The row house is one of the most efficient residential designs ever created, and it is experiencing a revival in cities where space is scarce and walkability matters. From the brownstones of Brooklyn to the painted ladies of San Francisco to the brick rows of Philadelphia and Baltimore, these attached homes define entire neighborhoods. If you own one or are eyeing a purchase, understanding their structure, strengths, and challenges helps you make smarter renovation decisions.
What Defines This Home Type
A row house is a single-family home that shares one or both side walls with adjacent houses, forming a continuous line along a street. Unlike townhouses, which may be staggered or detached in clusters, these homes share a uniform facade and roofline with their neighbors. Most are 12 to 20 feet wide and 40 to 60 feet deep, creating a long, narrow footprint of 1,200 to 2,400 square feet across two or three stories.
Key identifying features include a flat or shallow-pitched roof, a front stoop or steps, a shared party wall built of brick or stone, and a small rear yard or courtyard. The narrow width means rooms stack front-to-back rather than side-to-side, with windows only on the front and rear walls.
A Brief History
These attached homes originated in Europe, with some of the earliest examples appearing in 16th-century London and Paris. The design arrived in American cities during the colonial period. Philadelphia’s Elfreth’s Alley, built starting in 1702, contains some of the oldest continuously inhabited row houses in the country.
The row house reached peak construction between 1850 and 1920 when rapid industrialization packed workers into cities. Builders could construct a row of 10 to 20 homes simultaneously using standardized plans, shared walls, and repeating facades, keeping costs low while maximizing density. Baltimore alone has roughly 70,000 of these attached homes, more than any other American city.
Typical Floor Plans
Most of these homes follow a similar layout dictated by their narrow width. The ground floor contains a front parlor and a rear kitchen, sometimes connected by a narrow hallway. The second floor holds two to three bedrooms and a bathroom. Three-story versions add a third bedroom level or a finished attic.
The railroad-style layout — rooms connected in sequence without a central hallway — is common in older models. Walking from the front to the back requires passing through each room. This layout maximizes usable space but sacrifices privacy, which is why many renovations add hallways or reconfigure the floor plan entirely.
Renovation Considerations
These renovations operate under unique constraints. Shared party walls cannot be modified without your neighbor’s consent and structural engineering review. All plumbing, electrical, and HVAC systems must run front-to-back or floor-to-floor since side walls are shared. Natural light is limited to the front and rear facades, making light wells, skylights, and open floor plans especially valuable.
Rear extensions are the most common way to add space. Extending the ground floor kitchen by 10 to 15 feet into the backyard creates room for a modern open-concept living and cooking area. Costs range from $40,000 to $100,000 depending on foundation work, roofing, and finishes.
Bringing Light Into Narrow Spaces
Limited window walls are the biggest design challenge in this home type. Skylights and solar tubes punched through the roof deliver natural light to interior rooms that would otherwise rely entirely on artificial lighting. A single 2-by-4-foot skylight costs $1,500 to $3,500 installed and transforms a dark hallway or bathroom.
Removing interior walls between the front and rear rooms on the ground floor allows light to travel the full depth of the house. Transom windows above interior doors are a historically appropriate way to share light between rooms while maintaining acoustic separation. Glass pocket doors achieve the same effect with a modern aesthetic.
Common Structural Issues
Age brings predictable problems to these attached homes. The most common structural issue is settling — foundations shift unevenly over decades, causing cracked plaster, sticky doors, and sloping floors. Foundation underpinning costs $5,000 to $15,000 per section but prevents progressive damage.
- Rising damp — moisture wicking up through masonry foundations; solved with damp-proof courses or interior drainage systems
- Roof leaks — flat and low-slope roofs require replacement every 15 to 25 years; membrane roofing (TPO or EPDM) costs $5 to $10 per square foot
- Outdated electrical — knob-and-tube or 60-amp panels need upgrading; a full rewire runs $8,000 to $15,000
- Party wall disputes — damage to the shared wall during renovation can create legal liability; always document existing conditions with photos before work begins
Row House vs. Townhouse: The Difference
People often use these terms interchangeably, but they describe different things. A row house is part of a continuous, uniform line of attached homes sharing identical (or nearly identical) facades. A townhouse is any multi-story attached home, including those in planned developments with varied setbacks, attached garages, and different exterior finishes. All row houses are townhouses, but not all townhouses qualify as part of a true row.
Why This Style Is Making a Comeback
Developers and urban planners are rediscovering the row house as an answer to the housing density problem. New-construction row houses in cities like Washington, D.C., Richmond, and Denver offer 1,400 to 2,200 square feet at price points 20% to 40% below detached homes in the same neighborhoods. The shared-wall design reduces heating and cooling costs by 15% to 25% compared to freestanding homes of similar size, and the compact footprint supports walkable, transit-oriented neighborhoods that younger buyers increasingly demand.
