Home Extension Cost: Step-by-Step (2024)

[@spookyleopard2263]

Thanks! Very helpful video 👌can i have the excel doc?

[@Tee-pn1dv]

Very useful video. Appears a lot of work went into it. Thanks!

[@bryandonoghue3141]

Very useful video Scott, thanks. I’m currently pricing builders for a kitchen extension (based in NI). We’re knocking through an existing wall (galley Kitchen) into an old fashioned side return for a more open plan look. Size of job is probably 2/3 of this. 5 x 1.2 is the size of side return. The first quote I received back was 53k….I couldn’t believe it. I know building materials are expensive but I didn’t imagine it would be over 50k…..hoping a local trusted builder can come in with a lower quote and I can reduce cost by taking on a lot of the interior works myself (qualified years ago as a commercial pipe fitter). This video has given me hope. Cheers

[@betaplanltd5967]

Thank you, yes, that sounds expensive for a 6m2 extension. Good luck.

[@efy5aru]

Excellent video mate. keep it up plz.

[@robseward01]

brilliant video , very helpful.

[@JulyFighting]

Hi, Great video and presentation. Could you update the spreadsheet link as it doesn't seem to work anymore?

[@faizfaiz6892]

Appreciate all the time and effort thats gone into making such detailed video. Hope you make more of these, e.g wrap around, Annexe e.t.c

[@betaplanltd5967]

Thank you. kzbin.info/door/ICdoJGKszAcHQNKKC9gTcw my channel.

[@yousefrostami]

VERY HELPFUL WITH DETAILS AND EVERYTHING

[@davidwinter1746]

Thank you. Really interesting.

[@SunilNair]

Thank you for the detailed explanation. Is SIP walls a good replacement for brick walls? Thanks

[@betaplanltd5967]

Thank you, SIP is a good method. A little more specialist than standard brickwork but good alternative.

[@tonyslimmings696]

Excellent detailed video.

[@betaplanltd5967]

Thank you.

[@prestigecapture7079]

Hi, can I download the spread sheet please thanks

[@yousefrostami]

GREAT JOB MATE

[@darrenmackenzie1892]

Im looking to build a small extension on to my barratts house glamis design. The kitchen patio doors would be where the extension would start. I want to be able to build enough space for a family dinning table. Any ideas what ud be looking at price wise?! I am a plumber by trade i would do the electrics and plumb in a new radiator.

[@betaplanltd5967]

This video gives you an approximate meter square cost.

[@IPHOUSING]

Thanks for the video, its very clear. But the Spread Sheet link seemed not working? Could you kindly check it please?👍

[@betaplanltd5967]

Thank you I will check this.

[@impamiizgraa]

I want to build a 15m2 shell like this and in London, I am so upset how expensive it is.

[@arslanakram732]

VERY GOOD VIDEO PLEASE TELL ME HOW TO DOWNLOAD SHEET

[@betaplanltd5967]

Thank you, I should have the spread sheet down load up soon.

[@navdeepmahajan2366]

Very detailed video. I was looking for something like this for a long time. Thanks a lot for taking time to create this. PS: the sheet link does not work.

[@betaplanltd5967]

Thank you.

[@russnunn2456]

Do you need planning to go up a floor on top of already existing single story extension house is semi detached and the extension wall is the boundary so no chance of two metre rule

[@betaplanltd5967]

No, you would need planning, if it doesn't meet the requirements.

[@AlexGnok]

What software are you using for these designs?

[@betaplanltd5967]

SketchUp

[@prestigecapture7079]

I paid 280 for skip and 95 for cube of concreate

[@Carl-hs420a]

Damn, that's expensive!

[@w.o.o.d.y]

You're getting concrete for £80 a cube ?? and a builder skip for £195..and screed for £20 a cube... your sand in the calculation above was £75 a cube !! other items on here that don't ring true either. Suggest you look at these costs again !! I know you put this as an estimation but hey, get real please !! ( there is no way planning would allow a flush finish extension either...it would have to be subservient to the main building at both ends.) Love the presentation though, cheers.

[@betaplanltd5967]

Thanks for your comment, in my error I was supposed to change the screed price, but overlooked it. In terms of the conc, I found prices ranging from £80-120 per cube (see the foundation conc). It was difficult give a 100% accurate cost for that as project will probably done a different way each time with pumped conc or barrowed in conc, ready mix or mixing on site. As mentioned in the video this is a desk top exercise with info gathered from the web, so am happy to stand by what I have found. Sand blinding for example is £75 per bulk bag in Wickes. I found several skips around the £200 mark for an 8 yard builders skip. Again, how the excavated material is disposed of on site is different for each project. The aim of the video is to give a fair insight into approx costings involved. In respect of planning (not that this is aimed at going through planning rules) this design would be acceptable up to 4m in depth under Permitted Development on a detached house, flush with the sides (assuming the PD rights are in place and it is not in a conservation area, AONB or a listed building). If an extension is off the original house (rear elevation in this case) it would be compliant with PD rights. Subservience is not generally mentioned in the context of PD rights, as to be inline with PD requirements by default things are generally subservient. My link to PD rights, in this circumstance. kzbin.info/www/bejne/nmjXdZyZoZmlnJYsi=17xjKUlIjDeI1HXu

[@AlexGnok]

can't comment on other prices but in the area where I live a 8yard skip (with an access door as well) is £180, so price in the video is quite accurate