What areas does Studio Harrison work in?

Derbyshire and the Peak District predominantly, with regular projects across the wider East and West Midlands, and a number of clients in Jersey, Channel Islands.

Do I need planning permission for my extension or new build?

Most extensions and all new-build homes need either planning permission or, in some cases, a Lawful Development Certificate confirming permission isn't needed — which applies depends on scale, location, and whether the property is listed or in a conservation area.

Do you offer snagging inspections for new-build homes?

Yes — a technologist-led inspection of a newly built home before or shortly after legal completion, checking construction quality and finish against the specification and building regulations.

What's a fabric-first approach to sustainable design?

Treating the building's fabric — insulation, airtightness, glazing, thermal bridging — as the foundation of energy performance, before adding renewable technology on top, in line with Passivhaus and AECB principles.

How long does a typical residential project take?

Usually several months from initial consultation to a full set of construction drawings, plus a further 8 weeks for planning determination on a standard application.

How much does it cost to work with an architectural designer on a home project?

The investment is usually structured either as a percentage of the construction cost or as a fixed fee for each design stage, agreed upfront once the scope is clear.

Tommy Harrison 9/21/26 Tommy Harrison 9/21/26

The Mansion Tax Is Coming: What a £2m+ Threshold Means If You're Building or Extending

A new charge on £2 million homes arrives in 2028. Before it shapes a single decision about your extension or new build, here's what's actually known — calmly, and without the scaremongering.

Biophilic Design: Why Nature-Led Homes Aren't Just a Trend

Every design movement eventually gets a marketing name. This one has fifty years of research behind it, and roughly five years of people using it to sell houseplants. Here's how to tell the difference.

Building in Jersey: A Mainland Practice’s Guide to Island Planning

Jersey Architecture: A mainland practice's honest guide to its planning system, its property market, and what building well on an island actually asks of you.