Our room additions not only enhance your living space—but invigorate it. Whether you’re remodeling your home or want to increase your home’s value, a home addition is a cost-effective effective way to transform your home. We’ll take care of the whole process, from planning and permitting, to finishes and completion.

Reasons for a Room Addition

Room additions are a smart investment for many reasons— they increase your home’s value, add convenience and comfort to your family and guests, and provide a solution to the much-needed extra space your home needs.

Bedroom Additions Carlsbad CA

Add a Bedroom for Your Growing Family

If you have a growing family or a multi-generational household, an additional bedroom offers the convenience and comfort you need

Bathroom Additions Carlsbad CA

Create an Additional Bathroom

A bathroom addition adds convenience for your family and guests, and increases your home’s resale value.

Master Suite Additions Carlsbad CA

Build a Master Suite for Your Home

Increase your storage space with a walk-in closet, and add a private bathroom to transform your bedroom into a true master retreat.

Kitchen Additions Calsbad CA

Expand Your Kitchen

Expand your kitchen into a big, open space that’s perfect for multi-course meal prep, entertaining guests, and more.

Room Addition Gallery

On-Time Guarantee


Our commitment to you is to provide you with exceptional service and no surprises. We stand behind our job timeline (and will be fined if not). If we do not complete your project at the end of the agreed upon timeline, TNT Design and Build will take $250/day off the amount you owe until the job is done.


Number One in Customer Satisfaction

Our success is dependent on your complete satisfaction.

Let’s Build More Space for Your Home (800) 959-6558