Bill Bullock, Lydia Sarkissian & Magdalena Sarkissian - Global Estates

Bill Bullock, Lydia Sarkissian & Magdalena Sarkissian - Global Estates Lydia and Bill consistently represent only the best of Marin County luxury real estate available.

Lydia Sarkissian and Bill Bullock have been representing well-known celebrities and CEOs in the buying and selling of luxury properties in Marin County for many years. Their shared philosophy of maintaining a standard of integrity and excellence in their business and service to clients continues to be their focus. And they work with each client to create a custom action plan that accounts for every detail of the luxury real estate transaction.

05/06/2026

✨JUST SOLD — 107 Mount Tiburon, Tiburon, CA ✨

When we envisioned how we were going to bring a vacant lot to life, we introduced new technology into our marketing video and it made all the difference.

We’re constantly pushing to innovate, and it’s through conversations with our incredible real estate colleagues at that we share ideas and collaborate on what truly works. This property had sat on the market for over a year before we took over the listing. Once we did, we secured our buyer in just 1 week after he saw our video because the site and the future home just made sense to him.🙏🏼

You’ve probably heard “who you work with matters” and yes, it can sound like a cliché. But here’s what we actually mean by that:

We don’t just list properties. We tell their story. We invest in the vision of what a home can be, not just what it is today, because the right buyer isn’t buying land, they’re buying a future.🎬

That’s the difference. And that’s what we bring to every listing. 🤍

✨JUST SOLD OFF MARKET | HIGHEST SALE YEAR TO DATE ✨We are proud to announce that we represented the highest sale year-to...
04/29/2026

✨JUST SOLD OFF MARKET | HIGHEST SALE YEAR TO DATE ✨

We are proud to announce that we represented the highest sale year-to-date in Belvedere and the highest residential sale in Marin County since 2015. We represented both the buyer and the seller, an example of why it’s so important to work with someone who truly understands the market and can create opportunities where none seem to exist.

This property was never on the market. We approached the seller directly, past clients, and successfully constructed the deal from the ground up. A huge win and an iconic sale.

Sited on the westernmost promontory of Belvedere Island, with the Bay directly below, the home offers unobstructed views from Mount Tamalpais to the west, through Sausalito, the Golden Gate Bridge, the entire San Francisco skyline, and the western coastline of Belvedere Island to the southeast. It truly exemplifies “Belvedere.”

Designed by Warren Callister, the home blends refined elegance with perfectly framed vignettes from every window—coastline here, skyline there, the bridge in the doorway—each view stunning on its own, and even more powerful together in one incomparable panorama.

101 Belvedere Ave, Belvedere CA

🏷️ Sold for $28,250,000

✨JUST SOLD OFF MARKET | 166 Homestead Blvd Mill Valley CA ✨🛏 4 Bedrooms🛁 4 Bathrooms📐 3,595 Sq Ft🏷️ $5,000,000A meticul...
04/22/2026

✨JUST SOLD OFF MARKET | 166 Homestead Blvd Mill Valley CA ✨

🛏 4 Bedrooms
🛁 4 Bathrooms
📐 3,595 Sq Ft
🏷️ $5,000,000

A meticulously reimagined home blending architectural vision with elevated design across four stunning levels. Designed in collaboration with JM Interiors, every detail was thoughtfully curated.

A perfect balance of refined entertaining spaces and private retreats in one of Mill Valley’s most coveted neighborhoods.

Through our close relationships and network, we were able to secure an offer in just 1 week!

Thank you to and his team for bringing the buyer and being one of our favorite agents to work with.

Thinking of buying or selling off-market? Let’s connect.

✨ JUST SOLD OVER ASKING | 25 Mark Terrace Tiburon ✨Our sellers came to us with a challenge: unpermitted work from a prev...
04/21/2026

✨ JUST SOLD OVER ASKING | 25 Mark Terrace Tiburon ✨

Our sellers came to us with a challenge: unpermitted work from a previous owner that needed to be resolved before going to market. We navigated the process, worked with the Town of Tiburon to get everything finalized, and secured financing upfront to protect them every step of the way.

This is why it matters who you work with in a major transaction of your life.

Property Highlights:
• 🛏 5 Beds
• 🛁 4 Baths
• 📐 4,075 SF
• 🌿 0.48 Acre Lot
• 📅 Built in 1964
• 🏷️ Sold $5,000,000

Thank you to our friend and colleague in the community for bringing us a great buyer.

04/21/2026

🎥 Check how the seller transformed this Italian villa — Architectural Digest video with Magda

ROSS LUXURY ESTATE 🌿✨

📍 27 Upper Rd, Ross

• 🛏 8 Bed | 🛁 8 Bath
• 📐 10,228 Sq.Ft.
• 🌳 ~3 Acres

Italian elegance + modern design with sweeping Mt. Tam & bay views 🌄

Highlights:
• 🏊‍♀️ Pool + Olympic swim lane
• 🌺 Lush designer gardens
• 🎬 Theater + 🍷 30K bottle wine cellar
• 🏡 Guest cottage + staff quarters
• 🔊 Smart home (Crestron + Lutron)

Walk to Phoenix Lake & top schools 🚴‍♀️

✨ Ultimate entertainer’s estate

✨ JUST LISTED - VALHALLA | A once-in-a-lifetime chance: Valhalla 1893, Sausalito’s iconic historic waterfront estate, no...
04/15/2026

✨ JUST LISTED - VALHALLA | A once-in-a-lifetime chance: Valhalla 1893, Sausalito’s iconic historic waterfront estate, now for sale. ✨

Built in 1893 and redesigned with exquisite attention to detail, this luxurious compound includes a main residence and guest house with a combined ~8,770 sq ft, waterfront terraces, lush gardens, and breathtaking Bay views. A rare opportunity to own a piece of Bay Area history.

🛏️ Bedrooms: 8
🛁 Bathrooms: 10 (6 full)
📐 Square Footage: 8,770 sq ft
🌿 Lot Size: ~0.45 acres
🏗️ Year Built: 1893
🚗 Garage: 4-car
💰 Price: $28,000,000
🏷️ Style: Historic waterfront compound
🌉 Views: San Francisco skyline, Bay, Angel Island
🌊 Location: Direct waterfront in Sausalito

Message 📱 us for a private tour

Magda Sarkissian | (415) 847-7913 | DRE 02028978
Lydia Sarkissian | (415) 517-7720 | DRE 01159670
SarkissianBullockTeam.com | Golden Gate Sotheby’s Intl. Realty
Bill Bullock | CA DRE # 00837358

04/13/2026

✨ JUST SOLD – 17 Tanfield Rd, Tiburon ✨

Strategic planning, pricing, and timing around preparing the home for market helped attract multiple offers, ultimately resulting in three offers over asking and a sale close to $1M above the list price. In this market, lean on us as your real estate guides to help you achieve the same level of success.

Private gated drive, sweeping grounds, and breathtaking southwest-facing views of the Bay, Golden Gate Bridge & Mt. Tam 🌉🌄

Beautifully landscaped with garden paths, expansive lawn, and a pool terrace—perfect for indoor/outdoor living & entertaining 🌿🏊‍♀️

✨ HIGHLIGHTS
• 📐 ~4,385 sq ft (incl. guest studio)
• 🛏️ 5 bedrooms
• 🛁 5 baths
• 🔥 Fireplaces
• 🌅 Panoramic Bay views
• 🚗 2-car garage + studio
• 🏷️ $6,750,000 SOLD FOR $7,600,000

Seamless indoor-outdoor flow, multiple terraces, and a stunning primary suite with fireplace, walk-in closet & private balcony ✨

Minutes to Tiburon’s waterfront, shops, dining & easy SF access 🚗

Thank you for bringing the buyer and for such a smooth transaction

Co-listed with the

04/03/2026

🌟 JUST LISTED – 25 Mark Terrace, Tiburon 🌟

Open House:
📅 Saturday, April 4th | 2:00–4:00 PM
📅 Sunday, April 5th | 1:00–4:00 PM

Private SW-facing cul-de-sac with jaw-dropping panoramic views of the Golden Gate Bridge, Sausalito, Richardson Bay & beyond. Pure Tiburon magic!

This beautifully remodeled contemporary home (≈4,075 sq. ft.) offers 5 bedrooms, 4 baths, hardwood floors, an open-concept kitchen with Calacatta stone, multiple view decks, and seamless indoor-outdoor living. Primary suite feels like a retreat, plus a flexible library with en suite bath. Wellness perks include a private sauna & spa.

Set on 0.48 gated acres featuring a fun miniature golf course — resort vibes meet family warmth.
Minutes to Hwy 101, top schools, Blackie’s Pasture & local restaurants.

💰 $4,995,786 | 🛏 5 Beds | 🛁 4 Full Baths | 📐 4,075 Sq Ft | 0.48 Acres

🔗 https://loom.ly/md4g0Ns

Address

100 Tiburon Boulevard
Mill Valley, CA
94941

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