When evaluating a lot for a custom home, access is as important as square footage and orientation. Start by confirming legal access: the lot must have a recorded means of ingress and egress to a public right-of-way or a documented, perpetual access easement. Many Denver-area parcels sit on private roads or drive easements that carry maintenance obligations or restrictions — know whether the road is maintained by a homeowners association, a county, or a private agreement, and check for encroachments, gated entries, seasonal closures, or deed restrictions that could limit construction or year-round occupancy.
Physical access governs whether heavy equipment, material deliveries, and emergency vehicles can reach the site. Typical requirements you’ll encounter include a travel width around 20 feet, vertical clearance near 13’6″, and a turning radius able to accommodate a 38–40-foot fire apparatus; many jurisdictions also limit driveway grades to roughly 10–12% for safe emergency access, and require turnarounds for dead-end access beyond a specified distance. Mountain and foothills lots around Denver add special demands: steep approaches, winter snow removal, culverts or small bridge crossings, and compacted access pads to support concrete trucks and cranes. Early attention to road width, surface material, slope, and staging areas can avoid costly temporary solutions during construction.
Access also means utilities, drainage and permitting. Determine whether municipal water and sewer are immediately available or if the lot requires a well and septic system (and the associated permitting and percolation testing), and verify proximity to electrical, gas and telecom lines plus any utility easements that limit building locations. Check for floodplain, wetlands or steep-slope setbacks that affect both access routes and site layout, and plan for curb-cut or driveway permits, stormwater control during construction, and potential off-site improvements. At RKM Homes we begin every project with a site-access assessment — coordinating surveys, civil engineers and local authorities — so you understand the practical and regulatory constraints before design and budgeting begin.
Does my lot have legal access and a recorded easement or right‑of‑way?
As a custom home builder in Denver I treat legal access as a make‑or‑break item on every lot. Municipalities and lenders usually require recorded legal access to a public road before they’ll issue permits or fund construction, so you need either direct frontage on a dedicated public right‑of‑way or a recorded ingress/egress easement that clearly gives the parcel access across a neighbor’s property. An informal driveway or a neighbor’s verbal permission is not reliable — it can stop a permit, block financing, and create costly disputes down the road.
Practical checks to perform early: order the preliminary title commitment and an ALTA/NSPS survey during your due‑diligence period and read the recorded easement language carefully. Confirm the easement is recorded in the chain of title, shows the legal description, specifies permitted uses (vehicles, utilities, construction), gives a measurable width and alignment, and states whether it’s perpetual and non‑exclusive. Verify the easement allows heavy equipment and temporary construction staging; if that language is missing, request a temporary construction easement or a written agreement from the servient owner before you sign a contract.
If access is only by an unrecorded path or a prescriptive claim, treat it as a red flag and get it cured before closing — either by having the seller record a formal easement or by negotiating a contingency that requires proof of acceptable access. Have a real estate attorney and your title company review exceptions on the title report (Schedule B) and consider requiring an affirmative title insurance endorsement for access. Also document any private‑road maintenance obligations or cost‑sharing agreements in writing; those ongoing responsibilities follow the property and will affect construction logistics, budgeting, and future resale.
What road frontage, roadway width, surface type, grade and sight distance does my buildable lot need for reliable vehicle access?
As a custom home builder in the Denver area I always start by measuring the lot frontage and the usable width of the abutting road. Many municipalities and practical neighborhood patterns make 50 feet of road frontage a comfortable minimum for a conventional single‑family build — it gives room for a properly placed driveway and avoids awkward side‑yard access. For the roadway itself, plan on a minimum 24‑foot paved travel width for safe two‑way access (two 12‑foot lanes); 20‑feet or less can work for low‑traffic private roads but will complicate deliveries and construction equipment turning. For your driveway, a single‑car approach of 10–12 feet and a two‑car approach of 18–20 feet are standard; make sure the approach allows a concrete truck and a delivery truck to safely enter and back out or turn around without driving into neighbors’ yards.
The surface and grade determine whether access is year‑round and what preparation is required before we can bring heavy equipment onsite. Paved roads perform best for ongoing access and snow clearing; if the street is gravel, look for well‑compacted aggregate and a stable base — you may need to budget to upgrade or stabilize a private road before construction. Road grades above about 8–10% become challenging for sustained vehicle traffic and snow/ice control, and most driveways should be designed under 12–15% if at all possible; keep the first 15–25 feet of the driveway coming off the road fairly flat (ideally under 5%) so cars and service vehicles can enter and exit safely without scraping or sliding. Use a simple phone level or hire a surveyor to get an accurate slope measurement before making layout decisions.
Sight distance is a practical safety check you can perform before you buy: stand at your proposed driveway location and confirm you have a clear view of the road far enough in both directions for a vehicle to perceive, react and stop at the posted speed. As a rule of thumb, allow roughly 200 feet of clear sight for 25–30 mph roads, about 300 feet for 35 mph, and 450–500 feet as speeds approach 45 mph — if you can’t see that far, consider shifting the driveway location, clearing vegetation, or reconfiguring the approach. Before closing on a lot insist I or a civil engineer review road geometry and sightlines so we can size turn radii, design the approach grade and include any temporary road improvements in the construction budget.
What emergency and service access requirements should my buildable lot meet for fire apparatus, hydrants, ambulance access, and snow removal?
First, verify the physical access that fire apparatus will need. Speak with the local fire marshal early and ask for their apparatus turning template and minimum dimensions — most departments require a clear, paved access that can support heavy trucks, has adequate turning radius or a hammerhead/cul‑de‑sac turnaround where dead‑end access exceeds their allowable length, and provides vertical clearance for tall equipment. From a builder’s perspective I insist on specifying a driveway/road surface engineered for heavy loads (not just decorative pavers), a minimum maintained clear width and overhead clearance (confirm exact numbers locally), and an explicit plan for keeping that route unobstructed (no long gates without Knox box access, no permanent landscaping that narrows the path).
Second, confirm fire‑water availability and hydrant placement before you buy or design. Ask the water department for a current fire flow test and for the exact distance from the lot to the nearest hydrant; if the flow or proximity doesn’t meet the fire department’s requirement you’ll likely be required to install residential sprinklers, an on‑site cistern, or a dedicated fire line — all of which add to cost and design. As your builder I request those fire‑flow numbers at schematic design so we can plan meter sizes, sprinkler systems (NFPA 13D vs. 13), and any necessary private hydrant/fire main work into the budget rather than discovering it during permitting.
Finally, plan for EMS access and winter service in your site design. Ambulances need a stable, low‑slip surface and moderate grades — keep main drive grades ideally under 10–12% and avoid sharp, narrow approaches that prevent stretcher loading. If the lot is in a snowy area, identify who will remove snow (municipality, HOA, or owner), provide a defined snow storage area that won’t block access or hydrants, and size driveways/turnarounds to allow plows to maneuver or to avoid plowing equipment damaging your finished surface. Practical items I add to every plan: clearly visible reflective address numbers, a Knox box for gated entries, and an access maintenance agreement if the access is shared — these small steps remove delays during emergencies and save retrofit cost later.
How can I confirm a lot has adequate utilities and infrastructure (water, sewer/septic, power, gas, telecom, stormwater) for my custom home?
As an experienced custom home builder, the first thing we do is confirm actual availability and capacity — not just that lines exist near the property. Call each utility provider and request a written letter of availability (sometimes called a will-serve or serviceability letter) that lists main size, distance to the lot, maximum meter size available, and any known capacity constraints. For water and sewer providers ask for specific pressure and flow numbers at the nearest meter or main; those numbers determine whether you can support domestic use, irrigation and a sprinkler system without adding pumps. If the lot isn’t on a public sewer or water system, schedule a percolation test and a well capacity test early; a failing perc or low-yield well materially changes feasibility and cost.
Know the practical checks for each system before you sign a purchase or commit to plans. For sewer, confirm the depth and elevation of the nearest main — if your finish floor sits below the main you’ll likely need a grinder pump system and basin, which adds cost and maintenance. For electric, confirm service type (overhead vs underground), available amperage, transformer location and whether a 3-phase service is nearby if you plan a large shop. For gas, ask the utility for line pressure and whether a main extension is necessary. For telecom, confirm whether fiber or only copper/DSL is available at the property and whether providers will run a drop to a new home. For stormwater, ask the jurisdiction whether on-site infiltration, detention, or off-site conveyance is required and whether the lot sits in a mapped drainage way or floodplain — those dictate grading limits and possible engineered solutions.
Plan for time and cost impacts from utility work. Obtain preliminary extension quotes from utilities or qualified contractors and allow for permit and construction lead times — extensions or transformer installations can take months and range from a few thousand dollars to tens of thousands depending on distance and trenching requirements. We always recommend budgeting utility contingencies in the purchase offer, asking the seller for any existing utility records, and scheduling utility confirmations as part of due diligence. On the jobsite, call 811 to locate existing underground utilities before any digging and coordinate early with the utility companies so service drops, meter locations, and any required easements are defined before foundation and grading plans are finalized.
What permits, zoning rules, and driveway/curb‑cut regulations and maintenance responsibilities should I check for a buildable lot?
Start by confirming the parcel’s zoning designation and any overlay districts with the local planning department — those rules determine whether your driveway location, width, surface type (permeable vs. impermeable), and curb-cut options are allowed by right or require a variance. Ask for a written list of submittal requirements for driveway/curb-cut permits and any special conditions (historic district standards, stormwater/low‑impact development requirements, or streetscape design standards). As builders we always request the zoning handout and a copy of any recorded HOA/CC&R provisions before finalizing a site plan so permit needs and design constraints are clear up front.
Curb‑cut and driveway permits are typically handled by the city, county, or state DOT if the lot fronts a highway, and applications usually require a scaled site plan, driveway profile/grade, drainage details (culvert or curb-gutter tie‑ins), traffic control plan for construction, and proof of contractor insurance. Expect fees, inspection checklists, and sometimes a refundable restoration bond to cover right‑of‑way repair. Typical lead times vary — simple residential driveway permits can be processed in 2–4 weeks; anything needing a variance, traffic study, or stormwater approval can add months — so include permit turnaround in your schedule and budget.
Clarify who will maintain the driveway, curb, gutter, and any culvert long term before you close: municipalities often maintain curb and gutter on public streets, but private driveways, culverts, and private road segments commonly fall to the homeowner or an HOA/road district. Permit approvals may require a recorded maintenance agreement or condition on the building permit; demand to see that language and, if needed, negotiate a maintenance clause in your purchase contract or get the builder to handle permit conditions. We advise documenting responsibilities in writing, confirming whether snow removal is municipal or private, and budgeting for future maintenance so there are no surprises after move‑in.