Custom Home Plans
From $1,800
A complete permit set for a new home, from your sketch, a plan you like, or a conversation about how you live.
House plan drafting · Utah · Since 1975
House Plan Drafting in Utah. Drawn and Engineered Under One Roof.
Custom home plans, additions, ADUs, shops and builder plan sets, drafted to Utah code and engineered by a Utah-licensed PE when your building department requires a stamp. Plans start at $1,800, with a fixed-fee quote before we draw a line.
The short answer
What House Plan Drafting Includes.
House plan drafting turns your idea, sketch or an existing plan into the construction drawings a Utah building department needs to issue a permit: site plan, foundation plan, floor plans, elevations, sections and, when required, engineered framing and structural details.
Ludlow Engineering drafts the plans, engineers them and surveys the lot in the same office, so the drawings, the stamp and the site plan all agree.
- PriceCustom house plans from $1,800
- Time6–10 weeks for a full custom home
- EngineeringUtah PE stamp when your jurisdiction requires it
- Code2021 IRC with Utah amendments (as of 2026)
01 · Project types
What We Draft
Residential projects from a single floor plan to a complete engineered permit set. Prices are 2026 planning ranges for drafting; engineering is quoted with it when needed.
Additions & Remodels
$1,500–$4,500
We measure what’s there, draw the existing conditions, then design the addition or remodel to tie in cleanly.
Basement Finishes
$800–$2,200
Layout, egress windows, framing and the details most building departments ask for on a finish permit.
ADUs & Guest Houses
$1,800–$4,500
Detached or attached accessory units drawn to your city’s ADU rules and setbacks.
Shops, Garages & Barns
$1,200–$3,500
Detached garages, shops and pole buildings, with foundation and framing engineered for the site.
Builder Plan Sets
Quoted
Repeatable plans and plan variations for Utah homebuilders, with engineering that can be reused lot to lot.
Floor Plans Only
$600–$1,800
A clean, dimensioned floor plan for pricing, a bank, a realtor or design decisions before a full set.
As-Built Drawings
$800–$3,000
Measured drawings of an existing home or building for a remodel, appraisal question or records.
02 · Deliverables
What’s in a Ludlow House Plan Set
A typical permit set for a new single-family home. Sheets marked in gold are prepared or stamped by our engineer when the project needs them.
- PDF set for permit submission, sized for your building department’s review.
- Printed sets on request for the builder and the job site.
- CAD files on request for your builder or designer.
- Plan-review responses: we answer the building department’s comments on our drawings.
Not included unless quoted: energy calculations beyond the code forms, mechanical and electrical design, truss shop drawings (your truss supplier provides those), and permit fees.
Sheet IndexTypical single-family
permit set
permit set
- A0Cover & site planProperty lines, setbacks, building footprint, driveway and utilities, drawn from a survey when the lot needs one.
- A1Foundation planFootings, foundation walls, piers and dimensions for the excavator and the inspector.
- A2Floor plansEvery level, fully dimensioned: walls, doors, windows, stairs, egress and room uses.
- A3Exterior elevationsAll four sides with heights, roof pitch, materials and finished-grade lines.
- A4Building sectionsCut-throughs that show wall and roof assemblies, insulation and ceiling heights.
- S1Framing plansFloor and roof framing, beams, headers and bearing lines, sized by the engineer.
- S2Structural details & notesConnections, shear walls and hold-downs, with the snow, wind and seismic design criteria for your site.
Ludlow Engineering · Nephi, UtahGold sheets: Utah PE
03 · One office
Drafting, Engineering & Survey Together
Most house plans pass through three hands: a drafter, an engineer and a surveyor. At Ludlow they share an office, which saves you coordination, time and redraws.
The lot comes first
A topographic survey shows the slope, so the foundation, garage and driveway are designed to the real ground. A boundary survey and site plan show the setbacks the building department checks first.
Engineering that matches the drawings
When a stamp is required, our engineer sizes the beams, footings and shear walls from the same drawings, so there’s no gap between the architectural and structural sheets. See engineer-stamped house plans for engineering-only packages.
After the pour
We can stake the house on the lot before you dig and check its location and elevation once the foundation is in.
04 · Utah specifics
What Utah Building Departments Look For
A plan that works in one Utah town can need changes in the next. These are the requirements that shape house plans here.
CodeThe 2021 IRC with Utah amendments
As of 2026, Utah’s State Construction Code adopts the 2021 International Residential Code with state amendments (Utah Code § 15A-2-103). Your city or county enforces it and may add local rules.
SnowRoof loads change with elevation
Utah determines ground snow loads by location and elevation, so a roof designed for Nephi may need heavier framing in Fairview, Heber or Park City. Your plans state the design snow load for your site.
SeismicEarthquake design matters here
Much of the Wasatch Front and central Utah is in a high seismic design category, which drives bracing, shear walls and hold-downs. It’s one of the most common reasons a plan needs an engineer.
SiteSetbacks, slopes and septic
Zoning setbacks, steep lots, irrigation easements and, on rural parcels, septic and well locations all affect where and how the house can sit. A site plan settles them before the house is drawn.
05 · Process
How a Ludlow House Plan Comes Together
Four steps from first call to permit set. You approve the layout before we finish the construction drawings.
Fixed-fee quote
Send the address, a sketch or plan you like, photos and your timeline. We confirm what the project and the building department need and quote a fixed fee.
Floor plan & review
We draft the layout and elevations. You mark them up, and we revise until the plan fits how you’ll live in it.
Construction set
Foundation, sections, framing and details are drawn, and our engineer stamps the structural sheets when they’re required.
Delivery & review support
You receive the PDF set for submission, and we answer the building department’s plan-review comments on our drawings.
06 · Pricing and timing
House Plan Drafting Prices in Utah (2026)
Planning ranges for typical projects. Your quote is a fixed fee for your plans, with engineering and survey listed separately when they’re needed.
| Project | Typical drafting cost | Typical time |
|---|---|---|
| Floor plan only | $600–$1,800 | 1–3 weeks |
| Modify an existing or purchased plan | $800–$2,000 | 2–4 weeks |
| Basement finish | $800–$2,200 | 2–4 weeks |
| Shop or detached garage | $1,200–$3,500 | 2–5 weeks |
| Addition or major remodel | $1,500–$4,500 | Project specific |
| ADU or guest house | $1,800–$4,500 | 4–8 weeks |
| Custom home under 2,500 sq ft | $1,800–$4,500 | 6–10 weeks |
| Custom home 2,500–5,000 sq ft | $3,500–$7,500 | 6–10 weeks |
| Custom home over 5,000 sq ft | $6,500+ | Project specific |
| Complete package: drafting + PE-stamped engineering | $3,500–$8,500 | 4–8 weeks |
| As-built / measured drawings | $800–$3,000 | 1–3 weeks |
Survey work for the lot is quoted separately: boundary surveys from $1,025 and topographic surveys $1,500–$4,500. See survey costs.
07 · Our record
Plans Built on Five Decades of Utah Work
Our project records since 2000 include 110 foundation and structural design projects, 142 site plans and 142 topographic surveys, most of them for homes and buildings in central Utah.
110Foundation & structural design projects since 2000
142Site plans since 2000
67FHA / lender foundation inspections
1975Serving Utah since
Structural design by county
Sanpete (29), Utah (28), Juab (22), Millard (16), Beaver (5), Salt Lake (1), Sevier (1), Carbon (1). Recent house and structural plan sets include homes in Nephi, Levan, Genola, Payson, Santaquin, Manti and Ephraim.
Homeowners and builders
Owners building their own home, families adding on or finishing a basement, and Utah homebuilders who need repeatable, engineered plan sets.
Plans and reports lenders accept
Construction lenders need a complete plan set to price and draw a loan. For FHA and other loans on manufactured homes, our engineers provide foundation certifications: 67 since 2000.
Drawn for the reviewer
We draft to the code and local rules of the city or county that will review the plans, and answer their plan-review comments on our drawings.
08 · Service area
House Plan Drafting Across Utah
We’re in Nephi, in the center of the state. Drafting is coordinated by phone, email and site photos anywhere in Utah, with site visits and surveys where the project needs them.
Central Utah
Nephi, Mona, Levan, Manti, Ephraim, Mount Pleasant, Fillmore and the towns around them. Site visits, measuring and permit questions handled from our Nephi office.
Request a quote →Utah County & the Salt Lake Valley
Payson, Santaquin, Spanish Fork, Genola and north into the Salt Lake Valley. Plans drawn to each city’s ordinances and plan-review requirements.
Request a quote →Ogden & Weber County
Residential drafting for Ogden, North Ogden, Roy and the Weber County benches, coordinated by phone, email and site photos.
Request a quote →Park City, Heber & Kamas
Custom homes and additions where heavier snow loads, steep lots and HOA design rules shape the plans.
Request a quote →09 · Direct answers
House Plan Drafting Questions, Answered.
How much does house plan drafting cost in Utah?
Custom house plans start at $1,800. Most custom homes under 2,500 square feet run $1,800 to $4,500 for drafting; larger homes run $3,500 to $7,500 or more. A complete package with drafting plus Utah PE-stamped structural engineering typically runs $3,500 to $8,500. Every Ludlow quote is a fixed fee.
How long does it take to draw house plans?
A full custom home usually takes six to ten weeks, depending on how quickly design decisions are made. Changes to an existing plan take two to four weeks, and floor plans alone one to three weeks.
Do I need an engineer's stamp on my house plans?
It depends on the building department and the design. Many Utah jurisdictions require engineered framing or foundation details for larger spans, steep or unusual sites, heavy snow areas, or anything outside the code's prescriptive tables. Because our engineers work in the same office, we can add a Utah PE stamp when it's needed.
What building code do Utah house plans follow?
As of 2026, Utah's State Construction Code adopts the 2021 International Residential Code with Utah amendments (Utah Code § 15A-2-103). Your city or county building department enforces it and may have local requirements on top.
Can you draw plans for an addition or remodel?
Yes. We measure the existing house first, draw the existing conditions, then design the addition, remodel or basement finish so it ties in to what's there.
Can you modify a plan I bought online?
Usually, yes. Stock plans often need changes for the lot, Utah snow and seismic loads, or local requirements. We redraw or adjust the plan and add engineering where it's needed.
Do I need a survey before house plans?
Often. Many building departments want a site plan showing property lines and setbacks, and sloped lots need a topographic survey to set the foundation and driveway. We do both in-house, so the plans start from accurate site information.
Do you submit the building permit?
Owners or builders usually submit the permit. We provide the drawings and answer plan-review comments within our scope.
What do you need from me to get started?
The property address or parcel number, a sketch, photos or a plan you like, the approximate size and number of rooms, and your budget and timeline. You can attach files right on our quote form.
Do you work with homebuilders?
Yes. We draft custom homes and repeatable plan sets for Utah builders, with engineering that can be reused from lot to lot when the design and site conditions allow.
Related: engineer-stamped house plans · as-built drawings · site plans · topographic surveys · our project record
Licensed Utah engineering & surveying · Since 1975
Bring Us the Idea. We’ll Draw It.
Send the address, a sketch, photos or a plan you like. Attach them to the quote form and we’ll reply with a fixed fee, usually within one business day.
Expert Floor Plan Drafting Services by Ludlow Engineering
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Who's behind this page
Licensed Utah Surveyors & Engineers Since 1975.
Ludlow Engineering has surveyed and engineered Utah property for 51 years. Every survey and plan is prepared under a licensed professional, not handed off.
J. Brett Ludlow
Professional EngineerState of Utah
Stamps our site plans, foundation designs and civil engineering.
Daryl Penrod
Professional Land SurveyorState of Utah No. 5331527
Directs our boundary, topographic, ALTA and subdivision surveys.
Travis Ludlow
Partner & Managing MemberMBA
Managing Member of Ludlow Engineers and Associates
Since 197551 years, family-run in Nephi
5,606projects tracked since 2000
1,200+survey maps filed with Utah counties
19 countiesacross Utah where we've worked
Our foundation & structural design record
110 foundation & structural design projects since 2000, in 8 Utah counties.
Most recent: Oct 2026.
Recent projects
- Foundation & structural designNephi, Juab County
- Foundation & structural designEphraim, Sanpete County
- Foundation & structural designEphraim, Sanpete County
- Foundation & structural designNephi, Juab County
- Foundation & structural designNephi, Juab County
Counts come from Ludlow Engineering's project records (2000–present, updated Oct 2026). Client names are never shown.