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That will be a thick *ss wall If I remove the need for plaster and use paint grade blocks as @PeterW suggested this would save some internal space

50mm?

Assuming 2 walls @ 42sqm that would be £1k for boards, havent done the figures for all 4 timber walls + insulation yet

Neighbour works for a window company, can get really good prices

Good thoughts on this, not sure a 2 storey would go well with the planners, but thats for the future I guess @PeterW, you mean double skin 100mm blocks with cavity insulation?

This was one of my concerns in terms of cost, as at least 2 walls would have to be clad fire resistant

There is a high closed panel gate in the entrance Rendered block was up on my list, but single skin would require some good 100mm insulation?

Thanks for the suggestions. I have taken the provision for drainage into consideration, this will be on my list for sure Currently this is the floor plan:

Hi @PeterW thanks for your reply once again ! There is no finish specified, the initially proposed garage also had no finishing materials specified. But it would be white render to match the builds. £15K needs to include all ? ☺️ Just so everyone knows, there is no building where the proposed plan will go

If this post is in the wrong forum, feel free to move it! I am completely stuck on what way I should go with my “garden office” build. Maybe on my previous posts asking for help I wasn’t clear enough on my objective so I decided to write this post in detail and looking for the forum members help to guide this on the right direction. First of all, below is a site plan of my plot to have an idea of the layout. The plot is 40m x 20m, the new builds are parallel to each other, and the “garden office” will sit at the front of property B. I call the project “garden office” simply because thats what the current use the building will be: My work-from-home office (away from my 2 little ones yelling constantly inside the house while I work! ?) and a place for my preferred hobby: Play my keyboard and bass ??? Due to the size of the plot, the plan for the distant future is to convert this into a 1-bed / granny annex. This will of course be up to planning to decide, but hey, Im getting old and I need to think for the future, maybe this is where I will live when the kids are bigger and want to keep daddy or mummy near them. Currently (and members that have replied to my previous posts here and on e-build may be familiar) I went for approval for a 8m x 6m garage, originally I had a 6m x 4m and managed to get the increased m2 and height. But to be honest, the garage idea was a mistake, I wouldn't be parking cars in there anyways.I have got plenty of space to satisfy the LA requirement for parking spaces. So I went for a variation of a condition (cheaper) to get the new plan approved, below is the proposed new layout and elevation plans: My case officer has been very nice and helpful about it all, since the day we applied for the new builds, and he suggested the site layout above, the current application is on going and I have no concerns of if not being approved. Unlike my house build which was a turnkey solution (however all external work so far had my hands in it ?️) I want to make this a complete DIY project, however my limited skill-set is what is keeping me from deciding the best route for this as I am willing to do the majority of the work (along with my brother in law). A bricky friend has also made himself available. Apart from stuff like electrics, which I will have to get a specialist to do. Currently I have no plans to install any drainage or gas, only electrics. So everything else, plastering, external rendering, painting, roof we are up for the challenge. Foundations No clue yet! This will be dependant on the shell! Roof One thing right now is certain, a warm flat roof very similar to the one below is what I want to go for: https://www.youtube.com/watch?v=X2oHYzh5PaE&t=20s I-joists to the rescue with that 6m span ? Outer Shell One of my main concerns is keeping it nice and warm during the winter (and future), and this is what is really keeping me stuck: to decide which method to go with the outer shell taking into consideration current building regs and the future. I have spent countless hours reading about concrete blockwork, clay blocks, ICF, timber, SIPs, and tried my best to work out the costs involved when choosing any of them. Budget is also a key point: I don’t plan on spending more than £15k on the project. I did budget for £20k but going DIY should hopefully make the 15k figure more or less what I want to spend! So, I am really looking for guidance here on this, Im humble enough to accept the forums input, and want to make this nearly 100% DIY, so can you all help me out?

Hi, away for the weekend. Yea, future plan is to convert this into a 1-bed, hence the need for concrete walls initially

The actual dimensions would be 8.36 x 6.26, so I got some room for sure

Single skin

We could convert this into a type unit in the future.

Hi @ProDave, I have definitely taken the mobile route into consideration (from the previous thread), but I find it hard for me to build a structure myself that would satisfy the council as a mobile structure. The ones I have chased are quoting really absurd prices for the size I need to go with. Also to build it myself in timber would be much harder as I have my brickie mate to do the work nearly free.... will be insulating the block wall internally of course.

Hey guys, thanks for the feedback, yes I go over the 30m2 rule, so B.C is required. I am just trying to find the most affordable foundation method without spending so much, I was just trying to understand why with no specs of the wall fabrication, the BC officer said I had to go 1m deep. I have not commissioned him yet to do the work (he was only involved in my house BC) . I just cant believe walls of concrete Blocks 225mm x 450mm, 2.7m high would need to go this deep.... just trying to find other people's experience with this My plan is to hire a ready mix and pour myself with my builder friend (he will build the frame for the concrete pour) just trying to find the affordable way but still go wit the rules!

I may as well get my Structural Engineer involved then

Hey all, me again Have decided to go "DIY" route with my garden office, after chasing so many people, absurd quotes and people not really bothered to get back to you when may potentially be a client, I think I will do most the work myself except for the specialised bits like electrics, doors, windows. A brickie mate of mine will lend a helping hand laying the 4 concrete block walls, and the last bit, foundations. On a previous thread, I had asked about an initial query with the B.C. that was responsible with my house build regarding the foundations for this building (I didnt even mention what materials I would use for the walls) and his reply was: "If the building was a garage the proposed footings would suffice, if the building is for another use full strip footings of at least 1 metre depth are required." I think this is really over the requirements, or is he correct? It would be 2 walls of 6m and 2 of 8m in length, 2.7m high probably Thanks again everyone!

Thanks guys for the feedback, looks like I will have to make a brand new app. I wanted to avoid BC, they will required a more expensive slab for sure, and the BC fee too ?

Hi @PeterW That is perfect, thank you very much.....this makes it a bit more understandable now. I guess I would find difficult to prove this. but still amazed how companies such as: http://www.valuemobilehomes.com/floorplans/ Can build houses this big and still get away with them being "mobile"

Back in February I had asked the planing officer about changing that to a log cabin, but I ended up giving up on that. his reply was that, they could not accept this change as a non-material amendment as it will result in changes to the external appearance that would materially alter the appearance of the building. After reading the PDF MobilePlanningGuide, I thought that the certificate would allow me to station a "caravan" on my site (the caravan being the structure). This is what I really didn't understand, am I prohibited to station a caravan when no PD is there.

Hi all, thanks again for your feedback, Im being thick or what…. What I am basically trying to understand is this: If on my planning condition they have removed PD, so I am not allowed to station a caravan on my site at all???

Being there?? I already moved in last year!! If thats what you mean....

Thanks for the feedback, But the Lawful Development Certificate is in respect of stationing a mobile home in my property.... what does that have to do with Permitted development? Im missing the point.

Thanks for the replies guys, @PeterW I have abandoned the idea of a garage, as I plan to make the space for office work, I would definitely have issues with garage doors (and they also would be a bit of money). I am thinking perhaps on going the route @ProDave has suggested with a mobile home (I actually have the application for a lawful certificate ready) but I just want to be sure if I have permitted development rights or not before going ahead with the application (£270) Making it "mobile" would not be that hard, actually this structure would not be bolted to the slab anyways Appreciate any more input on this