PRINCIPAL BUILD PARTNER

The Senior Build Partner for Property Developers

Appraise the deal, then build it with someone who's done it before. One audience, one path in.

25+

Constructions

£3m

Annual Turnover Built

135

Projects in 4 Years

MCIOB

Chartered Qualified

20+

Years' Experience

£3m

Annual Turnover Built

135

Projects in 4 Years

MCIOB

Chartered Qualified

WHO IS THIS FOR

Build For Property Developer

Especially if you're early in your journey — a first-time or occasional developer who

hasn't yet appraised a deal properly, or who doesn't have the in-house experience to

run a build with confidence.

OFFER ONE

The Appraisal

A one-off, low-commitment read on your numbers. Start free with the instant cost calculator, then go deeper with a fully itemised cost breakdown or a full deal appraisal.

OFFER TWO

The Build Partner

Ongoing oversight on a fixed monthly fee. Jonathan works alongside you and your contractor to keep trades, cost and programme on track.

ABOUT JONATHAN

The Judgement of a Main

Contractor-Grade Director — Without The Full-Time Overhead.

Jonathan Andrews has 20+ years in construction leadership, has built and run two construction companies, and has delivered 135 residential projects in the last four years alone — with budgets up to £500,000 and teams of 30+ subcontractors. He's MCIOB qualified and CHAS Elite accredited.

"He can price a job, run the procurement, resolve a technical problem on site, manage the subcontractors, and report the numbers — because he has done every one of those jobs himself."

HOW IT WORKS

Three Steps In Order

1.Appraise

Get your numbers appraised

Start with the free instant cost calculator for a ballpark, then have Jonathan price your actual plans properly — itemised, from site experience, not a desk-based cost guide.

2. Decide

Decide whether to proceed

With real build costs, GDV, profit and exit options in front of you, you can make the go/no-go call on evidence instead of optimism.

3. Build

Bring Jonathan in as your Build Partner

Ongoing oversight on a fixed fee — keeping trades, cost and programme on track through to completion.

NEXT STEP

One conversation costs less than one mistake.

Tell us about your project and Jonathan will come back to you personally within 1–2 working days.

Independent construction

leadership for developers,

investors and homeowners—

20 years on site, on your side.

get started

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© 2026 Principal Build Partner. Jonathan Andrews