I'm currently diving into the requirements for installing solar panels on my roof as a DIY project in England, particularly regarding the structural aspects covered by Building Control. I believe that since I'm adding a load to my roof, I'd need to go through the Building Control process under Part A. I'm confident my roof can handle the extra weight, but I want to ensure I'm meeting local requirements. Typically, if I were using an MCS installer, they would handle this, but I'm considering DIY. I've discovered it may be necessary to get a structural engineer to confirm my roof's capability and submit that to the Building Control department, which could cost hundreds of pounds. I've heard some DIYers skip this step, which makes me wonder if that's common, especially given the extra costs involved. I've already contacted my local Building Control for clarification, and while I'm waiting for a response, I'd love to hear your thoughts on the matter! I did get a response indicating that for my situation, I might not need a submission, which could simplify things, but I'm still cautious about potential issues in the future without an MCS certificate.
2 Answers
If you're putting solar panels on the roof, you typically need to get that Part A sign-off. A lot of DIY projects tend to go for ground mounts because they're easier to manage and legally safer. Remember that without an MCS installation, you might run into headaches when it comes to insurance and property value down the line. It's also important to make sure any electrical work is up to code; if you're doing it yourself, you'll need to have the relevant sections signed off, which could be tricky.
In most cases, yes, solar panels on roofs are considered permitted development, but I'd still caution against a DIY roof installation unless you’re fully confident. An MCS installation generally protects your investment. If you ever decide to sell, future buyers could be daunted by a non-MCS setup. I did a DIY installation for my garden, which I can maintain easily; it cost me around £4000 for a full setup. Just keep in mind you'll need an electrician for any work on the consumer unit, which adds to your costs.
Exactly! I thought about going the DIY route too but ended up finding it might cost me more in the long run once I considered everything like fees and insurance issues.

I completely agree! The initial savings might look good, but when you figure in all the hidden costs plus potential future issues with home value, it might not be worth the risk of doing it yourself. Plus, installers often have access to better prices and tax benefits.