Home Builder Perth in Perth & PerthshireResidential Home Builders for Extensions, Renovations & Major Works

Marshall & Co are residential home builders based in Perth, specialising in major works on existing homes — large extensions, full renovations, structural alterations, knock-throughs and complete property refurbishments. We're not a new-build housing developer; we're a home builder you hire when your existing property needs a serious building project delivered properly.

There's a real difference between a general builder and a home builder. A home builder thinks about the whole house — how a new extension flows into the existing kitchen, how removing a wall affects the upstairs floor, how a loft conversion changes heating loads, how a re-roof should integrate with new dormers. We work at that whole-property level on every project.

For 15+ years we've been the home builder of choice for Perthshire homeowners taking on £30k–£300k+ projects. Our work is structured, project-managed, fully insured and guaranteed — and our clients become our biggest source of new enquiries.

As part of our trusted builder and joiner in Perth, we deliver every project to a premium standard across Perth and Perthshire.

Why Marshall & Co?

A home builder coordinates and delivers major construction projects on existing residential properties. That includes everything from a single large extension to a complete strip-back-to-bricks renovation. The defining feature of a home builder (versus a handyman or single-trade specialist) is that we manage the whole project — multiple trades, materials procurement, building control, programme planning, snagging and handover.

On a typical £80k single-storey extension, we'll coordinate around 12 different trades over 14–18 weeks: groundworkers, bricklayers, structural steel installers, roofers, joiners, drywall installers, electricians, plumbing fixture installers, plasterers, kitchen fitters, tilers, floor fitters, decorators, glaziers and external landscapers. Without a home builder coordinating that — and providing dedicated project management — the homeowner becomes the project manager themselves, and that's where most DIY-managed projects go wrong (delays, cost overruns, gaps in scope, trades arriving in the wrong order).

We replace all of that complexity with one contract, one project manager, one weekly progress update and one final invoice. You make design decisions; we make everything else happen.

Our sweet spot is residential building projects between £30k and £300k. That's typically a large extension, a full renovation, a major loft conversion, a substantial garage conversion package, or a combination of works (for example, a kitchen extension plus internal reconfiguration plus re-roof).

We don't generally take on small handyman jobs (a single door rehang, a leaky tap, a fence panel) — there are excellent local tradespeople better suited to that work. We also don't take on full new-build housing developments — we focus exclusively on existing homes, which is where 95% of Perthshire homeowners need expert help.

We do take on high-end one-off projects: bespoke garden rooms, premium kitchen renovations, luxury bathroom suites, basement conversions and listed property work. Our portfolio includes everything from £30k garage conversions to £250k whole-house remodelling projects, with related works including deck construction, flooring repair and full tile work replacement packages.

Home builder costs in Perth vary by project type and specification. As a guide: single-storey rear extensions cost £1,200–£2,200/m² (£35k–£90k typical); two-storey extensions cost £1,800–£2,800/m² (£60k–£180k typical); full home renovations cost £800–£1,500/m² (£60k–£200k typical); loft conversions cost £20k–£55k; garage conversions cost £8k–£20k.

Specification drives cost more than anything else. A basic extension with B&Q kitchen and laminate floors will cost a third of an extension with a German handleless kitchen, engineered oak floors and bi-fold doors. We'll always give you honest advice on where to spend and where to save.

All our quotations are fixed-price after a detailed scope and specification has been agreed. We don't work on cost-plus, day-rate, or rolling-estimate contracts. Once the scope is locked, the price is locked — variations are only added if you change the scope.

Three things make us different from most Perth home builders. First, we're properly structured: limited company, full insurances, written contracts, weekly programme updates, formal change-control. We run projects the way commercial main contractors do — but on residential work.

Second, we're local and accountable. We live in Perth and Perthshire. Our reputation is everything — and that's why our last 50+ projects have all come from referrals or repeat clients.

Third, we genuinely care about quality. We could cut corners in a hundred ways and most clients would never know — but we don't. Substructures get the right ventilation. Wall plates get the right strap density. Door linings get packed and shimmed properly. The unseen work is what tells you whether a home builder is good or just adequate.

If you're planning a major project on your home — anything from an extension to a full renovation — get in touch for a free, no-obligation site visit. We'll give you honest advice on feasibility, realistic costs and timescales, and a fixed-price quotation if you want to proceed.

15+ years of residential home-building experience in Perthshire

One project manager, one contract, one point of contact

Fully itemised, fixed-price quotations — no surprises

Building warrant and planning support included

All trades coordinated in-house under our supervision

Public liability and employer's liability insurance

12-month workmanship guarantee on every completed project

5-star Google rated by Perthshire homeowners