OFF MARKET

Off Market Nov 1993 for $560K

$1,772,782

Est. refi paymentEst. refi $3,672/mo

•

5.5 ba

•

3,601

sq ft

879 Blackburn Rd, Sewickley, PA 15143

About this home

Through historic stone gates along the storied Blackburn Road, Gladmore Farm emerges as a rare offering in one of Sewickley Heights’ most coveted settings. Elevated and private, the 6.7-acre grounds pair the enduring grace of early 20th-century craftsmanship with the promise of an extraordinary future. The existing residence, thoughtfully reimagined, offers four ensuite bedrooms and a luminous, decorator-designed kitchen. A long, winding approach reveals a home hidden from view, enveloped in quiet seclusion. Here, the legacy of Gladmore Farm becomes the foundation for your vision—whether preserving its refined presence or creating an entirely new estate on this unparalleled high-elevation site. In this exclusive enclave, history and possibility meet in timeless harmony.

Single-familyProperty Type

1957Year Built

6.71 acresLot Size

$492Est. Price/Sq.Ft.

2 spacesParking

Listed by • PIATT SOTHEBY'S INTERNATIONAL REALTY

Source:West Penn MLS #1715876

Redfin Estimate

$1,772,782

$1.2M since sold in November 1993$31K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.4% higher than the average sale price ($1.71M) of 6 comparable homes.

SOLD MAY 4, 2026
$1,910,000
A
4 beds4.5 baths3,715 sq ft
855 Blackburn Rd, Sewickley, PA 15143
SOLD JUN 5, 2026
$1,800,000
B
4 beds3.5 baths4,051 sq ft
661 Canterbury Ln, Sewickley, PA 15143
SOLD JUN 30, 2026
$1,500,000
C
4 beds5.5 baths4,180 sq ft
552 Backbone Rd, Sewickley, PA 15143
SOLD AUG 3, 2026
$2,050,000
D
4 beds4.5 baths5,166 sq ft
600 Backbone Rd, Sewickley, PA 15143
SOLD SEP 26, 2025
$1,625,000
E
4 beds4.5 baths3,763 sq ft
881 Blackburn Rd, Sewickley, PA 15143
SOLD JUL 27, 2026
$1,400,000
F
5 beds4 baths3,859 sq ft
610 Davis Ln, Sewickley, PA 15143

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Earn from this home

Sell

$1,668,940

Est. take-home

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Refinance

Est. cash available

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Rent

$4,169/mo

Redfin rental estimate

List your home for rent

Market trends in 15143, PA

Last updated August 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

97.2%

0.6% MoM

Median sale price

$632K

$2K MoM

Avg. days on market

65d

3 days MoM

Recently sold homes

6 MoM

New listings for sale

OPEN SAT, 1PM TO 3PM
$485,000
3 beds2 baths1,680 sq ft
143 Camp Meeting Road Ext, Sewickley, PA 15143
RE/MAX SELECT REALTY
NEW 5 HRS AGO
$350,000
4 beds2 baths2,237 sq ft
311 Redgate Rd, Sewickley, PA 15143
RE/MAX SELECT REALTY
3D WALKTHROUGH
$999,900
4 beds3.5 baths2,880 sq ft
143 Backbone Rd, Sewickley, PA 15143
HOWARD HANNA REAL ESTATE SERVICES
$450,000
3 beds2.5 baths2,412 sq ft
139 Melinda Ct, Sewickley, PA 15143
COLDWELL BANKER REALTY
3D & VIDEO TOUR
$528,900
4 beds3.5 baths2,332 sq ft
211 Dana Dr, Sewickley, PA 15143
BERKSHIRE HATHAWAY THE PREFERRED REALTY
VIDEO TOUR
$695,000
4 beds2.5 baths— sq ft
713 Centennial Ave, Sewickley, PA 15143
PIATT SOTHEBY'S INTERNATIONAL REALTY
$950,000
4 beds3.5 baths3,002 sq ft
114 Hidden Valley Ct, Sewickley, PA 15143
COLDWELL BANKER REALTY
VIDEO TOUR
$2,995,000
3 beds5 baths3,668 sq ft
443 Walnut St, Sewickley, PA 15143
PIATT SOTHEBY'S INTERNATIONAL REALTY
$350,000
3 beds2.5 baths2,048 sq ft
2417 Nicholson Rd, Sewickley, PA 15143
KELLER WILLIAMS STEEL CITY
VIDEO TOUR
$1,295,000
5 beds4.5 baths3,747 sq ft
1038 Blackberry Dr, Sewickley, PA 15143
PIATT SOTHEBY'S INTERNATIONAL REALTY
See all

Provided by Redfin

Sale history for 879 Blackburn Rd

Date

Event

Price

West Penn MLS #1715876

Aug 7, 2026

Delisted

—

Jul 13, 2026

Relisted

—

Apr 17, 2026

Relisted

—

Feb 23, 2026

Relisted

—

Dec 5, 2025

Price Changed

$4,495,000

$1,248/sq ft

Oct 27, 2025

Relisted

—

Oct 27, 2025

Price Changed

$4,900,000

$1,361/sq ft

Aug 11, 2025

Listed

$3,950,000

$1,097/sq ft

+45

WPMLS #1715921

Jun 15, 2026

Rental Removed

$25,000

$7/sq ft

Apr 18, 2026

Listed for Rent

$25,000

$7/sq ft

Feb 5, 2026

Rental Removed

$25,000

$7/sq ft

Nov 22, 2025

Listed for Rent

$25,000

$7/sq ft

Oct 16, 2025

Rental Removed

$25,000

$7/sq ft

Aug 12, 2025

Listed for Rent

$25,000

$7/sq ft

West Penn MLS #1666737

Aug 8, 2024

Listed

$5,900,000

$1,638/sq ft

West Penn MLS #1625302

Sep 28, 2023

Listed

$5,900,000

$1,638/sq ft

West Penn MLS #1204160

Jul 22, 2016

Delisted

—

Jan 20, 2016

Listed

$1,950,000

$542/sq ft

West Penn MLS #1204115

Jul 22, 2016

Delisted

—

Jan 20, 2016

Listed

$1,950,000

$542/sq ft

West Penn MLS #1066655

Dec 8, 2015

Delisted

—

Jul 8, 2015

Listed

$1,650,000

$458/sq ft

West Penn MLS #1009711

May 23, 2015

Delisted

—

Apr 10, 2015

Listed

$1,895,000

$526/sq ft

West Penn MLS #857343

Feb 11, 2011

Listed

$1,995,000

$554/sq ft

Public Records

Nov 8, 1993

Sold

$560,753

$156/sq ft

Year

Property tax

Land + Additions

Assessment*

2026

$28,690 (+2.5%)

$323,300 + $520,400

$843,700

2025

$27,982 (+7.5%)

$323,300 + $520,400

$843,700

2024

$26,035 (+2.0%)

$323,300 + $520,400

$843,700

2023

$25,536 (+1.9%)

$323,300 + $520,400

$843,700

2022

$25,059

$323,300 + $520,400

$843,700

2021

$25,059

$323,300 + $520,400

$843,700

2020

$25,059 (+1.9%)

$323,300 + $520,400

$843,700

2019

$24,584 (+1.8%)

$323,300 + $520,400

$843,700

2018

$24,156 (+4.2%)

$323,300 + $520,400

$843,700

2017

$23,175 (+5.8%)

$323,300 + $520,400

$843,700

2015

$21,911

$323,300 + $520,400

$843,700

Tax history for 879 Blackburn Rd

Year

Property tax

Land + Additions

Assessment*

2026

$28,690 (+2.5%)

$323,300 + $520,400

$843,700

2025

$27,982 (+7.5%)

$323,300 + $520,400

$843,700

2024

$26,035 (+2.0%)

$323,300 + $520,400

$843,700

2023

$25,536 (+1.9%)

$323,300 + $520,400

$843,700

2022

$25,059

$323,300 + $520,400

$843,700

2021

$25,059

$323,300 + $520,400

$843,700

2020

$25,059 (+1.9%)

$323,300 + $520,400

$843,700

2019

$24,584 (+1.8%)

$323,300 + $520,400

$843,700

2018

$24,156 (+4.2%)

$323,300 + $520,400

$843,700

2017

$23,175 (+5.8%)

$323,300 + $520,400

$843,700

2015

$21,911

$323,300 + $520,400

$843,700

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Property details

Interior

Basement Information
Basement Type: Full

Bathroom Information
# of Full Baths: 4
# of 1/2 Baths: 3

Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central

Fireplace Information
# of Fireplaces: 1
Has Fireplace

Room Information
# of Rooms: 10

Exterior

Exterior Information
Physical Condition: Good
Building Style Type: Colonial
Building Construction Quality: Excellent
Exterior Wall: Brick

Property Information
Living Sq. Ft: 3,601
# of Stories: 2
Stories Type: 2
Legal Description: 6.710 ALD BLACKBURN RD IMP-DESC: 2 STY BRK DWLG & INT GAR 1 STY FRA EQUIP SHED

Lot Information
# of Buildings: 1
Land Sq. Ft: 292,288
Legal Lot Number: 25
Legal Block Number: 509
School Tax District: QUAKER VALLEY
Municipality Name: SEWICKLEY HTS BORO
Acres: 6.71
County Use Description: SINGLE FAMILY
State Use Description: RESIDENTIAL

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 5
Baths: 5.5
Sq. Ft.: 3,601
Stories: 2.0
Lot Size: 6.71 acres
Style: Single Family Residential
Year Built: 1957
Year Renovated: —
County: Allegheny County
APN: 0509C00025000000

Home facts updated by county records on Jul 20, 2026

Around this home

Schools

Edgeworth Elementary School

Public K-5 • Assigned • 1.9mi

8/10

Quaker Valley Middle School

Public 6-8 • Assigned • 1.6mi

9/10

Quaker Valley High School

Public 9-12 • Assigned • 2.7mi

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

3/10 Heat Factor

7 days above 97° expected this year, 16 days in 30 years

2/10 Wind Factor

Minor risk of severe winds over next 30 years

3/10 Air Factor

2 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Sewickley, PA • 15143

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

69/ 100

Moderate sunlight

Sunscore

There appears to be some shading by surrounding buildings, terrain, and vegetation.

9.6 hrs

3.2 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.69M – $2.04M

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Nearby similar homes

$14,900

Land— sq ft

932 Crescent Ave, Sewickley, PA 15143

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3 beds2 baths1,232 sq ft

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HOWARD HANNA REAL ESTATE SERVICES

$550,000

4 beds1.5 baths2,012 sq ft

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COMPASS PENNSYLVANIA, LLC

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KELLER WILLIAMS REALTY

3D WALKTHROUGH

$575,000

3 beds2.5 baths2,772 sq ft

657 Maple Ln, Sewickley, PA 15143

BERKSHIRE HATHAWAY THE PREFERRED REALTY

$224,000

3 beds2 baths1,320 sq ft

1 Fawcett Cir, Coraopolis, PA 15108

Venture Home Real Estate, LLC

New listings for sale in 15143

OPEN SAT, 1PM TO 3PMVIDEO TOUR

$485,000

3 beds2 baths1,680 sq ft

143 Camp Meeting Road Ext, Sewickley, PA 15143

RE/MAX SELECT REALTY

NEW 5 HRS AGO

$350,000

4 beds2 baths2,237 sq ft

311 Redgate Rd, Sewickley, PA 15143

RE/MAX SELECT REALTY

3D WALKTHROUGH

$999,900

4 beds3.5 baths2,880 sq ft

143 Backbone Rd, Sewickley, PA 15143

HOWARD HANNA REAL ESTATE SERVICES

$450,000

3 beds2.5 baths2,412 sq ft

139 Melinda Ct, Sewickley, PA 15143

COLDWELL BANKER REALTY

3D & VIDEO TOUR

$528,900

4 beds3.5 baths2,332 sq ft

211 Dana Dr, Sewickley, PA 15143

BERKSHIRE HATHAWAY THE PREFERRED REALTY

VIDEO TOUR

$695,000

4 beds2.5 baths— sq ft

713 Centennial Ave, Sewickley, PA 15143

PIATT SOTHEBY'S INTERNATIONAL REALTY

$950,000

4 beds3.5 baths3,002 sq ft

114 Hidden Valley Ct, Sewickley, PA 15143

COLDWELL BANKER REALTY

VIDEO TOUR

$2,995,000

3 beds5 baths3,668 sq ft

443 Walnut St, Sewickley, PA 15143

PIATT SOTHEBY'S INTERNATIONAL REALTY

$350,000

3 beds2.5 baths2,048 sq ft

2417 Nicholson Rd, Sewickley, PA 15143

KELLER WILLIAMS STEEL CITY

Home values near 879 Blackburn Rd

Data from public records.

Address	Redfin Estimate
894 Blackburn Rd, Sewickley, PA 1 Beds \| 1 Baths \| 12033 Sq. Ft.	$2,729,238
863 Blackburn Rd, Sewickley, PA 4 Beds \| 3.5 Baths \| 3490 Sq. Ft.	$1,387,891

Address	Redfin Estimate
877 Blackburn Rd, Sewickley, PA 4 Beds \| 4.5 Baths \| 3449 Sq. Ft.	$1,592,891
867 Blackburn Rd, Sewickley, PA 3 Beds \| 1.5 Baths \| 2335 Sq. Ft.	$641,827

Address	Redfin Estimate
881 Blackburn Rd, Sewickley, PA 4 Beds \| 4.5 Baths \| 3763 Sq. Ft.	$1,679,026
862 Blackburn Rd, Sewickley, PA 5 Beds \| 4.5 Baths \| 5288 Sq. Ft.	$2,336,611

Property information provided by West Penn MLS when last listed in 2026. This data may not match . Learn more.

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About this home

Redfin Estimate

Earn from this home

Market trends in 15143, PA

Sale history for 879 Blackburn Rd

Tax history for 879 Blackburn Rd

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 15143

Home values near 879 Blackburn Rd

More real estate resources