Cape Town coastline with Table Mountain and vineyards at golden hour

Western Cape · Bespoke Insurance Brokerage

Exceeding expectations.
Delivering excellence
in asset & wealth insurance.

Tailored insurance portfolios curated for discerning individuals, families, and enterprises across the Western Cape.

Classic motor car at a Cape estate

Our Approach to Risk

A thoughtful strategy
for protecting
what matters.

At Diagonal Insurance Brokers, we understand that protecting your assets requires a thoughtful strategy. We move beyond standard policies to create risk management plans that fit your needs.

Our approach is defined by privacy, proactive service, and a clear understanding of your unique situation. We work to provide a secure shield for your legacy.

Explore Our Services

Our Services

Specialised protection across
three core pillars.

Each portfolio is composed by a principal broker, drawing on the best of South Africa's underwriting markets to match your scale and sensitivity.

Private Wealth & Lifestyle

  • Executive Insurance
  • Luxury Motor
  • Classic Motor
  • Personal Insurance
Explore Service

Corporate & Commercial

  • Commercial Insurance
  • Building Insurance
  • Factory Insurance
  • Manufacturing Insurance
  • Construction Insurance
  • Body Corporate Insurance
  • School Insurance
  • Bed & Breakfast Insurance
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Our Insurer Partners

Backed by South Africa's
most trusted names.

We place cover with leading underwriters, ensuring every portfolio is supported by financial strength and proven claims experience.

  • MUA Insurance Acceptances insurance partner logo

    MUA Insurance Acceptances

    Specialist underwriter for high-net-worth individuals — luxury homes, prestige and classic motor, fine art, jewellery and yachts.

  • CIA Building Insurance Specialists insurance partner logo

    CIA Building Insurance Specialists

    South Africa's dedicated buildings underwriter for sectional title schemes, body corporates and commercial property portfolios.

  • Santam insurance partner logo

    Santam

    The country's largest short-term insurer, offering enduring financial strength across personal, commercial and specialist lines.

  • Old Mutual Insure

    Old Mutual Insure

    A trusted multi-line insurer providing broad personal, commercial and agricultural cover backed by the Old Mutual group.

  • Bryte Insurance insurance partner logo

    Bryte Insurance

    A leading commercial and specialist risk insurer covering corporate property, liability, engineering, marine and trade credit.

  • ONE Insurance insurance partner logo

    ONE Insurance

    Niche commercial underwriter known for responsive service, tailored SME cover and pragmatic risk solutions.

  • Hollard insurance partner logo

    Hollard

    South Africa's largest privately-owned insurer — flexible personal and commercial products designed around the way you live and work.

The Diagonal Difference

A commitment to precision,
grounded in local expertise.

01

Local Insight

Deeply rooted in the Western Cape, we possess an intimate understanding of the region's specific risk landscapes and market dynamics. We provide bespoke insights tailored to the local environment.

02

Strategic Service

We provide proactive, dedicated management of your portfolio, ensuring your coverage evolves seamlessly with your lifestyle and business. Experience true principal-to-principal attention.

03

Uncompromising Standards

We partner only with top-tier underwriters, guaranteeing robust policies that truly exceed expectations when it matters most. Your assets demand nothing less.

Voices of Trust

A Legacy of
Assured Confidence.

"The level of discretion and proactive management Diagonal applies to our family's varied assets is unparalleled. They anticipate risks before we even consider them."
Private Wealth Client, Constantia
"As our commercial footprint expanded across the Cape, Diagonal seamlessly structured a multi-layered liability programme that allowed us to operate with absolute certainty."
Managing Director, Commercial Enterprise

Our Process

A measured path
from enquiry to stewardship.

Our approach is defined by privacy, proactive service, and a clear understanding of your unique situation. We work to provide a secure shield for your legacy.

01

Discovery

A confidential conversation to understand your assets, ambitions, and the risks that follow them.

02

Architect

We design a layered portfolio of policies, drawing from the markets best suited to your profile.

03

Implement

Cover is bound with precision; documentation, schedules, and counterparties handled end-to-end.

04

Stewardship

Ongoing review and proactive adjustment, so your protection evolves with your life and enterprise.

Book a Consultation

Engage our experts to craft a strategy.

A risk management strategy aligned with your goals. Discretion assured.

  • Western Cape, South Africa
  • tracey@diag.co.za
  • 021 557 2259