Introduction

Connecticut is known for its historic homes, charming New England architecture, and neighborhoods filled with houses built decades — or even centuries — ago. While these homes offer timeless beauty and character, renovating them often involves unique challenges that modern homes simply don’t present.

If you’re preparing to update an older Connecticut home, here’s what you need to know before you get started — including common issues, realistic costs, and how to avoid the surprises that can quickly derail a project.

Common Issues Found in Older CT Homes

1. Outdated Electrical Systems

Many Connecticut homes built before the 1970s still contain:

• Knob-and-tube wiring

• 60–100 amp service

• Ungrounded outlets

• Aluminum wiring

Bringing an older electrical system up to code is often essential for safety and insurance compliance.

What to expect:
Electrical upgrades can range from $3,000–$20,000+, depending on the age and size of the home.

2. Plumbing Problems

Older homes often include:

• Galvanized steel pipes (prone to rust/clogs)

• Old cast iron stacks

• Limited water pressure

• Undersized supply lines

Full or partial repiping may be required.

Typical cost:
$2,000–$15,000, depending on accessibility and scope.

3. Structural Surprises

Time, weather, and outdated framing practices can lead to hidden structural issues. Common problems include:

• Sagging floors

• Settling foundations

• Undersized floor joists

• Termite damage

• Rotted sill plates

• Out-of-level framing

Important: Any structural modification requires proper engineering in Connecticut.

Expect costs:
Anywhere from $5,000–$50,000+, depending on severity.

4. Asbestos & Lead Paint

Homes built before:

• 1978 → likely contain lead paint

• 1980 → may contain asbestos (floor tiles, insulation, siding, mastic, ducts, etc.)

Both require proper testing and licensed remediation if disturbed.

Cost ranges:

• Lead remediation: $1,000–$15,000+

• Asbestos removal: $1,500–$20,000+

5. Old Windows & Insulation

Classic wood windows and minimal insulation are common in older CT homes. While beautiful, they often result in:

• Drafts

• High heating bills

• Poor energy efficiency

Upgrades (without hurting historical charm) are often worth the investment.

6. Inefficient Layouts

Many older homes have:

• Small kitchens

• Confined rooms

• Closed-off hallways

• No open floor plans

Renovations often include structural reconfiguration to create modern flow — which typically means removing load-bearing walls.

Realistic Costs to Renovate an Older Connecticut Home (2025)

Older homes cost more to renovate because they require:

• Uncovering hidden issues

• Custom framing

• Structural engineering

• Modernizing old systems

• Higher labor skill for restoration work

Permits & Code Requirements in Connecticut

When renovating an older home, expect to need permits for:

• Electrical upgrades

• Plumbing changes

• Structural modifications

• Window/door size changes

• Layout reconfigurations

• Additions

• Roofing structure changes

• Insulation updates

Most CT towns enforce strict compliance with 2021/2022 building codes, even on older structures, meaning your renovation has to meet current standards.

How to Avoid Surprises During Renovation

1. Start with a thorough inspection

The earlier you identify structural or mechanical issues, the fewer unwanted surprises during construction.

2. Budget a 10–20% contingency

Older homes always uncover something unexpected — rot, wiring, framing issues, etc.

3. Hire a builder experienced with older CT homes

Many modern builders struggle with older houses. The right team makes all the difference.

4. Get architectural & structural plans

Especially for layout changes or additions, older homes require more planning.

5. Consider prioritizing energy efficiency

Air sealing, insulation, and window upgrades can dramatically improve comfort and reduce costs.

Benefits of Renovating an Older Connecticut Home

Despite the extra work, older CT homes come with major advantages:

• Beautiful craftsmanship and character

• Stronger framing & materials (often real lumber)

• Timeless architecture

• Large yards & mature neighborhoods

• High resale demand

A well-done renovation can combine historic charm with modern comfort — increasing both enjoyment and long-term value.

Conclusion

Renovating an older Connecticut home isn’t always simple, but with the right planning and team, it can be one of the most rewarding projects you’ll undertake. From hidden structural surprises to code upgrades and layout improvements, understanding what to expect helps you budget wisely and avoid stress.

Whether you're restoring a 1920s colonial, transforming a mid-century home, or modernizing a 1970s raised ranch, Casali Companies is here to guide you through every step with clarity, craftsmanship, and experience.