NookLocal
For Sale

Listing description

Welcome to this 3.73-Acre Sanctuary in the Heart of the Main Line In an era where the Great Estates of Lower Merion are being subdivided and condensed, Hearthstone stands as a defiant outlier. Spanning nearly four lush, level acres in the coveted Indian Creek corridor, this is not just a residence—it is a private ecosystem. It offers a scale of "Land and Liberty" that is virtually extinct in Wynnewood, providing the next steward with a canvas of almost 4 acres to create a generational masterpiece. Commissioned in 1928 by William P. Simpson, President of the Eddystone Manufacturing Company, the estate was born of a singular vision. Simpson personally designed the home to anchor a life of industrial-age grandeur. Known historically as "Hearthstone," the residence served as a beacon of the 1930s social circuit, positioned steps from the Indian Creek Nature Preserve. Today, the house retains its original 13,000+ square feet of grand-scale architecture. With its stone façade, two-level elevator, and soaring enclosed porches overlooking the gardens, the bones of the estate offer a structural integrity and "volume" that modern construction cannot replicate. This home is truly a Lifestyle Without Compromise: While most luxury homes in the district offer proximity or privacy, Hearthstone provides both. The Main Residence: 9,800+ SF of finished living space, with an additional 3500+ SF unfinished, featuring 10 bedrooms and grand entertaining halls awaiting a high-design transformation. The Orchard & Grounds comprise of a flat, oversized yard—rare for the topography of the area—complete with a private fruit orchard and specimen gardens. The Aquatic Pavilion is a classic 10-foot deep in-ground pool anchored by an oversized patio and a dedicated Bathhouse with room for improving the full amenities such as the individual shower facilities and wet bar designed for grand-scale summer galas and garden weddings. The Infrastructure is already equipped with a full-house generator and 5-zoned HVAC, the estate offers a sophisticated head-start on a modern restoration. Hearthstone offers a strategic advantage for the modern family. Situated in the heart of the award-winning Lower Merion School District, it sits at the epicenter of the nation’s most elite private academies, including Baldwin, Haverford, Shipley, and Agnes Irwin. With the Merion Cricket Club and world-class golf just minutes away, the estate offers a seamless blend of secluded sanctuary and social connectivity. This is not Ia finished product; rather it is an opportunity to be the next great steward of a Wynnewood landmark, minutes to the city in an award-winning school district. For the buyer who understands that land is the ultimate luxury, Hearthstone represents a "buy-and-renovate" scenario where the finished value will be personalized to what future buyers want in a luxury home as well as command the top of the Main Line market. Hearthstone is more than a home; it is a 3.73-acre legacy!

Rooms by level

How the bedrooms and baths are distributed across the floors, as reported by the listing agent.

  1. Main level2 half baths
  2. Upper level8 bedrooms · 4 full baths · 1 half bath
  3. Upper level 22 bedrooms · 1 full bath

Facts & features

Interior

Bedrooms
10
Bathrooms
5 full · 3 half
Living area
9,852 sq ft
Heating
Forced Air
Cooling
Central A/C

Property & construction

Property type
Residential · Detached
Architectural style
Colonial
Year built
1928

Lot & parking

Lot size
3.73 acres (162,479 sq ft)

Financial

Price / sq ft
$263
HOA dues
None

Listing details

MLS #
PAMC2166046
County
Montgomery County
School district
Lower Merion
Days on NookLocal
157 days

Interior features

Appliances
Commercial Range, Dishwasher, Freezer, Extra Refrigerator/Freezer, Oven - Double, Oven/Range - Gas, Range Hood, Six Burner Stove, Washer
Flooring
Hardwood, Carpet, Marble, Ceramic Tile
Interior features
Additional Stairway, Attic, Bar, Breakfast Area, Built-Ins, Ceiling Fan(s), Chair Railings, Crown Moldings, Elevator, Family Room Off Kitchen, Floor Plan - Traditional, Formal/Separate Dining Room, and 7 more
Fireplace
3
Fireplace type
Double Sided, Fireplace - Glass Doors
Basement
Connecting Stairway, Full, Interior Access, Unfinished
Laundry
Main Floor
Levels
3
Accessibility
None

Exterior & construction

Construction
Stone
Roof
Slate
Foundation
Other
Exterior features
Extensive Hardscape, Exterior Lighting, Secure Storage, Outbuilding(s)
Patio & porch
Balconies- Multiple, Patio(s), Screened
Doors
Double Entry, Atrium
View
Garden/Lawn, Trees/Woods

Systems & utilities

Heating fuel
Electric, Natural Gas
Cooling fuel
Electric
Hot water
Natural Gas
Water source
Public
Sewer
Public Sewer

Parking

Parking
Driveway, Off Street
Parking features
Circular Driveway, Asphalt Driveway, Paved Driveway, Private
Total spaces
20
Driveway spaces
20

Community

Subdivision
INDIAN CREEK

Lot & zoning

Lot dimensions
See tax map
Lot features
Backs to Trees, Cul-de-sac, Front Yard, Landscaping, Level, Private, and 3 more
Zoning
LDR2
Cross street
Ingeborg Rd

Included in the sale

Inclusions
All appliances, including generator
Exclusions
Owner's personal items
Possession
Negotiable

Price history

DateEventPrice
Feb 20, 2026Listed for sale$2,596,000

Price changes are tracked from when NookLocal first indexed this listing; earlier history may not appear. Tax & assessment details are in the section below.

The NookLocal estimate

Estimated value

$2,767,000

Automated estimate, not an appraisal. Sale records through July 2026.

About this estimate

Based on 10 comparable sales nearby, the Montgomery County assessment ratio, weighted toward the current asking price.

Last sold
June 2010 for $1,297,500
County deed record in 2010 dollars; not comparable to today's value.
Current list price
$2,596,000
County assessment implies
$3,149,262
Est. property taxes at today's rates
$38,684/yr

Comparable Sales

AddressClosedSale priceBd/BaSqftAdjusted value
239-301 OLD GULPH RD, WYNNEWOOD, PA 19096February 2026$1,875,0005/58,166$2,639,552
1120 BRYN TYDDYN DR, GLADWYNE, PA 19035February 2025$3,895,0006/59,845$4,356,974
952 LAFAYETTE RD, BRYN MAWR, PA 19010July 2026$2,860,0006/59,103$3,165,737
235 OLD GULPH RD, WYNNEWOOD, PA 19096October 2025$2,315,0007/68,478$2,808,812
226 MCCLENAGHAN MILL RD, WYNNEWOOD, PA 19096February 2026$2,900,0005/57,556$4,300,191
717 N SPRING MILL RD, VILLANOVA, PA 19085March 2026$2,500,0006/69,275$3,172,874

Estimated taxes

Estimated at current rates

$43,072 / year

$3,589 per month

MLS shows (2025)

$44,238

-2.6% at current rates

School tax

LOWER MERION · 35.27 mills (2025-26)

$33,098

County tax

Montgomery County · 5.95 mills (2026)

$5,586

Municipal tax

As recorded for 2025, varies by municipality

$4,388

Recomputed from the county assessment ($938,480, 1996 base year) × current millage. School millage is from the latest year certified by the Pennsylvania Department of Education (2025-26); districts adopt the next year's budgets each June, and we update when the state certifies the statewide file in the fall. Portals typically reprint the recorded 2025 bill. Pennsylvania does not reassess on sale. Estimate only. Verify with Montgomery County before relying on it. Learn more: PA property tax calculator · Common Level Ratio by county.

Estimated monthly payment calculator

$519,200 (20%)
6.43%

Loan term

Estimated monthly payment

$17,378/mo

Principal & interest
$13,031
Property taxes (current rates)
$3,589
Home insurance (est.)
$757

Taxes use NookLocal's estimate at current millage rates, not the stale figure on the MLS. The default rate is the average 30-year rate as of July 2026; insurance is estimated at 0.35% of the price per year. Below 20% down, lenders usually add mortgage insurance, which this estimate doesn't include. Estimate only; verify before relying on it.

Area statistics

School district

Lower Merion

Academic index
86.9/100
Graduation rate
97.8%
PSSA ELA proficient
82.1%
PSSA Math proficient
81.1%

2025 PA state assessments (PSSA / Keystone) and graduation data. The index measures student outcomes, not school effectiveness, and is not adjusted for demographics. Districts serve all residents; verify enrollment boundaries with the district.

Safety data

Montgomery County crime & safety numbers →

County figures from FBI and Pennsylvania source data.

Property taxes

Montgomery County taxes, explained →

Millage, the Common Level Ratio, and what changes after you buy.

© BRIGHT, All Rights Reserved

Information Deemed Reliable But Not Guaranteed

The data relating to real estate for sale on this website appears in part through the BRIGHT Internet Data Exchange program, a voluntary cooperative exchange of property listing data between licensed real estate brokerage firms in which United Real Estate Strive 212 participates, and is provided by BRIGHT through a licensing agreement.

IDX listings are displayed pursuant to broker of record United Real Estate Strive 212, Frank Ramos, Broker/Owner, PA Broker License RM424345, 1220 Broadcasting Rd, Suite 201, Wyomissing, PA 19610, (610) 372-0212.

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Some properties which appear for sale on this website may no longer be available because they are under contract, have Closed or are no longer being offered for sale.

Data last updated: July 27, 2026 at 2:03 PM EDT

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