Floor Plan Drafting · Katy, TX
Professional Floor Plan Drafting
for Katy, TX Homes
As-built drawings, permit-ready floor plans, and renovation layouts for Katy 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 Katy
Local Intelligence
What Katy Homeowners Need to Know Before Submitting
Size & Zoning Rules
Accurate floor plans are the foundation of any ADU, garage conversion, or addition permit in Katy — Permit & Building Services will not accept a permit application without them. Katy's current ADU size cap is 900 sq ft — within the typical range for most floor plan configurations.
Katy does not impose an owner-occupancy requirement, so you can rent both the main home and any ADU or conversion as investment units.
Homeowners in Katy who document and legitimize their square footage correctly are positioning a home in a rental market where 1-bedroom units average approximately $1,276/month.
Permit Process & Fees
Permit & Building Services permit fees for this project type typically range from $1,400 to $3,200 depending on project valuation and scope. Plan check runs approximately 6 weeks — though each correction cycle adds 3–6 weeks, which is why code-compliant drawings matter so much.
Floor plans submitted to Permit & Building 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 Permit & Building Services ↗Construction Cost Context
Katy's adu / renovation construction costs run $140–$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 Katy
Most Katy neighborhoods sit under a Municipal Utility District (MUD) rather than city water and sewer, and each MUD sets its own tap fees and impact fees separately from the city's building permit — homeowners are often blindsided when their MUD quotes an extra $3,000-$6,000 for a new sewer tap on the ADU. Because many Katy subdivisions also carry deed-restricted HOAs layered on top of city zoning, you'll typically need HOA architectural committee sign-off before Permit & Building Services will even log your application, and that review can run parallel or add weeks if the HOA wants changes to match brick color or roof pitch with the main house.
Expert Verdict — Marcus Reid, Licensed Designer
"In my experience with Katy submittals, that 6-week plan check figure and the per-square-foot cost are really state-level estimates, not local truth — I'd get actual contractor quotes and call Permit & Building Services directly before penciling in a start date, since with 72% HOA coverage here, incomplete drawing sets or HOA architectural review can easily push timelines past two months."
Market Context
Katy has a median home value of $320,000. Comparable renovation projects in this market typically add 25% to resale value.
Neighborhoods in Katy with the strongest renovation and resale value potential include Kelliwood, Seven Meadows (Avalon Enclaves), Cinco Ranch, Firethorne, Cane Island. Older established neighborhood with larger lot sizes providing the best physical and regulatory flexibility for detached ADUs.
Permit Process
Permit applications are reviewed by the Permit & Building Services, with a plan check timeline of approximately 6 weeks. Permit fees in Katy range from $1,400 to $3,200 depending on project scope.
Katy 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 Katy
These lenders offer HELOC and renovation financing that often requires accurate as-built drawings in Harris County. Compare terms before committing.
Greater Houston-area CU serving Katy members; HELOC up to 80% of home's fair market value (max APR 18%), plus home improvement remodel loans at competitive rates.
Visit Lender ↗Houston-area CU partnered with RenoFi offering renovation loans up to $350,000 that can finance ADU construction based on after-renovation home value.
Visit Lender ↗Specialty ADU lender operating in Texas; RenoFi Loans borrow up to 90% of the home's post-construction value, purpose-built for ADU/granny-flat projects.
Visit Lender ↗Texas-wide CU offering home improvement loans up to 95% LTV with a $25,000 minimum and rates as low as 7.89% APR, suitable for ADU construction.
Visit Lender ↗Texas bank offering construction, land, and lot loans with competitive rates and quick decisions, applicable to ADU/new-build projects.
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 Katy
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 Katy Floor Plan Package
What You Get
Katy 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 Katy'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
Katy Floor Plan Drafting FAQs
When do I need professionally drafted floor plans in Katy? +
You need accurate floor plans for: permit applications (required by Katy'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 Katy? +
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. Katy'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 Katy? +
Our floor plan drafting packages for Katy 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 Katy 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 Katy 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 Katy 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 Katy? +
Yes — we draft floor plans for single-family homes, duplexes, triplexes, ADUs, condos, and small commercial properties in Katy. 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 Katy? +
In Katy, where median home values are around $320,000, 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 Katy? +
Yes — Katy'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 Katy? +
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 Katy homes built before the 1990s.
Also Available in Katy
Planning to build an ADU? See our ADU design service.
Next Steps
Ready to Move Forward With Your Katy 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 Permit & Building 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 Permit & Building Services. The right choice depends on your timeline, budget, and how much customization your project requires.