Past Commission • Not for Sale

Senderra · A Custom Land Rover Defender D110 A re-engineered classic Defender 110. Featured here as a reference. Not for sale.

A featured past commission. Shown here as a reference for what a Helderburg can be.
The Commission

In the shop, we called this one Tall Tom’s Defender.

I met Tom at a show. He walked into our booth and we knew it was him right away, because he’d warned me he was a bigger guy. He just wanted to sit in a Helderburg and see if it fit. The one on display had been built for a driver about my height, five foot eight. Tom climbed in and said, “This is really tight.”

That’s the point, I told him. Every Helderburg is built for one person.

So Tom flew out to the shop. We spent the day driving builds, and when he slid into one made for someone his height and pushed the seat all the way back, I watched his face change. That was the moment Senderra began.

We built the seat frames around him, fitting his torso and his legs. We changed the steering wheel diameter and adjusted the pedals. Then we moved the second row back too, because a tall man usually has a tall family, and Tom plans to keep this one for life. Moving seats in a Defender means reworking the rear tub and testing every seat belt mount. Almost nobody does it.

Tom lives in Texas, so we built for the heat. Fixed single-pane side glass with a 70% tint, sealed, tinted glass roofs that bring in light without the greenhouse effect, and sound deadening that doubles as insulation.

The interior is buckskin leather with a diamond quilt and no contrast stitching, under a darker Alcantara headliner so your eye lands exactly where it should. Outside, the blue runs all the way up over the roof, set off by silver accents and our own monolock beadlock wheels.

Nothing on Senderra shouts. Everything flows. And Tom finally has all the room he was looking for.

  • Model Defender 110
  • Drivetrain Mark III.5 Turbo Diesel
  • Commissioned by Tom, Texas
  • Color Metallic Blue
  • Delivered October 2026
  • Status Not for Sale

Every line above is the result of upgrades engineered in-house, found in no other custom or restomod Defender in the world.

See Helderburg's Proprietary Upgrades
The Build Film · From Paul

Paul walks around Senderra the way every Helderburg is meant to be seen.

Step back ten feet. Then twenty. Study the seams. The paint. The exhaust note. The interior. By the end you will know what to look for, and how to compare any custom Defender build.

Senderra build film thumbnail

Filmed at Haldenmere · The Ozarks

Four Styles, One Custom Process

A Helderburg is not one look. It is your own.

Senderra is one direction. Every Helderburg is custom, designed around the owner rather than chosen from a catalogue, and most commissions draw from one or two of these four. The expedition build is the one most people picture first. It is only the beginning of what a custom Defender by Helderburg can be.

Why a Helderburg Drives Differently

The difference is not cosmetic alone.

The architecture itself has been re-engineered. If you want the full picture of what is under a Helderburg before you speak to Paul, two doorways.

The Twelve Systems

Senderra carries twelve proprietary Helderburg systems, found in no other restored, custom or restomod Defender. The drivetrain on the original block. A suspension with the body roll engineered out, widened at the chassis, not with spacers. A cabin built for the eighth hour, not the first.

See Helderburg's Proprietary Upgrades →

Three Approaches. Only one is a Helderburg.

A classic Defender can be restored, restomodded, or re-engineered. A restomod replaces the body and drops in a GM V8 crate motor, no longer numbers matching. Respectfully, a kit car. A Helderburg keeps the original chassis and block, and re-engineers everything else.

What is a Helderburg →
Worth Knowing

Questions people ask before commissioning a custom Defender.

  • A Helderburg Defender is a classic Land Rover Defender, 25 years or older, completely re-engineered around twelve proprietary in-house systems. The original chassis and engine block are preserved, so it stays numbers matching. Everything else, the drivetrain, suspension, braking, steering, cabin, lighting, and finish, is redesigned to perform like a modern vehicle while keeping the Defender's character. Each is commissioned one at a time, designed by Paul Potratz at Haldenmere in Northwest Arkansas and hand built in England. A design and engineering house, not a restoration shop or a restomod builder.
  • Something else. A restoration returns a classic Land Rover Defender to original specification, so it drives like an old Defender. A restomod replaces the body and swaps in a GM V8 crate motor, so it is no longer numbers matching. A Helderburg keeps the original chassis and engine block, then re-engineers every system around them. Original where it matters, redesigned everywhere else.
  • Both have a case. A gasoline V8 swap is louder and quicker off the line, but it removes the original engine block, so the Defender is no longer numbers matching, which most collectors consider the central authenticity question. A Helderburg Turbo Diesel keeps the original block and re-engineers it around proprietary internals, so the vehicle stays a numbers-matching classic Defender while gaining the torque, range, and composure the platform was designed around. Diesel is the engine the Defender wears best. Power is not the point, composure is. Paul covers this in full in a short film here
  • Both. Each Helderburg commission specifies manual or automatic transmission to suit the way the owner drives. The Mark III.5 Turbo Diesel is engineered to pair with either, and the choice does not affect delivery timing or the proprietary systems around it.
  • Composed at highway speed, capable on a dirt road, and quiet in a cabin built for long drives. The suspension was re-engineered to eliminate body roll. The brakes are sized to modern highway weights, with enough power to overtake and merge with confidence. The drive is comparable to a Mercedes-Benz G-Wagon (G-Class, G-Wagen). Power is not the point, composure is.
  • A Helderburg commission begins with a private conversation with Paul. Most start by phone or video call. The conversation covers what the owner wants the Helderburg to do, who will drive it, and the spirit of the build. From there, materials are sourced and the vehicle is built by hand in the English workshop, one at a time. Total time is twelve to sixteen months from commission to delivery. The owner is invited to visit Haldenmere in Northwest Arkansas, Painter Ridge in Connecticut, or the workshop in the Cotswolds during the build. Delivery is hand-coordinated, anywhere in the world.
  • Helderburgs can be seen by appointment at Haldenmere, the design house in the Ozarks of Northwest Arkansas, or at Painter Ridge, the New England property in Connecticut. The English workshop in the Cotswolds is open to commissioning owners during a build. Most prospective owners visit Haldenmere first. The conversation begins by writing to Paul.
  • A seven-year unlimited-mile concierge program is included with every commission. Helderburg parts are engineered to outlast the original Land Rover equivalents, and the originals fit if needed, so any qualified Land Rover specialist worldwide can service a Helderburg. Owners also receive a direct line to Paul and the English workshop. Every Helderburg commission includes membership in the Helderburg Society, which gathers owners through the year for driving events, gatherings at Haldenmere, and visits to the English workshop.
  • Helderburg commissions begin at $258,740 and reach $448,811 and beyond. The final figure depends on body style (Defender 90, 110, or 130), materials, and the level of personalization the build calls for. Rocco is not for sale, but a build of this kind sits in the middle of that range. Available commissions are priced individually. The best next step is a direct conversation. Ask Paul
Past Commissions

Every one built once. None of them again.

Senderra is one of many. Each Helderburg is built for a single owner, then never repeated. A few of the commissions that came before.

Films

See more, by the way you like to watch.

More than a hundred films. The drives, the walk-arounds, the honest questions, and the quieter moments. Start wherever you like.

The Drive No Destination, Just the Ozarks
No Destination, Just the Ozarks

A typical Sunday in the Ozarks: no destination, just a Helderburg drive beyond the pavement, where adventure is measured by where you’re willing to go.

The Helderburgs Rocco: The Boldest Helderburg Yet
Rocco: The Boldest Helderburg Yet

Rocco is the moment you realize a classic Defender can be both unapologetically bold and quietly refined.

The Questions Restored Land Rover Defender Review: Sarge
Restored Land Rover Defender Review: Sarge

Take a front-row seat as Paul Potratz, founder of Helderburg, takes you on a spirited test drive of “Sarge”—a fully restored Land Rover Defender 110 that redefines what it means

From Paul Presence | Sundays at Haldenmere
Presence | Sundays at Haldenmere

A single handcrafted Leica lens, one trip to Italy, and a reminder that character outlives perfection. Step inside the story of presence, imperfection, and choosing the few objects that truly matter.

More than one hundred films. All the custom Defender questions answered.

Watch the Films

Senderra stays with the family it was built for.

A few Helderburgs are available now, ready sooner than a full commission. Or begin a commission in Senderra's spirit, with a color of your own.

See the Helderburgs Available Now
A Direct Line to Paul

The next Helderburg will be built around you.

If Senderra stirred something, the next conversation is about your Helderburg. Ask anything, about a build in progress now or a commission of your own. Paul reads every message and answers personally.

Paul Potratz · Founder, Helderburg · Twenty years in automotive marketing · Featured in the Wall Street Journal, Robb Report, Road & Track, Carscoops, and the Collector Car Podcast

Contact Paul Directly