Is this correct?

[Jonh-000]

I’m trying to calculate an estimate of how much the build of a 3 bedroom, 300 square meters, home would cost. I excluded the cost of land since it varies greatly depending on the location. My dream home would look like this: https://i.pinimg.com/736x/ba/78/59/ba7859ff2a4379a61ee51cc2b2c8b663--townhouse-exterior-modern-townhouse.jpg

 

1. Electricity/telephone: £10,000
2. Water/sewers: £5,000
3. Drainage: £10,000
4. Gas: £3,000
5. Foundation: 300 square meters*£150= £45,000
6. Columns: 300 square meters= 40 columns*£400= £16,000
7. Cladding: £5,000
8. Bricks: £1,000
9. Blocks: £10,000
10. Plastering: £5,000
11. Flooring: 300*£12= £5,000
12. Electricity: £10,000
13. Plumbing: £20,000
14. Heating: £5,000
15. Carpentry: £5,000
16. Tiling: £3,000
17. Roof: £5,000

 

Total: £160,000

 

Is this correct? Have I calculated some of the costs wrong? Have I missed any other major costs?

Edited December 13, 2022 by Jonh-000
Grammar

[Kelvin]

You’re miles out I’m afraid even if you were doing all the labour yourself and plus your costs are a bit all over the place. There are no costs for windows or a kitchen/util room for example. What about MVHR? 
 

There are plenty of posts on here about build costs so have a search.
 

Right now build costs have probably never been higher for certain materials albeit some material costs are reducing. If you went with £2500/m² you would be in a better ballpark figure but there are so many variables. 

Edited December 13, 2022 by Kelvin

[Jonh-000]

10 minutes ago, Kelvin said:

You’re miles out I’m afraid even if you were doing all the labour yourself and plus your costs are a bit all over the place. There are no costs for windows or a kitchen/util room for example. What about MVHR? 
 

There are plenty of posts on here about build costs so have a search.
 

Right now build costs have probably never been higher for certain materials albeit some material costs are reducing. If you went with £2500/m² you would be in a better ballpark figure but there are so many variables. 

Could you link me to a post with build costs please?

Edited December 13, 2022 by Jonh-000

[Kelvin]

https://forum.buildhub.org.uk/search/?q="Build costs"&updated_after=any&sortby=relevancy&search_and_or=and

[ProDave]

You would be doing exceptionally well to self build for £1000 per square metre.  That would put your build cost at £300,000  We just got under £1000 psm finishing a couple of years ago and doing 5 years of a mostly DIY build.

 

Most are now saying with the price rises since then that you would do well to achieve £2000 per square metre, I will let you do the maths on that figure.

[SBMS]

I’m afraid you are miles out really. There was a thread a while back which was ballpark costs for a 300m2 build which I shared a lot of breakdown of our costs on:

We are just getting watertight and are roughly coming in on the original budget - so our original was £1650 per sqm which is managed by a primary contractor so we are doing really well! We secured all prices beginning of year and it’d probably be nearer 2k per sqm now. Which is still reasonable. And ours is a square chocolate box brick and block, so relatively easy to build (be your aspirational pic which has more complex detailing I think)

[Seren161]

All the replies above are true.. We are coming to the end of second fix and on course for £1900 per square metre for a main contractor build.

Your estimated costs above probably cover materials only.

 

[Temp]

12 hours ago, Jonh-000 said:

My dream home would look like this: https://i.pinimg.com/736x/ba/78/59/ba7859ff2a4379a61ee51cc2b2c8b663--townhouse-exterior-modern-townhouse.jpg

 

I agree with others. The design also has quite a few features like the cantilevered front that add to the cost and complexity. 

[Roundtuit]

14 hours ago, Jonh-000 said:

I’m trying to calculate an estimate of how much the build of a 3 bedroom, 300 square meters, home would cost.

Is that correct?  300 sq m is pretty big for a 3 bed house.

[Conor]

2 minutes ago, Roundtuit said:

Is that correct?  300 sq m is pretty big for a 3 bed house.

Thinking the same. Ours is a 5 bed plus an office / games room and is 315m².

 

A three bed would be more like 180m².

[Kelvin]

8 minutes ago, Conor said:

Thinking the same. Ours is a 5 bed plus an office / games room and is 315m².

 

A three bed would be more like 180m².

Depends how you organise things. Our design is 202m² and two bedrooms.  Upstairs was designed as two bedrooms but we’ve changed that to a bedroom and an open plan sitting/dressing area (open plan from the stairs) Downstairs there’s a guest room and shower room. There’s a study as well that could be used as a bedroom in the future.