Our Dorking Architect Talked Us Out of the Biggest Extension and Into the Smartest One

We had the garden for it. A proper Dorking garden. Deep enough for a five metre extension with room left over for the kids to play, the trampoline to stay, and the dog to run laps.

We had the budget. Seventy thousand. Enough for a large single storey rear extension with a premium kitchen and all the trimmings.

And we had the desire. Three years of living with a kitchen that was too dark, too narrow, and too far from the garden. Three years of saying "next year we will do it."

Our architect listened to all of this during the first meeting. Then he asked a question that nobody else had. "If I could give you the kitchen you want for forty thousand instead of seventy, what would you do with the other thirty."

We didnt have an answer. Because nobody had ever suggested we didnt need to spend the full budget. Every other conversation had been about spending all of it. Our architect was the first person to ask whether we needed to.

If you are planning a project in Dorking and looking for dorking architects who question your assumptions before spending your money, heres what happened when we stopped thinking about the biggest extension and started thinking about the smartest one.

What Seventy Thousand Would Have Built

A five metre rear extension. Full width. Flat roof with a large rooflight. Bifold doors across the back. Open plan kitchen diner with an island. Utility room behind a pocket door. The works.

It would have been impressive. No question. A big room with lots of light and a strong connection to the garden.

But our architect pointed out something we hadnt considered. Our rear reception room was barely used. A sofa nobody sat on. A television nobody watched because everyone ended up in the front room instead. Bookshelves that hadnt been reorganised since we moved in.

That room was roughly twelve square metres of dead space sitting between our kitchen and our garden. Space we already owned. Space that cost us nothing. Space that a five metre extension would have duplicated rather than utilised.

What Forty Thousand Actually Built

A two and a half metre rear extension. The wall between the kitchen and the rear reception room removed with a steel beam supporting the load above. The old reception room absorbed into the kitchen creating a combined space of roughly twenty two square metres. The extension added another eight square metres at the garden end with glazed doors and a rooflight.

Total kitchen diner. Approximately thirty square metres. Almost identical to what the five metre extension would have achieved. Because the twelve square metres of dead reception room replaced the twelve square metres that would have been built from scratch.

Build cost. Twenty eight thousand. Total project cost including architect fees, structural engineer, kitchen fitout, and finishing. Forty one thousand.

Forty one thousand. Not seventy. For a room that is functionally the same size. With better light because the rooflight sits over the old wall line bringing daylight into the centre. With a better garden connection because the extension is shallower so the doors feel closer to the lawn.

Where the Thirty Thousand Went

We didnt spend it on the kitchen. The kitchen budget stayed the same regardless of which option we chose. Same units. Same worktops. Same appliances.

Ten thousand went into the loft. A basic conversion with a velux window. Not a full dormer. Just enough to create a home office above the bedrooms. Quiet. Private. Away from the family noise. Something we had wanted for years but never prioritised.

Eight thousand went into the garden. New patio. Raised beds. A proper lawn that the builder hadnt destroyed because the extension was small enough that the garden survived construction largely intact.

The remaining twelve thousand went back into savings. Money we didnt spend. Available for whatever comes next.

The five metre extension would have consumed the entire budget. No loft office. No garden upgrade. No savings. Just one big room that achieved the same thing as a smaller room combined with a space we already had.

Why the AONB Made It Even Smarter

Dorking sits within the Surrey Hills Area of Outstanding Natural Beauty. Planning in the AONB is stricter than normal. Extensions need to be proportionate. Materials need to be appropriate. Scale needs to respect the landscape character.

A five metre extension would have required a full planning application with detailed design justification. Our architect said it would probably be approved but the process would take eight to ten weeks with closer scrutiny than normal.

A two-and-a-half meter extension fell within permitted development. Lawful development certificate approved in four weeks. No planning risk. No design scrutiny. No anxious waiting.

The smaller extension was approved faster, built more cheaply, and delivered the same functional result. The AONB constraint that could have complicated a larger scheme became irrelevant with the smaller one.

What We Tell Everyone Now

Before you decide how big your extension needs to be, audit your existing ground floor. Is there a reception room you barely use. A dining room thats become a dumping ground. A space that exists on the floor plan but not in your daily life.

If that space exists, the extension you need might be much smaller than you think. The room you are trying to build might already be inside your house. Just separated from the kitchen by a wall that doesnt need to be there.

Six to eight months from first conversation to completion. The smartest extension is not always the biggest one. Sometimes its the one that uses what you already have before building what you dont.