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Photo 1 of 35: Welcome to 646 Science Street, a stunning architec
Welcome to 646 Science Street, a stunning architec
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646 Science Street, Mt Washington, PA 15210

Allegheny-South County

Key Facts

3Beds
3Baths
3,252Sq Ft
2020Year Built
0.10Lot (acres)
2Garage
3Stories

Description

Welcome to 646 Science Street, a striking modern 3-bedroom, 4-bath residence meticulously designed by Cipriani Studios, ideally located in the heart of Mt. Washington. From the moment you enter through the dramatic pivot entry door, the home makes an immediate impression with clean architectural lines, sophisticated finishes, oversized windows, and an abundance of natural light. The first floor features a stunning open-concept layout, highlighted by the gourmet kitchen, great room, and dining area, creating a seamless space ideal for entertaining and everyday living. This level also includes a powder room, access to a large rear deck constructed of low-maintenance materials, and a front-facing balcony, offering multiple outdoor spaces to relax and entertain. Designed for effortless smart living, the home is equipped with Control4 automation, 18 Paradigm in-ceiling speakers, motorized blinds, Ecobee thermostats, and a Vector security system. Fry Reglet trim is thoughtfully utilized throughout to create the illusion of floating floors and showcase the home’s refined modern aesthetic. The chef’s kitchen is a true centerpiece, featuring Calacatta quartz countertops with a waterfall edge, abundant cabinetry, a 42" Sub-Zero French-door refrigerator, 48" Wolf gas range with griddle and pot filler, Wolf wall oven and microwave, and a Miele stainless dishwasher. An adjacent wet bar accented with bold Broadway Black Velvet quartz includes a Marvel professional beverage center and a dual-zoned under-counter wine unit, adding both function and dramatic style. Upstairs, the spacious primary suite is a private retreat featuring floor-to-ceiling windows, a dramatic 18’ x 12’ tiled accent wall, and access to a private balcony. The suite also includes a large walk-in closet with an in-suite washer and dryer. The spa-like primary bath, enhanced by backlit mirrors, offers a heated Kohler soaking tub with bubble massage and a fully customizable 7-spray Kohler digital shower system, controlled by an in-shower digital touchpad. Two additional bedrooms are located on this level, each offering generous closet space and striking feature walls. The hall bath is beautifully appointed with a dual vanity featuring vessel sinks and a single, backlit mirror, providing both style and functionality. The entrance level enhances everyday convenience and flexibility, offering a full bath, an additional laundry area, ample storage, and direct access to the patio. A striking floating staircase with iron cable railings and LED-backlit treads provides architectural continuity throughout the home. Additional highlights include a two-car garage with EV outlet, a Generac generator, and an extraordinary rooftop terrace prepped with water and gas and featuring an integrated Weber gas grill. From this elevated outdoor retreat, enjoy breathtaking panoramic views of the city of Pittsburgh and the surrounding landscape, unforgettable sunsets, and front-row views of the city’s iconic firework displays. A rare opportunity to own a residence that seamlessly blends cutting-edge design, luxury finishes, smart technology, and exceptional indoor-outdoor living.

Property Information

Property Type

Residential

Sub-Type

Single Family Residence

Style

Contemporary, Three Story

Year Built

2020

Stories

3

Living Area

3,252 sq ft

Lot Size

0.10 acres

Lot Dimensions

0.104

Garage Spaces

2

Parking Spaces

2

MLS® Listing#

1748570

Property Features

Interior

Wet BarKitchen Island

Appliances

CooktopConvection OvenDryerDishwasherDisposalMicrowaveRefrigeratorWasher

Cooling

Central AirElectric

Heating

Natural GasForced Air

Flooring

HardwoodTile

Basement

Walk-Out Access

Pool

None

Parking

Garage Door Opener

Construction

Metal SidingConcrete

Roof

Other

Windows

Window CoveringsWindow Treatments

Security

Security System

Sewer

Public Sewer

Water Source

Public

Financial Details

Annual Taxes

$13,295

Assessed Value

$537,400

Affordability Calculator

$238,000

Estimated monthly payment

$6,334/mo

Principal $952,000 · Est. interest $1,328,125 over 30 yrs

Neighborhood Market Statistics

How this home compares to active listings in Mt Washington, PA

$296,154
Median Listing Price
54
Median Days on Market
1,727
Median Sq Ft
$198
Median Price / Sq Ft
298
Active Listings
  • This home’s price is 302% above the area median.
  • Its price per sq ft is 85% above the area median.

Market statistics compiled from active EXIT Realty® and MLS listings in Mt Washington, PA.

Location

Map showing the location of 646 Science Street, Mt Washington, PA 15210

Points of Interest in Mt Washington, PA

Showing the Mt Washington area map.

Nearby Schools

  • Pittsburgh Grandview K-5

    Elementary · 0.2 mi away

  • Knoxville Elementary School

    Elementary · 0.6 mi away

  • Pittsburgh Public Schools

    Secondary · 0.7 mi away

  • Head Start of Allegheny County-Allegheny Intermediate Unit

    School · 0.7 mi away

  • Prospect Elementary School

    Secondary · 0.7 mi away

  • Art Institute of Pittsburgh

    School · 0.8 mi away

  • Mt Washington Children's Center

    School · 0.8 mi away

  • Diocese of Pittsburgh

    School · 0.9 mi away

  • Pittsburgh Phillips K-5

    Elementary · 1.0 mi away

  • Boggs Avenue Elementary School

    Elementary · 1.0 mi away

  • Goddard School

    School · 1.1 mi away

  • City Charter High School

    Secondary · 1.1 mi away

  • Grandview Montessori

    Elementary · 1.2 mi away

  • South Hills Middle School

    Secondary · 1.2 mi away

  • Brashear High School

    Secondary · 1.2 mi away

  • Small World Early Learning & Development Center

    School · 1.3 mi away

  • Urban Pathways Charter School

    Secondary · 1.3 mi away

  • Pittsburgh C.A.P.A. 6-12

    School · 1.4 mi away

  • Pittsburgh Arlington School

    School · 1.4 mi away

  • Whittier Elementary School

    Elementary · 1.4 mi away

Commute Calculator

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Moving Cost Estimate

EXIT Agents in Mt Washington

Listing Courtesy: HOWARD HANNA REAL ESTATE SERVICES - 7249343400

West Penn MLS, Inc. All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Multiple Listing Service. Real estate listings held by brokerage firms other than {{BROKERAGE}} may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. Copyright ©2026 All rights reserved.

Last Updated: 2026-04-15

The data relating to real estate for sale on this web site comes in part from the Internet Data Exchange (IDX) program of one or more Multiple Listing Services (MLS). Listing information is deemed reliable but is not guaranteed accurate. Copyright © EXIT Realty® and respective MLS providers.

Data provided by West Penn Multi List. MLS® Listing#1748570. © 2026EXIT Realty®. All rights reserved.