A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Murphy, TX
An ADU (accessory dwelling unit, meaning a small second home on your existing lot) in Murphy costs $180,000 – $450,000 for a full backyard build, while a garage conversion runs $80,000 – $160,000 depending on size and finish. Murphy homes sit on larger Collin County lots than Dallas proper, which gives most properties real options for a detached unit without crowding the primary house. If you’re weighing a home addition, garage conversion, or freestanding ADU here, call (361) 204-4652 for a written price before anything else happens.
Why Murphy Homes Are Different
Murphy is a city of subdivisions built fast, mostly between the late 1990s and mid 2010s, and the housing stock reflects it. You’ll see a lot of brick-on-slab construction with pier-and-beam less common, which matters when we’re tying a new structure’s foundation into an existing slab. Clay soil is a constant across this part of Collin County. It expands and contracts with rain and drought, so foundation ties for an ADU or home addition need engineered piers more often than homeowners expect.
Murphy also has an active code enforcement culture and HOAs in nearly every major subdivision, including Maxwell Creek, Rolling Ridge, and Timberwood. HOA architectural review committees routinely hold up ADU and garage conversion plans over rooflines, siding color, and setback language. We’ve worked through enough Murphy HOA applications to know you should budget 2 to 6 weeks just for review before permits even enter the picture. The permitting office has been responsive, but they will enforce the city’s height and side-yard setback requirements, especially on corner lots along Murphy Road and Betsy Lane.
Climate also shapes the work. Summer heat arrives early and hangs on. That means attic access, plumbing rough-ins, and roof tie-ins are physically harder from June through September, and it pushes some of our Murphy builds into a fall or spring start. We plan material deliveries around that.
Our Main Murphy Services
Most Murphy homeowners come to us through one of three doors: they want a bigger house and are weighing an addition, they have a two or three car garage they don’t park in and want living space instead, or they’ve already decided on a detached ADU and need a builder who will put a real number in writing. Each service has its own Murphy page with full pricing and local detail.
Home Addition Contractor in Murphy
A home addition in Murphy usually means going out, not up. Most lots here are single story with room on the side or rear, and the city allows reasonable lot coverage for a primary dwelling. We handle foundation matching to your existing slab, roofline integration, HVAC extension, and the long list of trim and finish work that makes the addition feel like it was always there. The big local variable is soil. Expect an engineered foundation plan rather than a standard pour, especially if the addition runs along the property line. Read the full breakdown on the Home Addition Contractor in Murphy page.
Garage Conversion Contractor in Murphy
Garage conversions are the fastest way to add a rental unit, in-law suite, or home office in Murphy without changing your home’s footprint. Most Murphy garages are attached two-car spaces with concrete slabs that can carry the load, so the structure work is lighter than a detached build. The catches are usually HVAC, since a garage shares no ducting with the house, and fire separation per city code. We also handle the plumbing runs when a Murphy conversion includes a bathroom or kitchenette. Details and pricing live on the Garage Conversion Contractor in Murphy page.
ADU Builders in Murphy
A detached ADU in Murphy is a full home build in miniature: foundation, framing, roof, electrical, plumbing, insulation, drywall, and a separate utility connection. Lot size matters more than anything. Murphy’s standard residential lots range from about 6,000 to 10,000 square feet, and the city enforces rear yard setbacks closely. We measure the site, review your HOA’s accessory structure rules, and give you a written price that covers the whole job. Read the full process on the ADU Builders in Murphy page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Murphy
We work with studios and materials that hold up in Texas heat. Boxabl and Plant Prefab units arrive partially built and get assembled on a Murphy foundation system, which trims weeks off a traditional build timeline. Tuff Shed structures work well as a finished shell for home offices, and we specify James Hardie siding on most detached ADUs for fire rating and paint longevity. See our brands for the full list and turnaround notes.
Pricing for ADU Company in Murphy, TX
| Service | Typical range in Murphy |
|---|---|
| Detached ADU, 400 sq ft | $180,000 – $240,000 |
| Detached ADU, 600 sq ft | $250,000 – $340,000 |
| Detached ADU, 800+ sq ft | $350,000 – $450,000 |
| Garage conversion, single car | $80,000 – $110,000 |
| Garage conversion, two car | $110,000 – $160,000 |
| Attached ADU (addition style) | $140,000 – $260,000 |
| Bathroom add, part of conversion | $18,000 – $32,000 |
| Kitchenette add, part of conversion | $12,000 – $25,000 |
What pushes a Murphy price up is usually site work: clay soil needing piers, a long utility trench from the main panel or water line, or an HOA that requires brick to match the primary house rather than board-and-batten. The written price we give you before work starts already accounts for those. It does not change at the door.
Neighborhoods We Serve in Murphy
We take ADU, addition, and conversion jobs across the city, from Maxwell Creek and Rolling Ridge near the middle of Murphy to Timberwood and the larger lots along Betsy Lane. Scheduling across this area is straightforward since the city spans only about 5 square miles.
- Maxwell Creek
- Rolling Ridge
- Timberwood
- Murphy Farms
- Hunters Glen
Service Area – Cities Near Murphy
While most of our crews focus on Murphy, we also take jobs in Dallas, TX when the project is an ADU or conversion rather than a full ground-up home. To the west, Plano, TX and Garland, TX share similar HOA and clay soil conditions, and Richardson, TX brings older housing stock into the mix. If you’re just outside Murphy, call and we’ll let you know if your address is on our board.
Serving Murphy, TX - Our Local Coverage Area
We’re based in the Murphy 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 Company in Murphy
Design and estimating typically take 2 to 3 weeks, then HOA review runs 2 to 6 weeks depending on the subdivision. City permit review for an ADU or addition usually adds another 3 to 8 weeks. On average, we break ground in Murphy about 6 to 14 weeks after the signed contract. Call (361) 204-4652 for a realistic schedule on your specific lot.
Most Murphy subdivisions have HOA governing documents that restrict accessory structures, but the rules vary by community. Some allow detached units with architectural review. We check your HOA’s covenants during estimating and flag any conflict before you spend a dollar with us.
Yes. We measure the site, look at your panel and water service, and give you a written line-item price that includes permits, labor, and materials. The estimate is free. Call (361) 204-4652 and we’ll set a time that works for you.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Murphy Customers Say
"Solid build on a home addition. The permit stage dragged, which held things up a few weeks. They were upfront it was out of their hands and the construction itself moved fast and clean."
- Douglas Fenwick"The ADU came out beautiful and the permitting, which terrified me, was handled start to finish. They kept me updated every week so I was never wondering what was happening."
- Shauna Mills"Added a bedroom and bath for our growing family. Honest from day one about what was possible and what it would cost. Showed up when they said and the work has held up great."
- Troy Benavidez
