Part l compliance

One off house 2017

Just wondering if anyone can help me. Do I still have to achieve part L compliance if I don't have a mortgage? I got a DEAP done and it seems excessive and extremely expensive to follow through

sydthebeat

One off house 2017 wrote: »

Just wondering if anyone can help me. Do I still have to achieve part L compliance if I don't have a mortgage?

of course you do.
Complying with building regulations is not optional, and certainly has nothing to do with how you pay for your build.

One off house 2017 wrote: »

I got a DEAP done and it seems excessive and extremely expensive to follow through

welcome to house building in 2017

One off house 2017

How is it enforced then?

One off house 2017

150mm kingspan under floor
200mm kingspan in the cavity
0.5 u value triple glazed windows
Air to water heating system u/g heating
Solar panels etc
It just seems very excessive compared to what I have seen others using.

mickdw

Building Control here in Mayo at least are now getting to a high number of builds. Not the most difficult to deal with but Part L is first on the list and you do need to have construction details that relate to the Deap figures and they will check this through to a finish. You could get into a world of trouble by submitting compliant drawings at commencement and then going off and building to a poorer standard.

One off house 2017

It all just seems a bit over the top. Obviously I'm going to build it to as high a standard as I can as it is going to be the family home but I suppose there has to be a standard. It just seems a bit mad.

mickdw

It is possible to comply without going for air to heat system.
Underfloor heating would be pushing up the floor insulation requirement too.
Renewable is compulsory and solar panels are generally the cheapest way out of that.

sydthebeat

One off house 2017 wrote: »

150mm kingspan under floor
200mm kingspan in the cavity
0.5 u value triple glazed windows
Air to water heating system u/g heating
Solar panels etc
It just seems very excessive compared to what I have seen others using.

Yeah thats a completely ridiculous spec, there must be a mistake somewhere in the assessment.


Email me the xml and I'll take a look at it if you want.

B-D-P--

One off house 2017 wrote: »

150mm kingspan under floor
200mm kingspan in the cavity
0.5 u value triple glazed windows
Air to water heating system u/g heating
Solar panels etc
It just seems very excessive compared to what I have seen others using.

0.5 uvalue windows?? are you sure..
Renewable sources should be just one, I'm doing A2W.
Dont think whats cheapest now to get build done, as solar and underfloor aren't enough to keep a house Cosy.

A2W and underfloor are a good match,
Solar and rads with oil are a good match,
Solar and UFH with oil is not a good match.

Bubbling

One Off House 2017:
- Has the house received planning permission at this stage?
- Have a DEAP been completed based on the design?
- Who completed the DEAP?
- What does your architect / engineer who will be inspecting / certifying the works advise in relation to meeting the Part L and Part F requirements (heating system, levels of insulation, u-value of windows, ventilation design, cold bridge detailing, etc.)?
- Have you engaged an engineer to design and sign off on the foundations and structure?

Apologies for all the questions, but it will assist the forum in giving appropriate advice based on how far your development has progressed.

Orad

We have been thinking exactly the same thing!

We have started new build and are hoping to not require a mortgage.
Obviously we have an engineer to ensure everything is structurally sound.

However, I am struggling to justify being forced to spend on products/solutions to solely satisfy the Part L stats.

We are insulating to the hilt but are not convinced that Air-To-Water + underfloor is right for us.
However, it seems that without A2W it looks impossible to meet without over-specing everything else - triple-glazed, heaps of solar.

I suppose, my question really is - how it compliance ultimately enforced (when engineer signoff for mortgage is not required) ?

Gumbo

Orad wrote: »

I suppose, my question really is - how it compliance ultimately enforced (when engineer signoff for mortgage is not required) ?

Building Control Inspection.
You gave an undertaking on the Commencement Notice.
Your Engineer CANNOT ever sign off on the property.
You will never be able to sell the property.

sydthebeat

Orad wrote: »

We have been thinking exactly the same thing!

We have started new build and are hoping to not require a mortgage.
Obviously we have an engineer to ensure everything is structurally sound.

However, I am struggling to justify being forced to spend on products/solutions to solely satisfy the Part L stats.

We are insulating to the hilt but are not convinced that Air-To-Water + underfloor is right for us.
However, it seems that without A2W it looks impossible to meet without over-specing everything else - triple-glazed, heaps of solar.

I suppose, my question really is - how it compliance ultimately enforced (when engineer signoff for mortgage is not required) ?

there certainly are many other options apart from A2W

however you must realise that building in 2017 is not cheap. why do you think so many developers are slow to start building houses.

Our current building regulations are very onerous to meet, but they are the same for everyone. The problem is a lot of builders still think we're in 2007 in terms of specification and workmanship, when in reality we're so so far ahead.

Orad

kceire wrote: »

Building Control Inspection.
You gave an undertaking on the Commencement Notice.
Your Engineer CANNOT ever sign off on the property.
You will never be able to sell the property.

Thanks for that.
Last two points are most interesting.
But surely it would not actually prevent a sale...it would just require engineer to confirm that it is "substantially compliant" (as they do with countless old houses) or perhaps classed as an "unfinished building".
But point taken...would definitely complicate a sale.

Orad

Orad wrote: »

Thanks for that.
Last two points are most interesting.
But surely it would not actually prevent a sale...it would just require engineer to confirm that it is "substantially compliant" (as they do with countless old houses) or perhaps classed as an "unfinished building".
But point taken...would definitely complicate a sale.

Would someone buying it be able to get a mortgage on it?
If it isn't compliant you might be limiting yourself to cash buyers and limiting the value.

Orad

sydthebeat wrote: »

there certainly are many other options apart from A2W

however you must realise that building in 2017 is not cheap. why do you think so many developers are slow to start building houses.

Our current building regulations are very onerous to meet, but they are the same for everyone. The problem is a lot of builders still think we're in 2007 in terms of specification and workmanship, when in reality we're so so far ahead.

Thanks,
I am quickly learning of the 2017 building costs...scarey!
They certainly explain why many say it is still cheaper to buy than build.

All advice still seems to come back to A2W as the best way to meet regs...will have to keep investigating.

sydthebeat

Orad wrote: »

Thanks,
I am quickly learning of the 2017 building costs...scarey!
They certainly explain why many say it is still cheaper to buy than build.

All advice still seems to come back to A2W as the best way to meet regs...will have to keep investigating.

cheapest way maybe.... best way... very debatable

you dont want to be putting A2W HP with UFH into a house with Dg windows, no MHRV and poor thermal bridging detail.


work on the basis that the lower your heat energy demand, the less heat energy you need to provide, thus the less importance you need to give to your heat output system