Welcome to the iconic Shapiro House, a masterpiece designed by the renowned architect Louis Kahn, nestled into the picturesque slopes of Penn Valley, Pennsylvania. This extraordinary residence is a testament to Kahn's genius in blending modernist architecture with the surrounding natural landscape. As you approach the Shapiro House, you'll immediately notice how it seamlessly integrates into the hillside, appearing to emerge from the earth itself. Kahn's vision for the house was to harmoniously blend with the environment while offering breathtaking views of the lush outdoors. Upon entering the house, you'll be greeted by a striking spatial arrangement that exemplifies Kahn's brilliant floor plan. The living quarters are ingeniously placed on the upper level, allowing residents to bask in the serene beauty of the surrounding landscape. Large-format windows stretch from floor to ceiling, acting as frames to the panoramic views outside. During the day, the abundant natural light floods the interior, creating an airy and inviting atmosphere. At night, the absence of electric lights allows the exterior night lighting to reflect off the white walls, making the interior seemingly glow in a warm and ethereal ambiance. The interior wood details further enhance the house's character, adding a touch of warmth and craftsmanship to the minimalist design. Kahn's meticulous use of natural materials brings a sense of comfort and timelessness to the living space. As you descend to the garden level, you'll find the private sanctuary of the house – the bedrooms. Designed to provide a tranquil retreat, these spaces open up to the surrounding garden, making you feel as if you're part of nature itself. The cleverly placed windows and sliding doors blur the boundary between indoor and outdoor, inviting fresh air and natural scents to permeate the living spaces. One of the defining features of the Shapiro House is its soaring high ceilings. The vertical expanses give a sense of grandeur, and together with the generous windows, they create a feeling of openness and freedom, enhancing the connection between the interior and the exterior. Living in the Shapiro House is like living in an ever-changing work of art, as the seasons transform the landscape and the play of natural light casts dynamic shadows and reflections on the white interior walls. This architectural marvel is more than just a dwelling; it is a celebration of nature, light, and space. The Shapiro House stands as a timeless testament to Louis Kahn's mastery, offering an unparalleled living experience where you can truly enjoy the outdoors while being comfortably nestled within the embrace of this iconic home.
Single-familyProperty Type
1960Year Built
1.19 acresLot Size
$301Est. Price/Sq.Ft.
Listed by Lavinia Smerconish• Compass RE
•610-615-5400 (broker)
•kenenochs@compass.com (broker)
Bought with Steph Slapin• Keller Williams Philadelphia
The home is accessible by the driveway that slopes down from the street. There are numerous doors that lead to the outside. The backyard does not have grass but does have some landscaping.
3 years ago• May not reflect the current state of the home
Kevin Motroni
Redfin Associate agent
Sale history for 417 Hidden River Rd
Date
Event
Price
BRIGHT MLS #PAMC2088204
Feb 1, 2024
Sold
$790,000
$221/sq ft
Jan 29, 2024
Pending
—
Jan 3, 2024
Contingent
—
Dec 6, 2023
Price Changed
$829,000
$232/sq ft
Nov 3, 2023
Listed
$870,000
$243/sq ft
BRIGHT MLS #PAMC2079050
Nov 3, 2023
Listing Removed
—
Aug 12, 2023
Listed
$875,000
$244/sq ft
BRIGHT MLS #PAMC624008
Apr 22, 2020
Sold
$750,000
$210/sq ft
Mar 10, 2020
Pending
—
Feb 24, 2020
Relisted
—
Feb 11, 2020
Pending
—
Sep 6, 2019
Listed
$1,000,000
$279/sq ft
+24
The owner of this home had world renowned architect Louis Kahn design it in 1960, complete with all documentation to authenticate. A fabulous example of a mid-century home located in Penn Valley, Pa. with an easy commute to Center City Philadelphia. You can be the 2nd person to own this wonderful piece of history!
Year
Property tax
Land + Additions
Assessment*
2026
$13,788 (+4.6%)
2025
$13,182 (+5.4%)
2024
$12,508 (+4.4%)
2023
$11,986 (+1.9%)
2022
$11,764 (+2.3%)
2021
$11,496 (+2.5%)
2020
$11,215 (+1.8%)
2019
$11,017 (+1.9%)
2018
$10,815 (+1.9%)
2017
$10,612 (+8.5%)
2015
$9,785 (+6.0%)
2014
$9,232
2013
$9,232 (+3.1%)
2011
$8,958 (+4.0%)
2010
$8,615 (+3.6%)
2009
$8,319
Tax history for 417 Hidden River Rd
Year
Property tax
Land + Additions
Assessment*
2026
$13,788 (+4.6%)
2025
$13,182 (+5.4%)
2024
$12,508 (+4.4%)
2023
$11,986 (+1.9%)
2022
$11,764 (+2.3%)
2021
$11,496 (+2.5%)
2020
$11,215 (+1.8%)
2019
$11,017 (+1.9%)
2018
$10,815 (+1.9%)
2017
$10,612 (+8.5%)
2015
$9,785 (+6.0%)
2014
$9,232
2013
$9,232 (+3.1%)
2011
$8,958 (+4.0%)
2010
$8,615 (+3.6%)
2009
$8,319
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Beds
5
Baths
3.5
Stories
1
Lot width
64 ft.
Lot depth
—
Lot size
1.19 Acres
Year renovated
—
Sq. Ft.
3,579
Year built
1960
Style
Single Family Residential
County
Montgomery County
APN
400025036007
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Aug 5, 2026.
LDR2
Low Density Residential Districts
LDR2 is a low intensity district intended for detached single-family residential homes and the preservation of the existing neighborhood character.
Permitted uses
Include but are not limited to:
Agriculture
Housing-Single unit
Infrastructure
Property details
Parking
Parking Information
Driveway
Interior
Bedroom Information
# of Bedrooms On Main Level: 1
# of Bedrooms On 1st Lower Level: 3
Bathroom Information
# of Bathrooms (Half) On Main Level: 1
# of Bathrooms (Full) On Main Level: 1
# of Bathrooms (Full) On 1st Lower Level: 2
# of Bathrooms (Full) On All Lower Levels: 2
# of Bathrooms (Half): 1
# of Bathrooms (Full): 3
Interior Information
Appliances: Cooktop, Dishwasher, Oven - Single, Oven/Range - Gas, Water Heater
Flooring Type: Hardwood
Not Furnished
Interior Features: Dining Area, Exposed Beams, Floor Plan - Open, Formal/Separate Dining Room, Built-Ins, Master Bath(s), Tub Shower, Wood Floors
Living Area Sq.Ft. Source: Assessor
Room Information
Laundry Type: Lower Floor
Fireplace Information
Has Fireplace
# of Fireplaces: 2
Basement Information
Basement: Yes
Full
Exterior
Property Information
Total Below Grade Sq. Ft.: 1000
Ownership Interest: Fee Simple
Year Built Source: Assessor
Building Information
Construction Materials: Stucco
Foundation Details: Concrete Perimeter
Other Structures: Above Grade, Below Grade
Roof: Asphalt
Structure Type: Detached
Architect Name: Louis Kahn
Exterior Information
Stone Retaining Walls
Lot Information
Lot Features: Backs to Trees, Front Yard, Landscaping, Partly Wooded, SideYard(s)
Lot Size Dimensions: 64.00 x 0.00
Lot Dimensions Source: Assessor
Tidal Water: No
Above Grade Information
Finished Sq.Ft.: 2,579
Finished Sq.Ft. Source: Assessor
Below Grade Information
Unfinished Sq.Ft. Source: Assessor
Finished Sq.Ft.: 1,000
Finished Sq.Ft. Source: Assessor
Financial
Tax Information
City/Town Tax: $1,254
County Tax: $1,268
School Tax: $9,701
School Tax Payment Frequency: Annually
Tax Assessed Value: $299,490
Tax Year: 2023
Tax Annual Amount: $12,342
Lease Information
Lease Considered: No
Utilities
Utilities Information
Central Air
Cooling Type: Central A/C
Cooling Fuel: Electric
Forced Air
Heating Fuel: Natural Gas, Electric
Hot Water: Natural Gas, Electric
Sewer Septic: Public Sewer
Water Source: Public
Location
School Information
Elementary School: BELMONT HILLS
Middle Or Junior School: WELSH VALLEY
High School: HARRITON SENIOR
School District Name: LOWER MERION
Elementary School Source: 3rd Party
Middle School Source: 3rd Party
High School Source: 3rd Party
School District Source: 3rd Party
Location Information
Directions: Left on Old Gulph Rd to right on Hagys Ford Rd to Right on Flat Rock Rd and then Left on Hidden River Rd.
Location Type: Suburban
Municipality: LOWER MERION TWP
Public facts
Beds: 5
Baths: 3.5
Sq. Ft.: 3,579
Stories: 1.0
Lot Size: 1.19 acres
Style: Single Family Residential
Year Built: 1960
Year Renovated: —
County: Montgomery County
APN: 400025036007
Home facts updated by county records on Aug 5, 2026
Around this home
Schools
Welsh Valley Middle School
Public 5-8 • Assigned • 0.8mi
9/10
Harriton Senior High School
Public 9-12 • Assigned • 3.6mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
5/10 Heat Factor
7 days above 102° expected this year, 15 days in 30 years
6/10 Wind Factor
27% chance of strong winds in next 30 years
4/10 Air Factor
4 unhealthy days expected this year, 5 days in 30 years
Provided by First Street
Historical weather
Penn Valley, PA • 19072
Average low and high temperatures (°F)
36
23
41
27
59
38
67
46
73
55
84
65
88
70
82
63
79
61
69
48
56
39
42
28
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 8.9 hours in
June and 4.3 hours in December, placing it below the
U.S. average for solar exposure.
8.9 hrs
4.3 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.02M – $1.24M
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