Renovating a Row House in Delaware: What Homeowners Should Know

Delaware’s historic neighborhoods are filled with architectural character, and few housing styles capture that charm quite like the traditional row house. From the brick-lined streets of Wilmington to older residential areas throughout New Castle County, these narrow, attached homes represent an important part of the state’s architectural heritage.

Row houses offer something increasingly difficult to find in modern construction: distinctive craftsmanship, historic details, efficient use of urban space, and a strong connection to the surrounding neighborhood.

But renovating a row house presents challenges that homeowners may not encounter in detached properties.

Shared walls, aging brickwork, limited natural light, narrow staircases, and complicated structural systems all require careful consideration. Even a relatively simple remodeling project can become more involved when neighboring properties share structural components.

Whether you’re updating a kitchen, remodeling a bathroom, restoring original brickwork, or planning a complete interior renovation, understanding how Delaware row houses were constructed is essential.

Here’s what homeowners should know before beginning a row house renovation in Delaware.

This article provides general information for homeowners. Structural modifications, masonry repairs, and other specialized construction work should always be evaluated by qualified professionals familiar with local building requirements.

1. Understanding Shared Walls in Delaware Row Houses

One of the defining characteristics of a row house is its connection to neighboring properties.

Unlike detached homes, row houses typically share one or two walls with adjacent buildings. These walls, often called party walls, may provide structural support, fire separation, and sound insulation between properties.

In older Wilmington row houses, shared walls are frequently constructed from brick or other masonry materials. Depending on the building’s age and construction method, floor joists and roof framing may also connect to these walls.

This creates an important consideration during renovation: changes to a shared wall can potentially affect neighboring structures.

Before cutting into masonry, installing large openings, or making structural alterations, consult a qualified structural engineer.

An engineer can determine whether the proposed work affects the building’s stability and recommend appropriate reinforcement when necessary.

Homeowners should also understand that shared-wall responsibilities may depend on property boundaries, recorded agreements, and applicable local requirements.

Discussing major renovation plans with neighboring property owners before construction begins can help prevent misunderstandings and unnecessary disputes.

2. Removing Interior Walls Requires Careful Planning

Open-concept living spaces are popular in modern home remodeling, but creating them inside an older Delaware row house can be complicated.

Traditional row houses were often designed with relatively narrow rooms arranged from front to back. Interior walls sometimes help support floor joists, upper stories, or roof structures.

Removing one of these walls without understanding its function can compromise the building’s structural integrity.

For homeowners hoping to create a larger kitchen, connect a dining room to a living area, or improve circulation between rooms, professional structural evaluation should be an early step.

Depending on the existing construction, an engineer may recommend a properly designed beam, columns, or other reinforcement.

These modifications can also affect electrical wiring, plumbing, HVAC systems, and finished surfaces.

Before finalizing your remodeling budget, determine which walls can be safely removed and what additional construction work will be required.

3. Preserving Historic Brickwork and Mortar

Brick is one of the most recognizable features of historic row houses in Wilmington and other older Delaware communities.

Many traditional masonry buildings were constructed using materials and methods that differ significantly from modern brick construction.

Older bricks may be softer and more porous, while historic lime-based mortars were designed to accommodate movement and allow moisture to pass through the wall.

Using an incompatible modern mortar during repairs can sometimes damage the surrounding brick.

For example, a mortar that is excessively hard or impermeable may contribute to deterioration when moisture becomes trapped or when the wall experiences seasonal movement.

This is why repointing—the process of removing deteriorated mortar and replacing it—requires careful material selection.

A masonry contractor experienced with historic buildings can evaluate the condition of the brick and recommend a compatible repair method.

Signs Your Brickwork May Need Attention

Common warning signs include:

• Crumbling or missing mortar joints.

• Flaking, cracking, or deteriorating brick surfaces.

• White mineral deposits known as efflorescence.

• Damp patches on interior masonry walls.

• Visible cracks that appear to be growing.

• Water penetration around windows, doors, or roof connections.

Not every crack indicates a serious structural problem, but significant movement or recurring moisture deserves professional attention.

For historic Delaware row houses, preserving original brickwork whenever practical can help maintain architectural character and avoid unnecessary replacement costs.

4. Moisture Problems in Older Delaware Masonry Homes

Moisture is one of the most important issues to investigate before renovating an older brick row house.

Delaware experiences humid summers, seasonal temperature changes, and periods of heavy rainfall. These conditions can contribute to moisture-related problems when roofing, drainage, or masonry systems are deteriorating.

In attached homes, water can sometimes travel through concealed spaces or enter near shared roof connections.

Common sources of moisture include damaged flashing, deteriorated mortar joints, leaking gutters, roof defects, and poorly directed drainage.

Before installing new drywall, insulation, flooring, or interior finishes, identify and correct the source of any water intrusion.

Why Old Brick Walls Need Special Attention

Historic masonry often manages moisture differently from modern wall assemblies.

Applying waterproof coatings, impermeable sealers, or inappropriate insulation directly to old brick can interfere with the wall’s ability to dry.

In some situations, trapped moisture may contribute to brick deterioration, interior dampness, or damage during freezing conditions.

The correct approach depends on the masonry materials, existing wall construction, exposure to weather, and planned renovation.

Consult a professional familiar with historic masonry before sealing, insulating, or covering older brick walls.

5. Making Narrow Row Houses Feel Larger

Space is one of the biggest design challenges in a traditional row house.

Many Delaware row houses have relatively narrow floor plans, with windows primarily located at the front and rear of the building.

Because neighboring homes occupy both sides, the middle rooms may receive limited natural light.

Fortunately, thoughtful design can make a narrow interior feel significantly more spacious without sacrificing the home’s historic character.

Improve Natural Light

Consider using lighter interior finishes, carefully positioned mirrors, and glass-paneled doors to help distribute available daylight.

Where structurally appropriate and permitted, skylights or roof windows may introduce additional light into upper floors.

Opening sightlines between rooms can also make interior spaces feel less confined.

Choose Space-Efficient Storage

Built-in shelving, under-stair storage, and appropriately sized cabinets can make better use of limited floor space.

In kitchens, vertical cabinetry and compact layouts often provide more practical storage than oversized islands.

Maintain Visual Continuity

Consistent flooring, coordinated finishes, and a restrained color palette can help connect rooms visually.

Rather than attempting to make every room look larger through major demolition, focus on improving circulation, lighting, and functionality.

A well-designed row house does not need an entirely open floor plan to feel comfortable and modern.

6. Soundproofing Shared Walls

Living close to neighbors is part of the row house experience, but sound transmission can become a concern during renovations.

Older party walls may provide substantial mass, yet sound can still travel through structural connections, gaps, floors, ceilings, and penetrations around utilities.

If you are remodeling a bedroom, home office, or living room, consider whether additional sound-control measures would improve everyday comfort.

Possible improvements include acoustic insulation within an appropriately designed wall assembly, sound-rated drywall systems, resilient construction details, and careful sealing of gaps.

However, any modification to a shared wall must preserve required fire separation and should not interfere with structural performance or moisture management.

A qualified contractor can help determine which soundproofing solutions are appropriate for the existing building.

7. Planning Construction Access in Wilmington Neighborhoods

Renovating a narrow urban home requires more logistical planning than many homeowners expect.

In established Wilmington neighborhoods, row houses may have limited street frontage, narrow entrances, compact staircases, and little space for construction materials.

Some properties also lack convenient rear access.

These conditions can affect nearly every stage of a remodeling project.

Large appliances, cabinets, countertops, drywall panels, and other materials must be measured carefully to ensure they can pass through doors, hallways, and staircases.

Contractors may also need to coordinate deliveries, temporary parking, debris removal, and equipment access.

Before ordering large materials, verify the available access dimensions.

If construction activities require the use of public sidewalks, streets, or temporary containers, check whether local permits or approvals are necessary.

Planning these details early can reduce delays and help keep the surrounding neighborhood accessible.

8. Roofs, Gutters, and Shared Drainage Systems

Roof maintenance deserves particular attention in attached homes.

Traditional row houses may feature flat or low-slope roofs, parapet walls, shared drainage arrangements, or roof connections that are difficult to inspect from the ground.

Water entering through one part of a roof can sometimes appear inside a different section of the building.

Before undertaking a major interior renovation, inspect the roof and its drainage components.

Pay attention to flashing, parapet walls, gutters, downspouts, roof penetrations, and connections to neighboring structures.

Where drainage components or roof elements are shared, determine the relevant maintenance responsibilities before making changes.

A roofing professional experienced with older attached buildings can help identify problems that might otherwise remain hidden until new interior finishes are damaged.

9. Historic Preservation and Renovation Permits in Delaware

Some of Delaware’s older row houses are located in historic districts or areas with architectural preservation requirements.

In Wilmington, certain historic properties and designated districts may be subject to additional review for exterior alterations.

Projects involving windows, doors, facades, rooflines, or other visible architectural elements may require approval beyond ordinary construction permits.

The applicable requirements depend on the property’s location and designation.

Before changing historic exterior features, contact the appropriate municipal or county authority to determine whether design review or other approvals are required.

Homeowners should also verify building permits for structural modifications, electrical upgrades, plumbing work, and major remodeling projects.

A property’s historic appearance does not automatically mean it is legally protected, and not every renovation requires historic-preservation approval.

Checking the rules before construction begins is the best way to avoid costly corrections or delays.

10. Working With Neighbors During a Row House Renovation

A successful row house renovation involves more than managing contractors and materials.

Because homes are physically connected, construction activity can affect nearby residents through noise, vibration, dust, parking restrictions, and temporary access issues.

Good communication can make the process considerably easier.

Before major demolition or structural work begins, inform adjacent homeowners about the general schedule and any activities that may affect them.

Discuss access needs in advance, especially if contractors require temporary entry to neighboring property.

Keep shared walkways and public sidewalks clear, arrange responsible debris removal, and address concerns promptly.

Professional contractors should also take appropriate precautions to protect neighboring structures from construction-related damage.

Maintaining positive relationships with neighbors is particularly valuable in established communities where residents live close together.

11. Budgeting for Unexpected Row House Renovation Costs

Older row houses can contain hidden conditions that are difficult to identify before demolition.

Behind finished walls, contractors may discover outdated wiring, deteriorated plumbing, previous structural modifications, damaged masonry, or concealed moisture.

These discoveries can increase renovation costs and extend the construction schedule.

To manage uncertainty, establish a contingency budget before work begins.

The appropriate amount depends on the building’s condition, the project’s complexity, and how much of the existing structure will be opened.

A renovation involving extensive demolition or major structural modifications generally carries more uncertainty than a straightforward cosmetic update.

Request detailed written estimates and clarify how unexpected work will be documented, approved, and priced.

Whenever possible, complete necessary inspections and investigative work before ordering custom cabinets, flooring, doors, or other expensive finishes.

This approach helps protect your budget while allowing the project to adapt to conditions discovered during construction.

12. Questions to Ask Before Renovating a Delaware Row House

Before beginning construction, discuss the following questions with your contractor or design professional:

1. Which interior and shared walls are load-bearing?

2. Has a qualified professional evaluated the building’s structural condition?

3. Does the existing brickwork require repointing or other repairs?

4. Are there signs of water intrusion or hidden moisture?

5. Will the renovation affect required fire separation between neighboring homes?

6. Are the electrical, plumbing, and heating systems adequate for the proposed changes?

7. How will construction materials and debris move through the property?

8. Does the project require building permits or historic-district approval?

9. Could any work affect neighboring properties?

10. What contingency has been included for unexpected conditions?

Clear answers to these questions can help homeowners make more informed decisions before committing to major renovation expenses.

Preserving the Character of Delaware’s Historic Row Houses

Renovating a row house is an opportunity to combine the best qualities of historic architecture with the comfort and functionality of modern living.

Original brickwork, traditional staircases, decorative trim, and distinctive room proportions contribute to the character of Delaware’s older urban neighborhoods.

Preserving these elements does not mean sacrificing modern conveniences.

With thoughtful planning, homeowners can improve lighting, update essential systems, create more functional kitchens and bathrooms, and address structural or moisture concerns while respecting the building’s original design.

The most successful projects begin with an understanding of how the house was built and how its components interact with neighboring structures.

Whether you own a historic brick row house in Wilmington or an attached home in another established Delaware community, working with experienced local professionals can help protect your investment and preserve the architectural qualities that make these properties special.

A carefully renovated Delaware row house offers more than an updated living space. It preserves a piece of local history while creating a home designed for the future.