ADU Construction in Goochland, VA

A dedicated ADU builder for Goochland, Powhatan, Hanover, Richmond and the surrounding counties, on your land.

More Living Space, Built on Your Land

An accessory dwelling unit gives your property a second, self-contained living space, its own kitchen, bathroom, and entrance, without buying more land. We build across Goochland, Powhatan, Hanover, Richmond, Chesterfield, and Charlottesville, start to finish.

Most of the ADU conversations we have start with family: a parent who wants to be close but independent, an adult child saving up before buying their own place, or visiting family who need more than a spare bedroom doing double duty. Some homeowners want a private home office or studio instead. Whatever the reason, an ADU adds real square footage that shows up in resale value, regardless of Goochland’s rental restrictions.

ADU Rules Are Different in Every County

Virginia doesn’t have one statewide ADU rulebook, each county writes its own. In Goochland, attached ADUs are permitted by right in several residential districts. Detached units require a Conditional Use Permit, and current rules limit occupancy to family members, with rental prohibited. Chesterfield and Hanover both require their own permit processes with a similar family-use focus. Powhatan has its own standards as well.

There’s a new state law that would loosen ADU rules statewide, but it doesn’t take effect until July 2027. Counties with an ADU ordinance already in place, including Goochland, may be exempted from it.

Our ADU Build Process

1. Pre-Construction Planning

Confirming your county's zoning rules and permit type happens first.

2. Construction

You'll get a weekly update on where things stand throughout the build.

3. New ADU Orientation

A full walkthrough before you move in.

4. Close

Final paperwork and keys in hand.

5. One-Year Warranty

We stand behind every build for a full year.

6. Lifetime of Memories

The build is done, but this is just the beginning of memories to come.

On properties with a well and septic system, Pre-Construction Planning also confirms whether your septic can handle a second unit’s wastewater load. An undersized system may need upgrading before the county approves an ADU, regardless of your zoning district. It’s a health department question as much as a zoning one.

ADU Cost in Goochland, VA

We build every ADU on a fixed-price contract. Cost depends on square footage, whether the unit is attached or detached, finish level, and your site’s utility needs. A detached ADU on well and septic typically costs differently than one with existing utility access nearby. We’ll walk your site and give you a straight number before construction starts.

Common ADU questions

Under Goochland's current rules, no. ADUs are restricted to family members of the primary resident, and renting separately from the main home is prohibited. Rules differ by county, so confirm this early for your specific property.

Yes, in every county we serve. Whether it's by-right or a Conditional Use Permit depends on your county, zoning district, and whether the unit is attached or detached. We help you sort out which applies before design work goes too far.

An attached ADU shares a wall or roofline with your main home, think converted space or an addition with its own entrance. A detached ADU is a separate structure on the same lot and generally faces more permitting scrutiny, including Goochland's Conditional Use Permit requirement for detached units only.

Why Build Your ADU With McMahon

As an ADU builder based in Goochland, we’re veteran-owned and locally owned, and Josh has spent close to two decades building homes across this market. We build every ADU fully custom, matched to your existing home’s architecture rather than dropped on your lot as a prefab kit. One team carries your ADU from that first conversation through your one-year warranty.

If an ADU isn’t quite what your property needs, we also build barndominiums, energy-efficient homes, and luxury custom homes across Goochland, Powhatan, Hanover, Richmond, Chesterfield, and Charlottesville.

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Thinking about an ADU on your property?

Let’s talk through what your county allows and what it takes to build it right.