What is a Dwelling Unit? Different Types of Dwelling Units

When planning a home construction or renovation project, understanding the different types of dwelling units is essential. Whether you're considering building an Accessory Dwelling Unit (ADU) or expanding your property, knowing the differences between single dwelling units, multi dwelling units, detached dwellings, and ADUs can help you make informed decisions.

At Hernandez Family Construction, a top ADU construction service in California, we specialize in building high-quality detached ADUs, granny flats, and additional dwelling units that enhance property value and functionality. In this guide, we’ll explore the different types of dwelling units, their benefits, and how they can add value to your home.

What is a Dwelling Unit?

A dwelling unit is a self-contained living space designed for occupancy by one or more people. It typically includes:

• A kitchen or cooking facility
• A bathroom
• A sleeping area

Dwelling units can be standalone structures (detached) or part of a larger building (attached). They can range from a single family dwelling unit to multi-unit complexes, depending on zoning laws and property design.

Types of Dwelling Units

Single Dwelling Unit (SDU)

A single dwelling unit (SDU) refers to a residential structure designed for one household. This includes:

• Single-family homes
• One family dwelling (standalone houses)
• Detached dwellings (separate from other structures)

These units are ideal for homeowners who prefer privacy and independent living spaces.

Multi-Dwelling Unit (MDU)

A multi dwelling unit (MDU) consists of multiple separate living spaces within one building or complex. Examples include:

• Apartment buildings
• Duplexes and triplexes
• Townhouses

MDUs are common in urban areas where space is limited, allowing multiple families to reside in one structure.

Accessory Dwelling Unit (ADU) | Granny Flat

An ADU (Accessory Dwelling Unit), also known as a granny flat, is a secondary housing unit on a single-family property. ADUs can be:

• Attached ADUs (connected to the main house)
• Detached ADUs (standalone structures)
• Converted spaces (garage or basement ADUs)

At Hernandez Family Construction, we specialize in detached ADU construction in Santa Clara, California, helping homeowners maximize their property’s potential.

Detached Dwelling

A detached dwelling is a standalone residential structure not connected to any other building. Benefits include:

• More privacy
• Flexibility in design
• Potential for rental income

A detached ADU is a popular choice for homeowners looking to add extra living space without altering their main house.

ADU vs. Home Addition: Which is Better?

When expanding your living space, you may consider either an ADU or a home addition. Here’s how adu vs addition compare:

An ADU is ideal if you want a separate living space for guests, rental income, or family members. A home addition is better if you need more space within your existing home.

How Much Value Does an ADU Add?

Adding an ADU can significantly increase your property’s value. Studies show that:

• ADUs can boost home value by 20-30%
• Rental income from an ADU can generate $1,500-$3,000/month in California
• They improve resale potential by offering flexible living arrangements

For expert ADU construction in Santa Clara, CA, Hernandez Family Construction provides customized additional dwelling unit plans to maximize ROI.

FAQs About Dwelling Units

What is the difference between a single dwelling unit and a multi dwelling unit?

A single dwelling unit (SDU) houses one family, while a multi dwelling unit (MDU) contains multiple separate living spaces (apartments).

Can I build a detached ADU in Sunnyvale and Santa Clara, California?

Yes! Hernandez Family Construction specializes as detached ADU builders in Sunnyvale, and Santa Clara, California, complying with local zoning laws.

How long does it take to build an ADU?

The timeline varies, but most detached ADUs take 6-12 months, including permits and construction.

Do I need a permit for an ADU?

Yes, ADUs require permits. Our team at Hernandez Family Construction handles all permitting processes for a hassle-free experience.

What is the benefit of a detached dwelling over an attached one?

• More privacy
• Less disruption to the main house
• Higher rental appeal

Why Choose Hernandez Family Construction for Your ADU Project?

As a leading ADU builder in Santa Clara, California, we offer:

• Custom additional dwelling unit plans
• High-quality detached ADU construction
• Full-service permitting and design
• Transparent pricing and timelines

Whether you need a granny flat, rental unit, or multi-dwelling expansion, our team ensures a seamless construction process.

Final Thoughts

Understanding the different types of dwelling units, from single family homes to multi dwelling complexes and ADUs, helps you make the best choice for your property. If you’re considering a detached ADU in Santa Clara, CA, Hernandez Family Construction provides expert design and construction services to enhance your home’s value and functionality.

Contact us today to discuss your ADU design or dwelling unit project!