Home Additions: Costs, Timeline, and What to Expect Before You Build
Running out of space at home? Maybe your family is growing, you need a home office, or you’re dreaming of a bigger kitchen. If you’ve been searching for “home addition cost”, “home addition contractors near me”, or “how long does a home addition take”, you’re in the right place.
A home addition (also called a home extension) can give you the extra square footage you need without the stress of moving. Better yet, it can boost your property value while making your home fit your lifestyle. In this guide, we’ll cover the most common questions homeowners ask before starting a home addition project.

Why Choose a Home Addition Instead of Moving?
Moving may sound easy, but it comes with real estate fees, packing, and leaving behind the neighborhood you love. A home addition allows you to:
- Stay in your current neighborhood
- Customize your home for your lifestyle
- Increase resale value
Benefits of Building Over Buying a New Home
- Lower overall costs than buying a larger home
- Less disruption to your daily life
- Full control over design, layout, and materials
Popular Types of Home Additions
When planning an addition, think about how you’ll use the new space. Common home addition ideas include:
Bedroom and Bathroom Additions
Adding a bedroom or bathroom increases both comfort and home value. Master suite expansions are particularly valuable for resale.
Second-Story Home Additions
A second-story addition is ideal for families needing multiple bedrooms, offices, or extra living space.
Kitchen Bump-Outs and Extensions
Extend your kitchen or dining room to create an open, airy feel. Bump-outs are smaller additions that add functional square footage without major construction.
Garage and Basement Conversions
Turn your garage or basement into a functional living space—perfect for guest rooms, offices, or recreational areas.
Sunrooms and Enclosed Porches
A bright sunroom or enclosed porch provides extra living space and can make your home feel larger without major structural changes.

How Long Does a Home Addition Take?
Small vs Large Addition Timelines
- Small room additions: 8–12 weeks
- Medium projects (sunrooms, bump-outs): 3–4 months
- Large projects (second story, multiple rooms): 4–6+ months
Can I Stay in My Home During Construction?
In most cases, yes. Expect some dust and noise, but a good contractor will minimize disruption. Permits and inspections are part of the process and essential for safety and compliance.

How Much Does a Home Addition Cost in 2025?
Costs vary depending on size, materials, and complexity.
Factors That Affect Home Addition Cost
- Size of the addition
- Choice of materials and finishes
- Labor and design fees
- Structural or utility upgrades
Budgeting Tips for Homeowners
Consider long-term ROI when choosing finishes
Request a detailed estimate from your contractor
Set aside 10–15% for unexpected expenses
Permits and Regulations for Home Additions
Do I Need Permits for a Home Addition?
Yes. Most home additions require permits to meet local building codes. B&P Contracting handles the permitting process for you, so you can focus on enjoying your new space instead of paperwork.
Do I Need a Designer or Architect?
For most additions, yes. B&P Contracting partners with designers to ensure your new space fits your home perfectly and looks amazing. From concept to completion, we handle every step of the design and construction process.
How Do I Start a Home Addition Project with B&P Contracting?
- Schedule a consultation to discuss your goals, budget, and timeline.
- Review a detailed proposal including design, materials, and costs.
- Approve permits and construction schedule.
- Watch your dream space come to life with expert construction and attention to detail.
Final Thoughts
A home addition is more than extra square footage—it’s about creating a home that works for your life. Whether you need another bedroom, a larger kitchen, or a sunroom to enjoy year-round, B&P Contracting’s home addition services can help make it happen.
If you’re searching for “home addition contractors near me” or wondering about home extension costs in Durham Region, scheduling a consultation with B&P Contracting is the best first step. Every home is unique, and we provide custom solutions that fit your needs, budget, and style.