Floor Plan Drafting · San Marcos, TX
Professional Floor Plan Drafting
for San Marcos, TX Homes
As-built drawings, permit-ready floor plans, and renovation layouts for San Marcos homeowners, investors, and contractors. Accurate CAD drawings with a 14-day money-back guarantee.
14-day money-back guarantee · permit-ready delivery
Common Uses in San Marcos
Local Intelligence
What San Marcos Homeowners Need to Know Before Submitting
Size & Zoning Rules
Accurate floor plans are the foundation of any ADU, garage conversion, or addition permit in San Marcos — Planning & Development Services will not accept a permit application without them. San Marcos's current ADU size cap is 1,000 sq ft — within the typical range for most floor plan configurations.
San Marcos currently requires owner-occupancy on the primary parcel — meaning one of the units (the main home or the ADU/conversion) must be your primary residence.
Homeowners in San Marcos who document and legitimize their square footage correctly are positioning a home in a rental market where 1-bedroom units average approximately $1,189/month.
Permit Process & Fees
Floor plans submitted to Planning & Development Services as part of a permit application must include a site plan, floor plans, all four elevations, an electrical plan, and energy compliance documentation — plus if structural changes are involved, a licensed engineer must stamp the structural drawings.
Visit Planning & Development Services ↗Construction Cost Context
San Marcos's adu / renovation construction costs run $150–$210 per square foot — a moderate range driven by labor markets, local code complexity, and finish level. Our drawings are priced at a fraction of what a full-service architect would charge to produce the same permit set.
⚠ Common Pitfall in San Marcos
Homeowners in San Marcos often face challenges with water and sewer connections for ADUs, as the city requires developers to verify capacity and, in many cases, upgrade existing lines to meet code—an unexpected cost that can add $5,000–$15,000 depending on proximity to mains. Additionally, many neighborhoods fall under older HOA covenants that don’t explicitly address ADUs, leading to potential conflicts or even prohibitions that can delay or halt projects entirely.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience with San Marcos permitting, that missing timeline and cost-per-sqft figure aren't accidental gaps — this market simply doesn't have reliable local averages published, so treat any number you see elsewhere as a state-level estimate and get two or three local contractor bids plus a direct call to Planning & Development Services before you budget anything. With STR allowed and only 20% HOA prevalence, the upside here is real, but I've seen too many homeowners anchor to a cost figure that had nothing to do with San Marcos-specific labor and material pricing."
Market Context
San Marcos has a median home value of $310,000. Comparable renovation projects in this market typically add 25% to resale value.
Neighborhoods in San Marcos with the strongest renovation and resale value potential include Hughson Heights, Blanco Vista, Trace, La Cima, Cottonwood Creek. Established single-family neighborhood with larger lots, within walking distance of Texas State University and downtown San Marcos, generating strong student/employee rental demand.
Permit Process
Permit applications are reviewed by the Planning & Development Services. Design review: Yes - in historic districts only.
San Marcos falls within Seismic Design Category A, which affects structural requirements for any new addition tying into the existing structure.
Local Financing Resources
Local Floor Plan Lenders in San Marcos
These lenders offer HELOC and renovation financing that often requires accurate as-built drawings in Hays County. Compare terms before committing.
Local credit union with a dedicated San Marcos branch offering a variety of home mortgage loan products for the greater San Marcos area.
Visit Lender ↗Federal credit union with a San Marcos branch at 904 Bugg Lane; offers Home Equity Line of Credit and mortgage products to members.
Visit Lender ↗Offers a dedicated ADU Fixed Home Renovation Loan with up to 30-year term and a 9-month interest-only construction period — purpose-built for ADU financing.
Visit Lender ↗Texas-based credit union offering construction loans to qualified individual buyers building a primary or secondary home; works with licensed builders.
Visit Lender ↗Specialty ADU lender operating in Texas (NMLS #2412747); RenoFi Loans use the After-Renovation Value to give borrowers 11x more borrowing power on average.
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted Local Contractors in San Marcos
Need a contractor once your drawings are ready? These are vetted local options. Independent — no referral fees paid or received.
Build With A Plan provides drawings only. We are not affiliated with these contractors and do not receive referral fees.
Free — No Obligation
Tell Us What You Need Drawn
As-built documentation, permit plans, or a renovation layout — send us the property and what it’s for, and we’ll confirm scope and turnaround free before any commitment.
- ✓Confirmation of exactly which drawings your permit needs
- ✓Verified dimensions and square footage
- ✓Door, window, and fixture schedules
- ✓Turnaround confirmed up front — 10 business days standard
- ✓A straight answer within 48 hours
Get My Project Reviewed — Free
Takes 60 seconds. We'll deliver your personalized report within 48 hours.
Request Received
Your feasibility report is being prepared. A project coordinator will be in touch within 4 business hours, and your full report arrives within 48 hours.
What We Deliver
What's Included in Your San Marcos Floor Plan Package
What You Get
San Marcos Floor Plan Packages
One-time fee, no retainer, no hourly billing — your exact scope and price confirmed on a free call.
- ✓As-built floor plans (all levels)
- ✓Verified square footage
- ✓Door & window schedule
- ✓Room labels and dimensions
- ✓PDF + DWG delivery
- ✓10 business day turnaround
- ✓Everything in Starter
- ✓Electrical layout documentation
- ✓Plumbing fixture locations
- ✓Site plan with setbacks
- ✓Code notations for permit submittal
- ✓1 round of revisions
- ✓Everything in Standard
- ✓Proposed renovation overlay
- ✓3D massing model
- ✓HOA submission package
- ✓Title 24 energy compliance
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
How It Works
Your Floor Plans in 3 Steps
Share Your Home Details
Provide your property address, room measurements, and photos. We'll confirm your order and assign a drafting coordinator within 4 business hours.
We Draft Your Plans
Our CAD team converts your measurements into precise, scaled floor plans — formatted for San Marcos's building department and TX code standards. Delivered in 10 business days.
Download and Use
Receive your drawings in PDF and DWG format — ready for permit submittal, contractor bidding, listing agents, appraisers, or HOA submission.
Common Questions
San Marcos Floor Plan Drafting FAQs
When do I need professionally drafted floor plans in San Marcos? +
You need accurate floor plans for: permit applications (required by San Marcos's building department for any structural work), refinancing or home equity loans, selling your home (accurate square footage documentation), renovation contractor bidding, HOA design review submissions, and insurance claims. Our as-built drawings capture your home's exact current dimensions.
What is an as-built floor plan and why do I need one in San Marcos? +
An as-built floor plan documents your home as it currently exists — including all room dimensions, door and window locations, wall thicknesses, and square footage. These are required when the original permit drawings are unavailable or the home was modified without permits. San Marcos's building department requires accurate as-builts when you apply for renovation or addition permits on older homes.
How much does floor plan drafting cost in San Marcos? +
Our floor plan drafting packages for San Marcos cover measured floor plans for all levels, room labels, door and window schedules, and verified square footage. Local drafting services typically charge $1,500–$4,000 for comparable work. Contact us for current pricing and to discuss your project. 14-day money-back guarantee.
How do you create floor plans remotely for my San Marcos home? +
You provide basic measurements (room dimensions, door/window sizes) and photos of each room. Our drafting team converts these into accurate CAD drawings with precise dimensions, wall thicknesses, and notations. For permit-grade as-built drawings, we may request additional measurements or a site visit from a local partner. We serve all San Marcos neighborhoods remotely.
What format are the floor plan drawings delivered in? +
We deliver drawings in PDF (for printing and permit submission) and DWG/DXF (AutoCAD-compatible format for contractors, engineers, and architects to work from). All drawings are formatted to San Marcos building department standards and include title block, scale, and code notations required for permit submission.
Can you draft floor plans for a rental property or multi-unit building in San Marcos? +
Yes — we draft floor plans for single-family homes, duplexes, triplexes, ADUs, condos, and small commercial properties in San Marcos. Multi-unit buildings are priced based on the total number of units and floors. Contact us for a custom quote if your property has more than 4 units.
Will accurate floor plans increase my home's value in San Marcos? +
In San Marcos, where median home values are around $310,000, inaccurate or missing square footage records can suppress list price and appraisal value. Professional as-built drawings establish defensible square footage for appraisers and buyers. Unpermitted additions documented and legitimized through permit drawings can recover thousands in appraised value.
Do I need floor plans to get an ADU or addition permit in San Marcos? +
Yes — San Marcos's building department requires accurate floor plans as part of any ADU, garage conversion, or addition permit application. Our packages combine floor plan drafting with the full permit-ready drawing set (site plan, elevations, electrical, Title 24) needed for plan check submittal. If you only need the floor plans themselves, our Starter package covers that.
Can you draft floor plans from old blueprints or photos in San Marcos? +
Yes — we can redraft from original blueprints, scans of old permit sets, hand-drawn sketches, or room photos combined with your measurements. We regularize old drawings to current CAD standards and update them to reflect any modifications made since original construction. This is a common service for San Marcos homes built before the 1990s.
Nearby Cities
Also Available in San Marcos
Planning to build an ADU? See our ADU design service.
Next Steps
Ready to Move Forward With Your San Marcos ADU?
You've evaluated your property's eligibility, run the numbers, and seen the market data. The next step is getting permit-ready architectural drawings to submit to Planning & Development Services.
Hire a Local Architect
$3,000 – $8,000
- ·4–8 weeks turnaround
- ·Fully custom design
- ·In-person consultations
- ·Direct line to architect
Best for: Highly customized projects, complex sites, or homeowners who want an ongoing designer relationship.
Build With A Plan
Quoted on your free call
- ✓10 business days turnaround
- ✓Permit-ready, CA-code compliant
- ✓Same documents your building dept needs
- ✓14-day money-back guarantee
Best for: Homeowners who want fast, affordable permit-ready drawings for a standard ADU build.
Both options produce permit-ready architectural drawings accepted by Planning & Development Services. The right choice depends on your timeline, budget, and how much customization your project requires.