The Hidden Costs of Renovating a Historic Home

Renovating a historic home is a rewarding endeavor—but it can also be more complex and expensive than homeowners initially expect. In a city like Philadelphia, where historic properties line the streets of neighborhoods like Society Hill, Chestnut Hill, and Germantown, these surprises are common.

At Lapstone, we’ve helped homeowners modernize and preserve historic residences without compromising their architectural integrity. Here’s what you need to know about the hidden costs that can affect your timeline, budget, and plans—and how to prepare for them.

1. Permitting & Historical Approvals

Many historic homes in Philadelphia fall under the oversight of the Philadelphia Historical Commission. This means:

• Renovations may require special permits

• Exterior changes often need pre-approval

• Material use may be restricted (e.g., no vinyl windows)

These requirements add time and money to the process. Expect application fees, potential architectural review costs, and longer permit timelines—especially if your home is on the Philadelphia Register of Historic Places.

2. Specialized Labor and Materials

Historic homes require tradespeople who understand traditional construction methods. For example:

• Plaster repair (instead of drywall)

• Slate roofing repairs

• Custom millwork or matching moldings

These skills come at a premium, as does sourcing period-appropriate materials. Custom-built windows, wood siding, or reclaimed materials can quickly drive up your budget compared to standard renovation projects.

3. Uncovering the Unexpected

Once demolition begins, historic homes tend to reveal surprises. Common hidden issues include:

• Old knob-and-tube wiring

• Galvanized plumbing

• Structural damage hidden behind walls

• Lead paint or asbestos remediation

These issues often aren't visible during initial inspections and must be addressed to bring the home up to modern safety standards.

4. Updating to Code

Older homes rarely meet current building codes. You may need to:

• Upgrade electrical panels and circuits

• Add insulation and fireproofing

• Reinforce aging framing or floor systems

These updates are essential for safety and resale value, but they add layers of complexity to your renovation plans.

5. Insurance & Financing

Insuring or financing renovations on a historic home can require additional documentation. Lenders and insurers often want:

• Detailed renovation plans

• Documentation of contractor licensing

• Proof of compliance with local ordinances

You may need specialized homeowner’s insurance policies, especially during active construction periods.

6. Timeline Extensions

Due to permitting delays, custom material orders, and unforeseen issues, renovations in historic homes often take longer than modern remodels. Build extra time into your plan—and communicate closely with your contractor to avoid bottlenecks.

How Lapstone Helps Navigate These Costs

At Lapstone, we start every historic renovation project with a thorough inspection and clear, itemized proposal. We work with local architects and historic preservation experts to ensure compliance—and we factor hidden costs into your budget so you're not caught off guard mid-project.

We’ve successfully completed historic renovations in neighborhoods across Philadelphia County, and we understand the importance of preserving the character of your home while making it safe, functional, and beautiful.

Considering renovating a historic home in Philadelphia? Let’s make sure you’re prepared every step of the way. Schedule your consultation today at LapstoneLLC.com.