Kansas City's Premier Room Addition Experts














Kansas City's Premier Room Addition Experts
Expand your living space with professionally designed and built room additions. From sunrooms to second stories, we create seamless home expansions that enhance your lifestyle and property value with 15+ years of Kansas City expertise.














Trusted & Certified
Licensed, insured, and backed by industry-leading certifications


















Complete Room Addition Services in Kansas City
From sunrooms to second stories, our expert team designs and builds room additions that seamlessly blend with your existing home. Each project is customized to your needs, budget, and architectural style.
Sunroom Installation
Create a bright, comfortable space that bridges indoor and outdoor living. Perfect for Kansas City's four seasons with energy-efficient glass and climate control.
- Three & Four Season Options
- Energy-Efficient Windows
- Climate Control
- Custom Flooring
Second Story Addition
Maximize your property's footprint by building up. Add bedrooms, bathrooms, or a complete master suite above your existing home.
- Master Suite Additions
- Multiple Bedrooms
- Structural Engineering
- Staircase Design
Attic Conversion
Transform unused attic space into valuable living areas. Bedrooms, offices, storage rooms with proper insulation and ventilation.
- Bedroom Conversions
- Home Office Space
- Storage Solutions
- Dormer Windows
In-Law Suite Addition
Create independent living space for family members with a complete suite including bedroom, bathroom, and kitchenette.
- Private Entrance
- Full Bathroom
- Kitchenette Options
- Accessibility Features
Family Room Addition
Expand your living space with a custom family room designed for relaxation and entertainment. Coming soon!
- Open Floor Plans
- Vaulted Ceilings
- Built-In Storage
- Fireplace Integration
Home Office Addition
Create a dedicated workspace separate from your main living areas. Perfect for remote work with custom built-ins and technology integration.
- Built-In Desks
- Storage Solutions
- Soundproofing
- Separate Entrance Options
Master Suite Addition
Design your dream master bedroom with walk-in closets, luxury bathroom, and sitting area for the ultimate private retreat. Coming soon!
- Luxury Bathrooms
- Walk-In Closets
- Sitting Areas
- Private Deck Access
Sunroom Installation
Create a bright, comfortable space that bridges indoor and outdoor living. Perfect for Kansas City's four seasons with energy-efficient glass and climate control.
- Three & Four Season Options
- Energy-Efficient Windows
- Climate Control
- Custom Flooring
Second Story Addition
Maximize your property's footprint by building up. Add bedrooms, bathrooms, or a complete master suite above your existing home.
- Master Suite Additions
- Multiple Bedrooms
- Structural Engineering
- Staircase Design
Attic Conversion
Transform unused attic space into valuable living areas. Bedrooms, offices, storage rooms with proper insulation and ventilation.
- Bedroom Conversions
- Home Office Space
- Storage Solutions
- Dormer Windows
In-Law Suite Addition
Create independent living space for family members with a complete suite including bedroom, bathroom, and kitchenette.
- Private Entrance
- Full Bathroom
- Kitchenette Options
- Accessibility Features
Family Room Addition
Expand your living space with a custom family room designed for relaxation and entertainment. Coming soon!
- Open Floor Plans
- Vaulted Ceilings
- Built-In Storage
- Fireplace Integration
Home Office Addition
Create a dedicated workspace separate from your main living areas. Perfect for remote work with custom built-ins and technology integration.
- Built-In Desks
- Storage Solutions
- Soundproofing
- Separate Entrance Options
Master Suite Addition
Design your dream master bedroom with walk-in closets, luxury bathroom, and sitting area for the ultimate private retreat. Coming soon!
- Luxury Bathrooms
- Walk-In Closets
- Sitting Areas
- Private Deck Access
Planning Your Room Addition in Kansas City
Room additions provide the perfect solution for Kansas City families who need more space but love their neighborhood and home. Whether you need room for a growing family, want to accommodate aging parents, or simply desire additional living area, professional room additions can transform your lifestyle while significantly increasing your property value.
"Room additions are about giving families the space they need to grow and thrive without leaving the neighborhood they love. When we add space to Kansas City homes, we're not just building rooms - we're creating possibilities for families to stay together, work from home, or simply have the space they've always dreamed of."
As the best room addition contractor in Kansas City with hundreds of 5-star reviews, our 4th generation family business with over 30 employees has been expanding Kansas City homes for decades. We specialize in seamless additions that look like they were always part of your home, ensuring every project enhances both functionality and property value.
A well-planned room addition can transform your home and lifestyle. Proper planning is essential for success, considering how the new space will be used, who will use it, and how it should connect to your existing home.
Start by defining your needs and goals. Consider how the new space will be used, who will use it, and how it should connect to your existing home. Think about natural light, traffic flow, and how the addition will look from both inside and outside your home.
Kansas City's climate requires careful consideration of insulation, heating, and cooling. We'll help you design an energy-efficient addition that's comfortable year-round while keeping utility costs manageable.
Design & Architectural Considerations
Your room addition should complement your home's existing architecture. We carefully match rooflines, siding materials, window styles, and architectural details to create a seamless integration that looks like it was always part of your home.
Foundation requirements vary by addition type. Sunrooms may use a simple slab foundation, while second story additions require structural evaluation and potential reinforcement of existing foundations. Our engineers ensure your home can safely support any addition.
Interior design is equally important. We'll help you choose flooring, lighting, and finishes that flow naturally with your existing spaces while meeting the specific needs of your new room.

Professional room addition showcasing seamless integration with existing home
Budget Planning & Return on Investment
Room additions are significant investments that can substantially increase your home's value. In Kansas City, well-executed additions typically recoup 50-80% of their cost in increased home value, with some additions like sunrooms and master suites performing even better.
Costs vary widely based on size, complexity, and finishes. A basic sunroom might start around $15,000, while a second story addition could range from $50,000 to $150,000 or more. We provide detailed estimates breaking down all costs so you can make informed decisions.
Consider long-term savings too. Energy-efficient windows, proper insulation, and smart HVAC design can significantly reduce utility costs. Quality construction also means lower maintenance costs over time.
Frequently Asked Questions
Ready to Expand Your Living Space?
Let's discuss your room addition project and create a plan that fits your needs and budget.
Why Kansas City Homeowners Trust Coulston Construction
Local Expertise
15+ years building room additions in Kansas City with deep knowledge of local codes and styles
Timely Completion
Detailed project scheduling ensures your addition is completed on time and within budget
Quality Construction
Premium materials and expert craftsmanship ensure your addition lasts for decades
Transparent Pricing
Detailed estimates with no hidden costs help you plan your investment wisely
What Kansas City Homeowners Say About Our Room Additions
Read real reviews from satisfied customers who expanded their homes with Coulston Construction. Every addition is designed and built to exceed expectations.
Amanda Alcantar
Kansas City Area
"Full remodel plus an addition, Mr. Coulston is on time and on budget. Kept us informed with any changes along the way."
2400baynard
Overland Park, KS
"My dream of creating a 'Golden Girls' house in my retirement was made real once I met Bob Coulston and his team. He was on time, on budget and the work was delivered with unbelievable creativity and care. We were truly sorry when the work was over after 6 months."
Michael Thompson
Liberty, MO
"Added a complete second floor with 3 bedrooms and 2 baths. The structural work was expertly done, and they matched our existing home perfectly. You can't tell it wasn't original to the house!"
Jennifer Roberts
Parkville, MO
"Our new sunroom is absolutely beautiful! It's become our favorite room in the house. Bob and his team handled everything from permits to the final details. The quality is outstanding."
Richard Chen
Lenexa, KS
"Built a complete in-law suite for my aging parents. The team was incredibly thoughtful about accessibility features and creating a space that feels both connected and private. Exceptional work!"
Sarah Mitchell
Prairie Village, KS
"Our new family room addition has transformed how we live. The vaulted ceilings and large windows make it feel so spacious. Coulston Construction delivered exactly what we envisioned."
Join Our Happy Room Addition Customers
We respond to estimate requests within 24 hours, you'll definitely get a call or email back by then... our estimate is also completely free!
Areas We Serve
Proudly serving the Kansas City metropolitan area with professional construction and remodeling services. No project too big or small!
Don't See Your City?
We serve the entire Kansas City metropolitan area and surrounding communities. If you don't see your city listed, give us a call - we likely serve your area!
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Ready to Transform Your Home?
We respond to estimate requests within 24 hours, and our estimates are also completely free!