It's a big decision, indeed. DIY can save money but requires a significant amount of time and skill. On the other hand, professionals bring expertise and efficiency, albeit at a higher cost. I stumbled upon an article that breaks down the pros and cons of both options
https://welovebrighton.com/lifestyle/diy-vs-professional-house-extensi which might help you weigh your options better. It's essential to consider your skills, budget, and the project's complexity before deciding.