gross Vehicle Weight Rating Triple Axle tiny house trailer will consist of (3) 7000lbs axles.