Meet the Team

Seán McAlister

Director / Architect / Builder

Since founding the business in 2012, Seán has led Pencil and Brick, designing both modest and front-page home improvement projects across London. Since 2018 he’s also been leading our construction company bringing design and build together under one roof.

Seán is a vocal advocate for mandatory builder licensing and stronger consumer protection in the UK. His commitment to raising the bar earned him a seat on the FMB London Board, and the FMB National Standards Committee, where he campaigns for better standards, accountability and trust in construction.

Originally from Northern Ireland, he now lives in Walthamstow with his wife and two kids, in a home he renovated and extended inhouse (forgive the pun) – he walks the talk. When he’s not thinking about houses, you’ll find him singing or playing a competitive game of table tennis.

ARB Registration Number : 083888H

More about Seán

Unexpected hobby or side obsession:

Singing bass in small ensembles, especially for renaissance and baroque choral music

Secret talent totally unrelated to work:

Quick moves on the Table Tennis table

My brain runs on…

OCD Juice

Current favourite building material or tool:

Smoked Portuguese Cork

Design trend you’ll never tire of:

John Soane’s Lumière Mystérieuse

Playlist/album I have on repeat at work:

In Colour by Jamie XX

Blogs from Seán

Home Design & Build

Renovation Decision Fatigue Is Real, Here’s How to Handle It

Anyone who has renovated a home knows how quickly excitement can turn to overwhelm. You…

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Air Source Heat Pump with Wind Turbines
News

Heat Pump Grants Cuts: What it means for Home Renovations and Net Zero

The government plans to cut billions from heat pump grants, affecting homeowners planning renovations. Explore…

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home renovation with large glazing overlooking garden, showing indoor-outdoor design connection.
Home Design & Build

Garden Renovation: Should You Include It in Your Home Makeover?

Discover how to include your garden in a home renovation and create a stylish, functional…

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Two neighbouring homes, one recently extended, showing planning permission differences.
Property Development

Why Planning Permission isn’t a guarantee even if your neighbour has already done the same.

Just because your neighbour received planning permission doesn’t mean your project will automatically be approved.…

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Luxurious bathroom design with bold tiles and stylish sink
Design Ideas

6 Things to Consider for your Perfect Bathroom Design

Discover six top tips for luxurious bathroom design. Learn how to combine tiles, paint, and…

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Modern glass terrace rear extension in Maida Vale with a living wall and floor-to-ceiling glazing.
Home Design & Build

Matt and the curious case of the elusive steel

In a real life Maida Vale mystery, nothing was going to stop Matt from completing…

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Looking to renovate your London home?

As both architects and a construction practice under one roof, we can manage every stage of your project from initial concept to final completion with clear budgets, realistic timelines, and seamless collaboration. Whether you’re planning a sustainable retrofit, a beautiful extension, or a full home refurbishment, we make the process straightforward, stress-free, and tailored to how you want to live.

About us

Get to know us

We’re known for bringing a fresh, sometimes quirky approach to reimagining period homes, blending contemporary flair with a deep respect for original character. Our work strikes a careful balance between old and new: thoughtful, playful, and never afraid of statement colour or bold design details.

We don’t follow design trends for their own sake.  Instead, we approach each home on its own terms, creating spaces that feel naturally light and open, or calm and atmospheric, depending on what suits it best.

Our Ethos

Our philosophy is simple: great design and great delivery should always go hand in hand.

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Close-up of original London stock bricks in arch detail

Our Process

Our process helps you navigate planning, budgeting, and design making home renovations feel more joyful.

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A basement family room with a kitchenette, a polished concrete floor, and a 'fin-like' ceiling detail.

What we do

We offer architectural design or full design and build services, bringing creative thinking and hands-on expertise to both.

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Close up detail of terracotta splashback and countertops

Awards and Recognition

We’re RIBA Chartered and proud to be recognised by the Federation of Master Builders and Best of Houzz. Our work…

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Pencil and Brick

Pencil and Brick Architects Ltd. RIBA Chartered Practice No.20016109, Registered in England and Wales. Reg No. 08511999. Pencil and Brick Ltd, Federation of Master Workers No. 130675, Registered in England and Wales. Reg No. 12010077 © Pencil and Brick.