The Largest House in Maryland: Top 5 Massive Estates

The Largest House in Maryland

Maryland doesn’t do loud money. Unlike Miami or Beverly Hills, where big homes sit right on the street for everyone to see, Largest House in Maryland hide behind trees, long driveways, and private gates along the Potomac River and the Eastern Shore. I’m Stefano Schiavon, and through Rivon Home I look at what separates a big house from a genuinely well-designed one.

Owners here include a physician, an Eastern Shore land holder, and a handful of private buyers who never show up in the press. At the top of this list sits a 55,000-square-foot French château — the largest and most private home in the state, tucked so far behind gates and untouched Eastern Shore land that most Marylanders have never seen it, even from the road.

Map of the Largest Houses in Maryland

I’m not listing exact coordinates here. These are private residences, and pinpointing driveways or gate locations isn’t something I’ll do out of respect for the owners. What I can tell you is where the clusters are. Potomac, specifically the River Road corridor, holds three of the Largest House in Maryland. The Eastern Shore, around Easton and the Miles River, holds the priciest one. Annapolis rounds it out with waterfront acreage near the Severn.

My Personal Tour of Top 5 Largest Houses in Maryland

I’ve driven River Road in Potomac more than once, and it never looks like what you’d expect from “Largest House in Maryland No gold gates, no visible fountains from the street. Just stone walls, mature trees, and long gravel drives disappearing into the woods. That’s the local philosophy: scale without spectacle. Compare that to Easton, where Fairview Estate sits on 76 acres of open shoreline, visible from the water even if it’s invisible from the road.

As an architect, what strikes me about these properties is restraint. A 55,000-square-foot house could easily look like a hotel. The ones on this list use stone, slate, and layered rooflines to keep that scale feeling residential. That’s a principle worth borrowing even for a home a fraction of this size, and it’s something I talk through often on our Home Decor page.

Top 5 Largest Houses in Maryland List

Top 5 Largest House in Maryland: Inside the State’s Most Massive, Luxurious, and Jaw-Dropping Mansions You Won’t Believe Exist

1. The Willowbrook Drive Estate, Potomac — 55,000 Sq Ft

  • Location: Willowbrook Drive, Potomac, MD 20854
  • Interior size: Over 55,000 square feet
  • Owner: Dr. Inder Chawla
  • Style: French château
  • Estimated value: Roughly $5–7 million
  • Notable features: Grand dual staircase, infinity pool, extensive landscaped grounds

This is the Largest House in Maryland by interior square footage, and no other property on this list comes close. The French château design uses tall arched windows and a layered roofline to keep the scale from feeling like a commercial building. Inside, the floor plan spreads across formal reception rooms, multiple bedroom suites, and grounds built for entertaining.

What surprised me most researching this one is the value gap. At an estimated $5–7 million, it’s priced well below several smaller homes on this list, which tells you square footage alone doesn’t set price in this market. Land, location, and river frontage matter more.

Largest House in Maryland
1. The Willowbrook Drive Estate, Potomac — 55,000 Sq Ft

2. Norton Manor, Potomac — 47,000 Sq Ft

  • Location: Potomac, MD
  • Interior size: 47,000 square feet
  • Lot size: 9 acres
  • Build time: Six years
  • Design inspiration: The White House and U.S. Capitol
  • Notable features: Domed profile, formal columns, symmetrical facade

Norton Manor was built to echo the White House and the Capitol, and the six-year construction timeline shows in the level of detail. It’s the second-largest home in Maryland by footprint, sitting on nine acres that give it room most Potomac properties can’t match. Ownership and current pricing aren’t publicly disclosed, which is common for homes at this scale.

Largest House in Maryland 2. Norton Manor, Potomac — 47,000 Sq Ft

3. 1604 Winchester Rd, Annapolis — 35,435 Sq Ft

  • Location: Winchester Rd, Annapolis, MD 21409
  • Interior size: 35,435 square feet
  • Asking price: $19,995,000
  • Bedrooms/Bathrooms: 7 beds, 13 baths

This Annapolis estate is the largest home on the Chesapeake side of the state, currently listed just under $20 million. Thirteen bathrooms spread across the floor plan is unusual even for this list, and it points to a home built for large-scale entertaining rather than a single family’s daily use. Waterfront access this close to Annapolis carries a premium because deep-water shoreline is tightly regulated.

Largest House in Maryland
3. 1604 Winchester Rd, Annapolis — 35,435 Sq Ft

4. 11900 River Rd, Potomac — 25,119 Sq Ft

  • Location: 11900 River Rd, Potomac, MD 20854
  • Interior size: 25,119 square feet
  • Lot size: 13.5 acres
  • Asking price: $29,900,000
  • Built: 2004
  • Architect/Designer: John Ike, with interiors by Geoffrey Bradfield

This estate sits on a knoll above the Potomac, reached by a half-mile tree-lined drive. Architect John Ike wrapped it in limestone under a slate mansard roof, with interiors by Geoffrey Bradfield. A separate three-level guesthouse holds 11 garage bays, built to double as an event space, and a 4,500-square-foot staff house sits near the entrance.

Largest House in Maryland
4. 11900 River Rd, Potomac — 25,119 Sq Ft

5. Fairview Estate, Easton — 14,300 Sq Ft Main House

  • Location: Easton, Talbot County, MD (Eastern Shore)
  • Interior size: 14,300 square feet (main house); 6,150 square feet (historic house)
  • Asking price: $40 million
  • Land: 76 acres with direct Miles River frontage

Fairview is the smallest home on this list by square footage, but it’s Largest House in Maryland listed property—even outpricing The Biggest House in Arizona. The massive value comes from a rare zoning variance allowing multiple full residences, a private nine-hole golf course, and nearly three-quarters of a mile of protected Chesapeake Bay shoreline. The historic main house features framing dating to roughly 1670, finished with elegant Greek Revival additions layered on in the 1800s.

Largest House in Maryland
5. Fairview Estate, Easton — 14,300 Sq Ft Main House

Price Per Square Foot: How These Largest House in Maryland Compare

PropertyTownSize (Sq Ft)PricePrice/Sq Ft
Fairview EstateEaston14,300 (main house)$40,000,000~$2,797
11900 River RdPotomac25,119$29,900,000~$1,190
1604 Winchester RdAnnapolis35,435$19,995,000~$564
Willowbrook DrivePotomac55,000~$7,200,000 (est.)~$131
Norton ManorPotomac47,000Not publicly listed

The pattern in Maryland is clear: waterfront acreage drives price per square foot far more than interior size does. Fairview’s 76 acres of Miles River frontage push its rate over $2,700 per square foot. Meanwhile Willowbrook, despite being the Largest House in Maryland, sits under $150 per square foot with no direct river frontage. Much like analyzing the Largest House in Georgia, real estate value relies heavily on location and land

Still Owned vs. Already Sold

  • Willowbrook Drive Estate: Privately owned by Dr. Inder Chawla, not currently on the market.
  • Norton Manor: Privately held; current ownership and sale status aren’t publicly disclosed.
  • 1604 Winchester Rd: Actively listed for sale at $19,995,000.
  • 11900 River Rd: Actively listed for sale at $29,900,000, after a prior price cut from $34.9 million.
  • Fairview Estate: Actively listed for sale at $40 million.

Three of the five Largest House in Maryland are currently on the market, which is unusual. It suggests a window for buyers who want a legacy-scale property without a bidding war, though pricing at this level still moves slowly.

Largest House in Maryland
Still Owned vs. Already Sold

Other Additional Notable Homes in Maryland

These didn’t make the top 5 Largest House in Maryland, but they’re worth knowing if you’re studying Maryland’s luxury market:

Largest House in Maryland
Other Additional Notable Homes in Maryland
  • Casa de Amor, Potomac — A Spanish-style landmark on River Road’s “Millionaire’s Mile,” roughly 13,000 square feet with towers, turrets, and a red-tile roof.
  • The POD, Severn River — A 7+ acre waterfront compound along Forked Creek, built for large-scale entertaining.
  • Twin Ponds, Montgomery County — An old-world estate designed by Spence Kass & Associates using reclaimed materials.
  • Potomac River Overlook Home — A 12,000-square-foot residence by Franck & Lohsen Architects, built in 2013 and modeled after the owner’s family home in Tennessee.
  • Sagamore Farm, Worthington Valley — A historic 1925 Thoroughbred racing estate once owned by Alfred G. Vanderbilt Jr.

How Maryland Scaled Big While Staying Under the Radar

Largest House in Maryland aren’t built to be seen from the street, and that’s the point. Montgomery County and the Eastern Shore still have large, unbroken parcels of land, something Bethesda and Chevy Chase ran out of decades ago. Zoning plays a role too. Fairview’s multiple structures on one lot are only legal because of a variance that predates current rules; new construction can’t replicate that setup today.

Compare that to Miami or Beverly Hills, where visibility often drives value. In Maryland, privacy and river frontage do that job instead. A long, gated driveway—much like the entrance to the Largest House in Alabama—isn’t for show. It’s the actual product being sold.

Conclusion

Finding the Largest House in Maryland means looking past price tags and toward land, zoning, and privacy, since those three things shape this market more than square footage alone. Willowbrook wins on pure size, Fairview wins on price and history, and the other three sit somewhere in between, each shaped by the same scarcity of large, private land near water.

If you’re pulling design ideas from homes like these Largest House in Maryland, even one detail — a material choice, a proportion, a restrained roofline — can change how a room feels, whatever the scale. You’ll find more of that thinking on our Home Decor page. For general design standards, the American Institute of Architects is a solid independent resource, and for questions on shoreline construction rules, the Maryland Department of the Environment covers what’s permitted along the water.

Frequently Asked Questions

What is the largest house in Maryland?

The Willowbrook Drive estate in Potomac, owned by Dr. Inder Chawla, holds that title at over 55,000 square feet, built in the French château style.

What is the most expensive house in Maryland?

Fairview Estate in Easton, listed at $40 million across 76 acres, is currently the priciest property in the state.

Where are Largest House in Maryland located?

Mostly in Potomac along the Potomac River, plus Easton and Annapolis on the Eastern Shore and Chesapeake side, where large lots and water frontage still exist.

Are any of these Largest House in Maryland open to the public?

No ,all Largest House in Maryland are private . Details here come from public listing records, permits, and press coverage, not from home tours.