A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Richmond
Most Richmond homeowners who call us have the same two questions: what will this cost, and when can you start. Those are fair questions, and you deserve straight answers before anyone swings a hammer. We’re Lodgewick ADU Houston, part of the Kingswell family of home-service companies, and we build ADUs, garage conversions, and home additions in Richmond under The Kingswell Guarantee: a written price before work begins, a defined arrival window, a clean job site, and a written guarantee on every project. If you’re planning a detached ADU, a garage conversion, or a prefab installation anywhere from Veranda to Pecan Grove, call (361) 326-2313 and we’ll walk you through the real numbers for your lot.
Why Lodgewick ADU Houston Is Richmond’s Preferred ADU Builders Company
Richmond homeowners tend to ask harder questions than most, and we like that. They’ve watched neighbors get burned by builders who quote a price and then “discover” problems once the slab is poured. Our answer to that is simple: every Lodgewick project starts with a written price, and that price doesn’t change at the door. We also put the 365-Day Done Right Promise in writing on every build. If the work isn’t right, we come back and make it right, free of charge, for a full year.
Our crews know Richmond’s neighborhoods, from the newer lots in Aliana and Harvest Green to the established streets off FM 359 and Crabb River Road. That matters when your ADU has to meet Richmond’s specific fire code requirements, tree preservation rules, and drainage reviews, and those details rarely show up on a generic Houston builder’s checklist. Russ Delmar, who leads our team, has walked enough Richmond permitting offices to know exactly which plan details get flagged here, and we get them right the first time.
When you call, a live person answers. Not a voicemail, not a chatbot. If you have a question about your build at 9 p.m. on a Tuesday, you’ll talk to a real human who can look at your file and give you a straight answer.
ADU Contractor in Richmond
An ADU Contractor in Richmond handles the full build: site prep, foundation, framing, utilities, finishes, and the paperwork that stands between you and a signed-off project. Richmond has its own permit process through the city’s Community Development office, and it’s not a copy of Houston’s. You need a contractor who has pulled Richmond permits before, not someone learning the city’s fee calculator on your dime.
For a typical detached ADU in Richmond, plan on $180,000 to $340,000 depending on size, finishes, and site conditions. A garage conversion runs lower, generally $90,000 to $180,000. If you’re going prefab with a brand like Boxabl or Mighty Buildings, expect $120,000 to $250,000 installed. These are real numbers for this market, and we’ll put your exact figure in writing before work starts.
Permitting and Plan Review
Richmond requires a pre-submittal plan review before you can even file for a building permit, and if your site plan misses the city’s required 5-foot side-yard setbacks or a tree preservation zone, the whole submission gets kicked back. We handle every drawing, every fee, and every inspection so you don’t have to.
Site Work and Foundation Choices
Most Richmond ADUs go on slab-on-grade foundations, but lots near the Brazos River or its tributaries may need pier-and-beam or even an elevation certificate before the city will sign off on the foundation plan. We check flood zone maps and soil reports before quoting, so your written price already accounts for what the site actually needs.
ADU Design in Richmond
Good ADU Design in Richmond starts with the lot, not the floor plan. Richmond’s residential lots vary wildly: some are wide and flat in newer master-planned communities, others are long and narrow off older streets with mature oaks that the city will not let you touch. Design means getting the structure placed so it clears setbacks, preserves protected trees, drains properly, and actually fits the way your family lives.
Our design phase includes site measurements, a preliminary plan, and a hard look at what Richmond’s Community Development office will flag before you spend money on full construction drawings. That review alone has saved our Richmond clients thousands. Design fees generally run $4,000 to $12,000 depending on complexity, and that cost rolls into your written project total.
Working With Prefab Manufacturers
If you’re leaning toward a prefab ADU, we work directly with Plant Prefab, Boxabl, Mighty Buildings, and similar manufacturers to adapt their standard plans to Richmond’s code requirements. We handle the foundation, utility connections, and all local permitting while the factory builds your walls and roof.
Custom Detached and Studio ADUs
For custom builds, we design around your lot’s constraints first. That means fewer change orders later. A studio ADU with a bath and kitchenette typically runs $130,000 to $210,000 in Richmond. A larger two-bedroom unit pushes toward the top of the range. We’ll tell you what your budget buys before we ask for a deposit.
Trusted Brands We Service in Richmond
We’re hands-on with the ADU brands Richmond homeowners ask about most. We’ve installed and finished units from ADU Builders partners including Mighty Buildings, Boxabl, and Plant Prefab, plus we use Tuff Shed structures for studio conversions and James Hardie siding on nearly every custom build we frame. Because we have direct relationships with these manufacturers, we can get replacement panels, hardware, and materials to Richmond quickly, and we know which prefab models pass Richmond’s specific fire and wind load requirements without expensive modifications.
Common ADU Builders Problems We See in Richmond Homes
- Elevation certificate surprises near the Brazos. Richmond’s Community Development office requires elevation certificates for any ADU sited in a flood-prone zone. Builders who skip that check get their foundation plan rejected, and the homeowner loses weeks waiting for a surveyor.
- Stop-work orders from skipped drainage inspections. Richmond requires a pre-construction drainage inspection before any excavation. Start digging without it and the city will shut the whole site down, sometimes for weeks.
- Side-yard setback redesigns. Richmond enforces a 5-foot side-yard setback that many Houston-area builders forget to check. If your ADU plan drifts too close to the property line, the city flags it and you’re paying for a redesign mid-project.
- Tree preservation zone conflicts. Older Richmond neighborhoods have mature oaks with city-protected root zones. A plan that doesn’t account for those trees will stall at plan review, and moving the structure after the fact is never cheap.
Pricing for ADU Builders in Richmond, TX
Here are the honest ranges for Richmond, not national averages. A detached one-bedroom ADU runs $180,000 to $260,000. A two-bedroom unit runs $240,000 to $340,000. Garage conversions run $90,000 to $180,000. Prefab units from Boxabl or Mighty Buildings land between $120,000 and $250,000 installed. ADU Builders in Richmond pricing moves with site conditions, foundation type, finish level, and permitting fees. Richmond charges its own permit fee schedule, separate from Fort Bend County’s, and your written quote will include every line item so nothing shows up as a surprise. Call (361) 326-2313 for a free estimate and we’ll put your number in writing.
Key Takeaways
- Richmond requires a pre-submittal plan review and its own fee calculator, separate from Houston permitting.
- Elevation certificates are mandatory for ADUs in flood zones near the Brazos River.
- 5-foot side-yard setbacks and tree preservation zones can force redesigns if not checked early.
- Written pricing means no change orders at the door; we honor the number we quote.
We Also Serve Cities Near Richmond
Our crews are based to serve Richmond and the surrounding area, including Sugar Land, Katy, Stafford, and Missouri City. If you’re a few miles outside Richmond proper, we still handle your permitting, your build, and your warranty the same way. Call (361) 326-2313 and we’ll confirm coverage for your lot.
Serving Richmond, TX - Our Local Coverage Area
We’re based in the Richmond area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Builders in Richmond
Richmond typically takes 4 to 8 weeks for ADU permit approval after a complete submittal, assuming your plan passes the pre-submittal review on the first round. Delays usually come from missing elevation certificates, tree preservation conflicts, or drainage documentation, not from city backlog. Call (361) 326-2313 if you want us to review your site before you file, and we’ll tell you what the city will flag.
Yes, Richmond allows an ADU on a lot with a detached garage, but the combined lot coverage and setback requirements apply to both structures together. You may need to convert part of the garage rather than build a separate unit if your lot is small. We’ve handled both scenarios in Richmond and can tell you which approach fits your lot after one site visit.
The most common price changers in Richmond are foundation adjustments for expansive soil or flood zone requirements, tree preservation redesigns, and utility connection fees from the city. We minimize these by checking soil reports, flood maps, and tree surveys before quoting, so your written price already includes the site’s actual conditions. If something does change, you’ll know in writing before any additional work begins.
Richmond follows Fort Bend County fire code requirements, which generally require fire sprinklers in detached ADUs over 400 square feet or when the unit is farther than 150 feet from a fire hydrant. Our plans include sprinkler specifications when required, and we factor that cost into your written quote up front, rather than springing it on you after framing.
Yes. Every Lodgewick ADU build in Richmond includes the 365-Day Done Right Promise in writing before work begins. If something fails within the guarantee period, we come back and fix it free of charge. That’s not a verbal promise, it’s a written guarantee delivered with your contract. Call (361) 326-2313 for a free estimate and we’ll put every commitment in writing.
Planning an ADU in Richmond means dealing with flood zone maps, tree preservation rules, and a city permit process that doesn’t forgive lazy paperwork. We’ve built enough ADUs here to know exactly what gets flagged and what gets approved, and we put your price in writing before the first inspection. Call (361) 326-2313 today to schedule a free estimate, and let’s get your project scoped correctly from day one.
Written by Russ Delmar, Owner at Lodgewick ADU Houston, serving Richmond since 2010.
