A Broker Who's in the Trenches With You.
I'm Kenneth Jamaca, Managing Broker of J Castle Group.
J Castle Group is the brokerage *I* would want to be part of as a California Realtor®. I built J Castle Group because I couldn't find a broker that really cared about what *I* wanted out of life, my career, my time, my energy, etc.
I have spent my entire life building strong and capable teams. From school age, banding together my tight group of friends, through the launch of my first companies, through blood, sweat, and tears working long hours side by side with employees that would go to the ends of the earth for me because they knew I'd be right next to them the whole way.
My career was born in Silicon Valley and honed through technology. Now, I am primed and ready to take my real estate-focused team to the next level.
Are you ready for a Broker that WORKS FOR YOU, not the other way around?
If so, grab some time on my calendar, and let's talk.
Keep More Money
80/20 split with a $17,500 cap.
No monthly fees.
Work Smarter
$400 internal TC option.
$125 E&O per file.
Predictable, simple.
Grow Your Business
Unlimited broker support, free business coaching, and exclusive marketing partnerships at agent-only rates.
Real Agents. Real Results.

Eddie Smith
Working with Ken is a dream, as someone who didn't have a family member or friend in the business of real estate to help guide me along my journey, it was tough not having a frame of reference. What I love about working with Ken is he has taught me tons about solving out of the ordinary problems so much so that I now have other realtors reaching out to me for problem solving. With Ken's help I am excited to see how much further I will go in this industry, I couldn't have done it without him.

Katie Martin
I had the pleasure of working with Ken as his Transaction Coordinator for several years before becoming a licensed agent, so I got to see firsthand how he runs his brokerage. When I earned my license, I interviewed several brokerages and spoke with other agents, but it quickly became a no-brainer to hang my license with J Castle. Ken is the only broker who made it clear that he is here for his agents — not the other way around. Day or night, I know he’s just a phone call away, and nine times out of ten he already has the answer I need. If not, he knows exactly where to find it. That same level of support extends to every agent at J Castle. We’re all just a call away, and that kind of culture makes all the difference.

Irik Edens
J Castle Group isn't just a brokerage. It's a family. This is a laid-back brokerage in which you fit in by being yourself, no matter who you are. Ken and Natalie Jamaca are great mentors and climb mountains to have your back. They care so much about the well-being of everyone in the brokerage, and there's immediate support anytime you need it. And of course, everyone else in the brokerage is always there to support each other and help each other meet needs as well. I can't ever imagine leaving J Castle Group.
SEE HOW MUCH YOU COULD SAVE
JOIN US
WHAT YOU PAY
80/20 split
$17,500 annual cap
$125 E&O per transaction
$400 internal TC (optional)
WHAT YOU GET
Unlimited 24/7 broker support
Personalized coaching
Marketing partnership discounts
Collaborative culture rooted in service
Us vs. Others
| Category | J Castle Group | Cloud Cap Model (example) | Traditional Boutique (example) |
|---|---|---|---|
| Split / Cap | 80/20 • $17,500 cap | Varies • cap typically $12k–$20k | 60/40–70/30 • often no cap |
| Monthly Fees | $0 | $0–$200+ | $0–$300+ |
| E&O (per file) | $125 | $60–$200 | $50–$200 |
| TC Option | In-house $400 (optional) | 3rd-party or team TC | Varies by office |
| Support Access | 24/7 broker access | Virtual, ticket/chat + mentors | Office hours; manager availability |
| Coaching | Included | Included or paid add-ons | Varies; often paid |
| Typical Annual Savings* | $25k–$50k+ | Comparable depending on plan | Lower take-home at same GCI |
LET'S TALK ABOUT YOUR GOALS
Grab 20 minutes on my calendar. We’ll look at your numbers, your goals, and whether J Castle Group is the right fit. No pressure—just clarity.
FAQ
I am a Team Lead at my current brokerage. Can I build a team here?
ABSOLUTELY! In fact, you can build an entire brand here, not just a team. J Castle Group currently operates under 5 different brands. Connect with Ken to learn how you can elevate your team to their own brand.
What if I already capped at another brokerage?
Do I have to use your TC?
Is coaching mandatory?

