I Took This “Upside Down House” Idea and Tested the Real Costs

If you’d like help thinking through your own house, you can book your Home Improvement Workshop here: https://www.carldesign.co.uk/ In this follow-up to the Upside-Down House concept, I take the original idea and price it properly. Original Design Video here:    • I Had to Turn This House Upside Down to Ma...   Download the CAD floor plans here: https://subscribepage.io/uTEokH In the first video I explored whether flipping a tiny terraced house upside down — with bedrooms below and a roof-terrace living space above — could actually work. This video goes a step further and looks at the real-world implications: • How planning might view a roof terrace • What structural changes would actually be required • How much storage can realistically be built into a small house • And, crucially… how much it might cost I speak to a structural engineer about the roof and ceiling implications, and to a builder I’ve worked with for over 10 years to arrive at a budget cost for the project. The costs are broken down into broad elements (roof, services, kitchen, bathroom, terrace etc.) before being pulled back together into a single figure — because that’s how projects like this are typically priced in reality. This is design refinement, not a first sketch. Big ideas don’t arrive fully resolved — they’re tested, questioned, adjusted and costed as they develop. 💷 Costs & assumptions Costs shown are UK (South of England), 2025 Figures include VAT Pricing assumes one builder undertaking the full job, not individual trades priced separately Built-in furniture such as pull-out drawers, nook beds etc. are assumed to be DIY or bespoke joinery, and are not included A base “like-for-like refurbishment” cost is discussed to show what you might spend even without the upside-down concept ⚠️ Important disclaimer This video is for information and discussion only. Cost figures are indicative budget estimates, not quotations Structural discussion is general advice, not site-specific engineering Do not remove ceilings, alter roofs, or undertake structural work without professional advice specific to your property Planning outcomes vary by location and authority — nothing shown guarantees consent Always consult a qualified architect, structural engineer, and builder before carrying out any work.