Cat Enclosure & Shed Conversion

I’d like to turn the two pergola-covered side passages of my home into functional spaces. On the left-hand side the goal is a secure outdoor cat enclosure. I want the existing pergola posts and roof retained; you’ll wrap the sides in strong mesh so the cats can see out yet stay protected. The concrete slab that’s already there remains as the floor, so no extra groundwork is required. Inside, please build in a few fixed climbing platforms and a cosy sleeping nook that can handle the weather. The right-hand side will become a simple, lockable storage shed. Again, keep the current pergola frame but enclose it with durable, weather-resistant panels, add a solid door, and fit basic shelving so boxes and garden tools stay dry and organised. I’m after a clean, professional finish that matches the house exterior, with all cuts neat, fixtures rust-proof, and no sharp edges exposed. Once both areas are enclosed, I should be able to step back and see two tidy, purposeful spaces that look like they were always part of the property. Let me know your timeframe and how you plan to execute the conversions.