Conservatory base and planning permissions - How to build a base

[yourgardenworks.co.uk]

Alright Folks,

How would I go about building a base for a floor to ceiling type conservatory, no dwarf walls, just upvc.

Is there an online guide I could maybe follow somewhere, or could somebody explain, Mainly I'm not sure on how to finish the walls, as the upvc will sit directly on the floor... and will i need planning permission, the dimension are approx 4 m x 4m x 3m high.

Many thanks

J.D

[seanandruby]

Most of the conservatory suppliers will have a spec for their type of structure.

[GB_Groundworks]

Mainly I'm not sure on how to finish the walls, as the upvc will sit directly on the floor

so your unsure how to finish the walls or floor?

are you shuttering reinforced walls or are you talking about a simple slab say 150 or 100, or maybe a ring beam, but as sean says there will be a spec from the supplier.

just finish level and go round with an arising trowel then they'll just fix it to the base.

[seanandruby]

Approximately 60% of conservatories built will require planning permission.

Under the present legislation you may not require planning permission providing you meet with the following conditions:

* No more than 50% of the land which surrounds the "original house"* can be developed. If you require a conservatory that covers more than 50% planning permission is required.
* If the proposed conservatory faces any road, planning permission will be required.
* Maximum depth for a conservatory on a detached property is 4000 mm
* Maximum depth for a conservatory on a semi deched property is 3000 mm
* The maximum height of a conservatory is 4000 mm
* Conservatories built to the side elevation of a property a maximum of 4000 mts high and no more than 50% that of the original house
* At least 50% of area that will form the external boundary / edge of the conservatory must be glazed and 75% of the roof area to be covered with either glass or polycarbonate.(Building regulations)
* All conservatories must be separated from the house by an external quality door, patio door or French doors. (Building regulations)

Conservatories on listed building, national parks, Broads Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites planning permission will be required.

* The term "original house" means the house as it was first built or as it stood on 1 July 1948 (if it was built before that date).

Even if you may not have had an extension built to the house, a previous title-holder may have done so.

The above mentioned only applies to extensions after the 1 July 1948.

We have listed some additional information and conditions which attract planning permission:

* If you build within 2m of the boundary line and the highest point at that junction is 4m or more high.
* If your conservatory covers more than 50% of the original garden.
* If your planning development rights have been removed.
* Grade II listed buildings. These may require a hardwood conservatory with a glass roof.
* Where a conservatory is 20m or less from a road or public footpath.
(see sketch A)

Conservatories Planning Permission Information

Sketch A: Irrespective of the size of the conservatory, should the distance between points A and B be less than 20m planning permission may be required.

Shaded Area may be any of the following:

* Road
* Highway
* Motorway
* Public Foot Path
* Bridal Way
* Access to another property
* Access to other garage

Impact onto the Boundary Normally the local planning officer will be looking at the projection of the conservatory i.e. how far it will protrude into the garden, normally they are happy at about 3m projection from the original house. However, should the proposed conservatory extend more than 3m he may not look at it so favourably and ask for it to be reduced in size? The reason for this is so your neighbour does not have to look at a large brick wall more than 3m long. Hence the term impact onto the boundary.
Conservatories Planning Permission Information

[mickg]

info here on how to build a conservatory dwarf wall

the other way is to form the shape of the conservatory using timber shuttering and to pour the concrete floor, the down side to this method is the face of the concrete will be visible underneath the conservatory sill but its a cheaper and faster way to construct the base when using full height frames and no dwarf wall

[lutonlagerlout]

I have done over 50 bases for local window firms and generally no planning permission or building regs are needed,as long as its under 4M high and there are external doors from the house to the conservatory
however if in doubt ask
i stopped doing them because too many corners were being cut,other lads were only digging footings 300 deep,no insulation etc etc
good luck
LLL

[darrenba]

Here's one that we built last year - not quite conventional due to the ground height. As stated above you need to be within certain limits to avoid planning permission. This one didn't need it. It's approx 3.8m wide and 4.0m deep.

How to Build a Conservatory Base

[lutonlagerlout]

nice tidy job there darren,i used to go 750mm deep,deeper if they wanted high walls(most window firms seem happy to have loads of parapet walls 2.4m high,it saves them on windows)
but of course with no regulations you can go 100mm deep if you want
I know 1 guy who i wont name in public (harry weir) who built a conservatory straight off a patio, he was stamping on the council slabs in front of the client saying "solid,they will never move"
btw since i met a lad with a pump i always use a pump gang for the floor screed, they normally charge £150 and do it on the way home from their bigger jobs
the big advantage of the pump is that you cant knock any frames with the barrow,which i am sure none of us has ever done :;):
regards LLL