
Mark Stevenson
Mark Stevenson is a construction professional with almost 35 years’ experience across housebuilding, timber systems manufacturing and bespoke residential development. He is the owner of Elsworth Projects Ltd, a consultancy specialising in the project management of bespoke self-build homes.
Previously Managing Director of Potton and former Chair of NaCSBA and the Structural Timber Association, Mark is widely recognised for his specialist knowledge of timber construction, land finding and appraisal, and the construction of self-build projects.
Alongside his professional career, Mark is a skilled joiner, hands-on renovator and serial self-builder. He regularly shares his knowledge at Homebuilding & Renovating Shows and coaches self-builders.
Latest articles by Mark Stevenson

Is your new front porch legal? These are the rules you need to follow so you don't get caught out by porch building regulations
By Mark Stevenson published
It's easy to assume a porch won't need building regulations approval, but our building expert explains why taking the risk isn't worth it

Ignore these 12 red flags at your peril if you're on the hunt for the perfect plot
By Mark Stevenson published
Buying a plot? While it may feel like you've found the perfect spot, if you dig deeper and find any of these red flags – it could be time to walk away

Can you build a house on agricultural land? Sometimes says a self build expert, but here's why it can be a bit tricky
By Mark Stevenson published
A self build expert details what you need to consider if planning to buy farm land to build on, including if and when it is possible

Should I build a house in a flood zone? A self build expert explains whether or not it's a good idea
By Mark Stevenson published
We look at how to go about building a house in a flood zone, how to identify if you may be at risk and if it's ever a good idea

Garage conversion roofing changes you might need to make when adding new living space
By Mark Stevenson published
Self build expert Mark Stevenson talks through what might need to be done to your garage roof when planning a garage conversion

Need more living space but don't want to lose storage? Why a half garage conversion might be the solution
By Mark Stevenson published
Our expert explains what converting only half your garage involves and why it can be a good idea

When do garden wall building regulations apply? Our expert explains what to know
By Mark Stevenson published
Self build expert Mark Stevenson explains how size, location and type of wall will determine if approval will be needed or not

Is my garage exempt from building regulations? When you need them and when you don't
By Mark Stevenson published
Our expert explains the regulations that you must comply with if building a garage, including foundations and insulation requirements

The garage conversion building regulations you need — even if your build falls within permitted development
By Mark Stevenson published
Our self build expert explains which regulations apply as well as how to get your garage conversion signed off

Why conservatory foundations should be as deep as the main house
By Mark Stevenson published
Our self build expert explains how to tackle conservatory foundations, including regulations and cost

How to build a garden room: A guide to consents, costs, insulation and more
By Mark Stevenson published
Our self build expert explains all the important aspects of building a garden room

Garden room foundations and how to choose the best system for your project
By Mark Stevenson published
Our self build expert explains what you need to know about garden room foundations, including the systems, costs and regulations

Cavity wall insulation — the pros, cons, types and regulations
By Mark Stevenson last updated
For a warm and energy efficient home, cavity wall insulation is a must. We take a look at the options available and offer advice on how to make sure you pick the right type to suit your project – and adhere to the current regulations

What do building plots cost and where can you find the best value for money?
By Mark Stevenson published
Self build expert, Mark Stevenson, takes a look at what you can expect to pay for a building plot in the UK, and where your budget will get you the best deal

How to finish a self build to a perfect and professional standard
By Mark Stevenson published
Our self build expert explains everything you need to know about the finishing stage, installing fixtures and fittings, floor finishes and decorating

I’ve found a plot with planning consent — do I have to build the approved design?
By Mark Stevenson published
The good news is you’ve found a plot with planning permission but the bad news is you don’t like the approved design. Our expert explains your options and how to overcome this stumbling block

I'm a self build expert and this is how to stop your project going over budget
By Mark Stevenson published
Every penny counts when building your own home, so here’s how to ensure you keep your project spend on track

I'm a self build expert and here are the pros of using a self build package company for your build
By Mark Stevenson published
Our expert explains what a self build package company is and what the main benefits might be if you decide to use one for your build

How long does insulation last? Plus how to spot if it needs replacing
By Mark Stevenson published
Insulation, like most building materials has a lifespan. But how long does insulation last and how do you know when it's time to renew it?

9 common mistakes to avoid when buying a building plot
By Mark Stevenson published
Our self build expert explains some of the mistakes people make when looking to buy a building plot – and how to make sure you don't do the same

I'm a self build expert and here's my advice for managing your own self build
By Mark Stevenson published
Thinking of managing your self build? Mark Stevenson gives his advice on how to make building your new home as stress-free as possible

Finding a plot to build on — 14 key steps to success
By Jason Orme, Mark Stevenson last updated
Not sure how to start finding a plot? Our experts have come together to share their 14 top tips to help kickstart your project

8 steps to buying a building plot without planning permission — and to avoid purchasing an expensive dud
By Mark Stevenson published
Could buying land without planning be a route to an affordable plot? Plotfinding expert Mark Stevenson shares his advice — and explains how to avoid paying a premium for land that can’t be developed

What is an infill plot — and could one provide the perfect site to build your dream home in 2025?
By Mark Stevenson published
Plot expert Mark Stevenson explains what is an infill plot, his insider tips for finding one, and the potential benefits and challenges of self building a home on this type of plot
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