Design Governance at Every Scale: From $8B Portfolios to £300k Transformations

Sean Auld — Design Director | Chartered Architect (ARB/RIBA)

There is a quiet assumption in our industry that the skills required to govern a billion-dollar portfolio have nothing in common with the ones needed to extend a family kitchen. That the person who orchestrates design frameworks across six neighbourhoods and forty consultancies somehow operates in a different discipline entirely from the one who stands in a half-demolished living room, studying where the light falls at four o’clock in the afternoon.

I have done both. And I can tell you: the thinking is the same.

The House That Waited

We moved in during July 2022. The house had been home to an elderly couple for many years — people who had clearly loved the place but had been unable to maintain it in their later years. The bones were good. The spaces were not.

The rear of the house was divided into three small rooms: a kitchen, a dining room, and a utility space. Each was sealed from the other by solid masonry walls. The kitchen looked inward. The garden existed beyond a small window, as though it were somebody else’s property. There was no flow. No connection between the rhythm of family life and the landscape just a few metres away.

We had found our home. Now we needed to make it ours.

The Ambition

The brief was deceptively simple. Open the rear of the house entirely. Remove the walls between kitchen, dining, and utility to create a single generous space. Extend outward by four metres. And then — the move that would define the whole project — install an eight-metre-wide, three-panel sliding door system that would dissolve the boundary between interior and garden.

The rear garden had been heavily overgrown for years. Lime trees and large bushes obscured the space, making it unmanageable and impossible to see the true size and potential of what lay beyond the house. The garden existed, but only in theory. It was hidden behind decades of neglect.

We wanted to bring the outside in. Not as a design gesture, but as a way of living. To reveal what was there. To cook breakfast with the morning light uninterrupted. To watch the children move between kitchen table and lawn without a threshold to negotiate. To feel the seasons change from inside the room where we spend most of our waking hours together. The extension and the landscaping were not separate projects — they were parts of a single act of reclamation.

The total construction value was £300,000. A fraction of the portfolios I have governed professionally. But the governance challenge, in its own compressed way, was remarkably familiar.

Structural Surgery

This was not a simple extension. It was, in structural terms, major surgery.

The entire rear wall of the property had to come down. The upper floors needed temporary propping while a full ten-metre-wide steel goal-post structure was installed to carry the loads above. Where internal masonry walls were removed to create the open-plan layout, steel trimmer beams had to be threaded in to support the solid walls continuing on the floors above. And then a second goal-post structure — eight metres wide — was engineered specifically to carry the enormous span of the sliding door system.

Two goal-post structures. Multiple trimmer beams. Temporary propping. A structural engineer coordinating load paths through a house that was, for several weeks, held together by steel and careful sequencing.

I have overseen structural coordination on projects worth a thousand times this budget. The principles were identical: understand the load paths, sequence the demolition, protect the occupied zones, verify every connection before removing temporary support. Scale changes. Discipline does not.

Building the Team

I self-certified as architect — preparing the design, managing the planning and building control submissions, and coordinating the consultant team. A structural engineer developed the steelwork design. A sustainability consultant ran the thermal performance calculations to ensure compliance with Northern Ireland’s energy regulations. A main contractor was appointed through negotiation and took responsibility for coordinating all sub-contractors on site.

Building control was administered by the local council, with their inspector attending at each critical stage.

This is, in miniature, the same multi-party coordination model I have operated at portfolio scale: clear roles, defined interfaces, a single point of design authority ensuring that technical compliance and design intent remain aligned throughout delivery.

Regulatory Compliance as Design Logic

There is a tendency to treat building regulations as an obstacle — a series of boxes to tick before the real work can happen. I have never found this to be true. Regulations, properly understood, are a design framework. They encode decades of collective knowledge about how buildings perform, how energy behaves, how people stay safe.

The sustainability consultant ran the thermal calculations — heat loss, U-values, the regulatory thresholds that separate adequate from excellent. We specified triple-glazed aluminium window and door systems throughout, with trickle ventilation integrated into every opening unit. The extension was constructed in full cavity blockwork, with external board-on-board western red cedar timber cladding wrapping the new volume and incorporating a feature recess along the long elevation.

For heating, we made a deliberate long-term decision. Electric underfloor heating was installed throughout the entire ground floor — not connected to the legacy oil-fired boiler, but designed for future integration with a solar roof panel system. The infrastructure is in place, waiting for the technology investment that will complete the energy strategy. This is not speculative. It is phased delivery with a clear end-state — the same logic I apply to any masterplan that must be built across a ten-year programme.

New drainage manholes were constructed. The existing manhole and soil vent pipe had to be relocated outside the footprint of the new extension — a functional necessity that required careful consideration to ensure that the final positions did not compromise the visual quality of the completed landscape. Infrastructure serves the building. It should never scar it.

Planning, Approvals, and the Design Evolution

Building control plan approval was secured in March 2023, allowing construction and inspections to proceed. Planning permission had not initially been required — the extension fell within permitted development. But as the design evolved and we committed to the western red cedar cladding, a planning submission became necessary. This was approved, and the final building control completion certificate was issued in late 2025 when works were substantially complete.

This kind of design evolution — where a material decision triggers a regulatory consequence — is entirely normal in complex projects. The important thing is that the governance framework is robust enough to absorb the change without compromising programme or compliance. At every scale, the principle holds: design decisions have regulatory consequences, and the architect’s role is to anticipate and manage them, not react after the fact.

Governance from a Distance

For much of the construction period, I was working abroad. This introduced a layer of complexity that will be familiar to anyone who has governed delivery across time zones and geographies.

The main house was sealed from the construction zone. A temporary kitchen was established in the front of the property so the family could continue to live in the house throughout the works. When the aluminium sliding doors were delayed — as bespoke components often are — a temporary weathertight wall was constructed to maintain the building envelope until the doors arrived. Programme absorbed the delay. The family stayed warm.

I coordinated site decisions remotely, working through my wife — who was on the ground and proved an extraordinarily effective client representative — and through a strong, trust-based relationship with the main contractor. When issues arose, and they always arise, decisions were made quickly because the design intent was clearly documented and the governance structure was already in place.

This is not unlike managing delivery across a portfolio of projects from a central design authority. You cannot be on every site, in every room, at every moment. What you can do is establish clear principles, empower the people closest to the work, and create communication channels that surface problems before they become failures.

The Space That Emerged

The rear of the house is now a single, light-filled room. The western red cedar cladding ages slowly against the garden, its colour shifting with the weather. The eight-metre sliding door, when fully open, removes the wall entirely. The kitchen table sits where the boundary between inside and outside used to be.

The children move between the garden and the kitchen without thinking about it. That was the point. The best design decisions are the ones that disappear into daily life — felt rather than noticed, shaping behaviour without announcing themselves.

The Scale Question

I have governed design frameworks across neighbourhoods containing thousands of residential units, where a single interface decision ripples through forty consultant teams and three years of programme. I have sat in rooms where the numbers on the table carried nine zeros and the consequences of a misaligned specification could delay an entire precinct.

And I have stood in my own half-demolished kitchen, studying the angle at which a steel beam meets a masonry wall, knowing that if this connection is wrong, the room above it is compromised.

The budgets are different. The materials are different. The number of people in the room is different. But the thinking — the governance, the risk awareness, the insistence that technical resolution and human experience must be held in the same hand — is exactly the same.

Design governance is not a function of scale. It is a methodology. A habit of mind. A refusal to separate the question of how something is built from the question of how it will be lived in.

Whether the budget is three hundred thousand or three hundred million, the discipline is the same: protect the design intent, manage the interfaces, anticipate the risks, and never lose sight of the person who will eventually walk through the door and call the space their own.

Sean Auld is a Chartered Architect (ARB/RIBA) and Design Director with over 25 years of experience across the UK, Middle East, and international markets. His work spans masterplanning, urban design, healthcare infrastructure, and residential delivery at every scale.

Website: seanauld.com | LinkedIn: linkedin.com/in/seanauld