Passive house experienced contractors in south east London

[WisteriaMews]

Does anyone have any recommendations for passive house experienced builders that operate in south east London?

 

We are hoping to issue our tender soon for the house we're aiming to build to a certified passive house standard. We'd ideally like a contractor experienced in the passive house approach so they are across all of the necessary airtightness and thermal bridging requirements etc....

 

I've looked on the Passive House trust and AECB websites, but south east London seems to be a bit of a desert for registered contractors!

 

We have spoken to one contractor who has sent someone on the PH contractors training course, but they have never done a passive house project.

[MikeSharp01]

MBC is very well regarded in the timber frame space and they are national. 

[WisteriaMews]

We have a timber frame company hopefully lined up (MBC weren't interested due to our foundation design). We're searching for a follow on contractor that will know how to install windows to a passive standard, wont puncture lots of holes in the air tightness layer and just generally buy into the concept of what we're doing.

[Post and beam]

On 12/11/2025 at 13:01, WisteriaMews said:

experienced in the passive house approach

If i were going for full on Passive house i would not entertain any contractor that did not have a long track record of doing so. And a list of satisfied customers.

Although i am very happy overall with my new house (not passive) i can say that not a single contractor actually did exactly what they said they would. 

[Mr Punter]

On 12/11/2025 at 18:49, WisteriaMews said:

MBC weren't interested due to our foundation design

 

Did or could they suggest an alternative foundation design?

[WisteriaMews]

6 hours ago, Post and beam said:

If i were going for full on Passive house i would not entertain any contractor that did not have a long track record of doing so. And a list of satisfied customers. 

I'd love that to be the case, but if there are no experienced passive house contractors in my area what can I do? (Hence the post on the forum trying to find a suggestion my research might have missed.)

[WisteriaMews]

6 hours ago, Mr Punter said:

 

Did or could they suggest an alternative foundation design?

We're a bit complicated with a timber frame sitting on a basement. Our basement design has ended up a certain way through working with the structural engineer and a contractor to keep the cost down. MBC have their timber frame design and the way it transfers the load through the frame wouldn't work with our basement design per their standard details. They didn't seem interested in doing things differently and I didn't want to work so badly with MBC to try convince their structural team we could find a solution.

Edited 8 hours ago by WisteriaMews