A fixed-price addition project from our Plano-based DFW team serving Sachse homeowners, with designers, project leads, and tradespeople who finish on the day they said they would. Eleven years, one promise: your quote is your price.
A home addition in Sachse typically runs $120,000 to $400,000, depending on square footage, whether it’s single- or two-story, and how much new plumbing, electrical, and HVAC the space requires. Permits and inspections run through the City of Sachse Development Services Department, and since July 8, 2025 every permit must be submitted through the city’s SmartGov online portal — your contractor has to register an account before a permit can even be pulled. A city-specific cost driver here is Sachse’s two-county split: an addition expands your home’s footprint, so the plat and setbacks must be verified against the correct county records — Dallas County on the south side, Collin County on the north — before design is finalized. Most Sachse additions are on 2000s-era homes, which means matching existing foundation, brick, and roof pitch (rather than fighting an old structure) keeps budgets predictable. UHS works on a fixed-price model with a 1-year workmanship warranty. For a line-item look at where the money goes, see our DFW remodel cost guide.
We handle survey, setbacks, engineering, HOA and permits before demolition. If your lot cannot take the footprint, you will hear it at the first walkthrough.
Fixed scope and a written schedule before anyone breaks ground in your yard.
Most Sachse homes were built in a single decade-long building wave, with a median construction year around 2005 — so the typical house here is now 18-25 years old, and roughly 84% are detached single-family homes sitting on real suburban lots. That combination is exactly why home additions make sense in Sachse: families who moved up into Woodbridge or one of the city’s 2000s-era estate subdivisions love the location and don’t want to relocate, but they’ve outgrown the original floor plan. Rather than buying new, they expand — a primary-suite addition, a bonus room over the garage, a sunroom, or a second-story buildout. UHS Remodeling builds additions that match your home’s existing brick, rooflines, and ceiling heights so the new square footage reads as original, not bolted-on, with a fixed price agreed before we break ground.
We build home additions across Sachse, including Willow Bend, Legacy West, Deerfield, Hunters Glen, Russell Creek, and West Sachse Estates.
Site walk, scope (bedroom, master wing, second story), zoning + setback review, budget alignment.
Architectural drawings, structural engineer review, exterior match planning, MEP routing.
City of Sachse plan review, HOA architectural committee, energy code compliance. Average 3-5 weeks.
Foundation, framing, roof tie-in, MEP rough-in, insulation, drywall, finish-out. 12-22 weeks per scope.
Final inspection, punch list, certificate of occupancy filing, 1-year warranty active.
New slab and framing tied into the existing structure.
Matched brick and tinted mortar at the old-to-new seam.
Design and structural engineering run first, and city plan review plus the HOA architectural committee average three to five weeks before anyone breaks ground.
“An addition in Sachse is half permits, half craft. We pre-meet with the city’s plan review before drawings are stamped — that’s why our additions break ground 6 weeks after contract, not 14.”
From our Plano home addition case study — engineering, permits and the brick match. View all →
Which one is right depends on your lot line, your slab and your roof — not on a catalog.
Renderings from our design studies — the finished Sachse projects are above.
Ranges include foundation, framing, roof, systems and finishes — everything but landscaping.
All ranges include architectural drawings, engineering, materials, labor, permits, foundation, framing, MEP, finishes, and 1-year warranty. Sourced against NARI Cost vs. Value 2025 and your city building code requirements.
Single-room addition (250-450 sqft): bedroom, office, sunroom. Exterior match, standard finishes, full MEP.
Master wing or large family room (450-800 sqft): primary suite + bath, formal dining add-on, or great room expansion.
Second story or full custom (800+ sqft): structural foundation work, full second floor, matched exterior, custom millwork.
Additions live or die on setbacks, easements and lot coverage — and every DFW city writes those rules differently. We have permitted additions across Sachse and the neighboring cities, which means we can tell you in one visit whether the footprint you want is legal on your lot.
We deliver home addition across the northern DFW suburbs. See our home addition in Frisco, Allen, and McKinney.
Daniel B. on a DFW job site.
Your construction lead, Daniel B., runs your addition from framing to final inspection.
Sourced from NARI Cost vs. Value 2025, Texas Real Estate Commission, International Code Council, and 11 years of fielding the same calls in Sachse. Looking for ballpark numbers? Try our cost calculator.
Yes. Home additions are permitted and inspected by the City of Sachse Development Services Department, and since July 8, 2025 all permits must be filed through the city’s SmartGov online portal — your contractor registers an account to pull the permit. Because the addition expands your footprint, the plat and setbacks are checked against the correct county (Dallas on the south side of Sachse, Collin on the north). UHS handles the permitting and inspections as part of the project.
We build the additions Sachse families ask for most as they outgrow their 2000s-era homes: primary-suite additions, room and bonus-room expansions, sunrooms, garage conversions, and second-story buildouts. Because roughly 84% of Sachse homes are detached single-family on suburban lots, there’s usually room to expand outward or upward. We match your existing brick, ceiling heights, and roof pitch so the new space looks original to the house.
Home additions in Sachse generally range from $120,000 to $400,000. The final number depends on the size of the addition, whether it’s a single-story or two-story buildout, and how much new plumbing, electrical, and HVAC the space needs. Since most Sachse homes date to the 2000s, matching the existing foundation, brick, and roofline keeps the project predictable. UHS Remodeling gives you a fixed price before construction starts, backed by a 1-year workmanship warranty.
Single-room additions take 10-18 weeks including permitting. Multi-room wing additions run 6-11 months including design and permitting. Second-story additions and estate-scale projects take 10-16 months.
Yes, second-story additions are permitted in most Sachse residential zones, subject to maximum building height, setback, and lot coverage requirements. Not every original foundation is adequate for a second-story load – we run a structural feasibility check early in design.
Yes. Garage conversions are one of the most cost-effective Sachse additions because the foundation, walls, and roof already exist. We convert garages into home offices, playrooms, gyms, and in-law suites. The conversion requires a permit, new flooring, and HVAC/electrical tie-in.
We source matching or visually identical exterior materials – brick from the same manufacturer or salvaged brick yards, stone matched to the existing, siding and roofing matched. Matching materials may add 3-6 weeks to procurement but ensures the addition does not look bolted-on.
Yes. The City of Sachse Building Inspection Department requires permits for any addition. Some Sachse neighborhoods also have HOA architectural review requirements. UHS handles both submissions.
Usually, yes – especially for rear additions and garage conversions that do not break into the existing home until the final tie-in phase. For second-story additions, most homeowners relocate for 4-10 weeks during structural phases.
Yes. Every addition we build is engineered by a licensed Texas structural engineer. We handle the full foundation scope and all structural framing including steel beams, load transfers, and second-story floor systems.
Yes. A well-designed Sachse addition typically returns 70-90% of project cost on resale. Master suite expansions and kitchen/great room extensions return close to 100%. An addition also lets a family stay in the neighborhood rather than selling and moving.
Call UHS Remodeling at (469) 850-7087 or fill out the contact form. Free in-home consultation, feasibility assessment, preliminary ROM within 7-10 business days.
North Texas sits on highly expansive clay soil that swells during wet months and shrinks during summer droughts, which can shift foundations by several inches over seasonal cycles. That is why every room addition we build in Sachse and Frisco starts with a foundation plan designed by a licensed structural engineer for the specific soil conditions of the lot. Typical solutions include steel-reinforced slab foundations and concrete piers that reach below the active soil zone, so the new addition moves with the original home instead of pulling away from it. Skipping this step is the most common cause of cracked brick, sticking doors, and separated rooflines in DFW additions.
Tell us what you need more of and we’ll walk the lot, check the setbacks, and give you an honest budget range before you commit to anything.
