This is something fundamental to the approach to his design...getting rid of or reducing prejudices of what a house looks like. Houses, along with all buildings to my mind, should be designed from the inside out...sort out the needs, wants, desires, must haves and so on with as few preconceptions as possible.For many this is impossible and undesirable, but it does help to free up the thinking at the early stages. Ask serious estate agents and they will tell you that, given a choice, more people will aim for a Recency rectory or Georgian facade above all else...they will ignore the fact that are most likely inefficient and draughty, but they display a sort of wealth or status...so be it, and I guess many want to display that in a self build.

Approached from the inside out you are unlikely to arrive at a symmetrical, balanced facade but you should end up with satisfactory and adjustable solution which will suit a site, and anyway unless you get the proportions right with the right window and even glazing bars it'll tend to look odd. Of course in your listings of must haves you may well have listed 'must look odd'...who am I or your architect to object.

In one of the only books I've come across by proven, excellent architects is The Place of House by Charles Moore, Gerald Allen and Donlyn Lyndon and others, written from a West Coast USA perspective, you can read between the lines and follow the principles. Very reasonably priced copies are available on ABEbooks.co.uk...I recommend it. I'll briefly summerise a chapter on house form or arrangement of rooms...all will become  clear.

1. Rooms bunched...Could be Georgian/Regency approach but tends to be the way many people build/live...almost a doll's House approach

2, Enfilade...a  military expression for a line or row...a row of rooms, interlinking or consolidated with small courtyards. An intriguing and inventive example of this is by  Peter Phippen of PR+P in Hatfield, Herts being only around 6m wide but a very long house, designed for a terrace. Google for a floor plan, as one sold relatively recently...indeed there is a bold estate agent that specialises in 'The Modern House'.

3. Rooms surrounding...the idea being rooms surrounding a garden or courtyard...as https://www.theguardian.com/lifeandstyle/house-and-homes-blog/gallery/2012/jun/15/homes-interiors

4. Pavilion...As it sounds, yet inevtably more geometric and dare I say symmetrical. This approach could lend itself to extensions of course...think of the advantages, access permitting...works can be carried out without interference with the workings of the existing house, until connection...more of this approach later.

5...Around the edge, this is a bit like a new home built on say two edges of a garden or plot, and on the boundary...a mix of points 2 and 3 really, which need imaginative approach to lighting and the blessing of neighbours.