Lake house and cottage renovation in Southeast Michigan
Lake house renovation for the cottage that’s ready to be a four-season home.
A lake house renovation starts at the shoreline and works back toward the road. The water decides which permits apply, the slope decides where a deck or a walkout can go, and decades of add-ons decide what’s hiding behind the paneling. Wright’s Renovations plans lake work across Livingston and Oakland counties as whole-house renovation under one contract, with the site questions answered before the design starts.
What makes a lake house renovation different
Inside, a lake house needs what any house needs: a kitchen that works, enough bathrooms and bedrooms that sleep the family. Outside, the lot is narrow, the grade falls toward the water and the state cares about every shovel of dirt near the shore.
Built for summer, lived in all year
Plenty of Southeast Michigan lake houses started as cottages for weekends between Memorial Day and Labor Day, with plumbing that got drained every fall. Living there through January means rethinking heat, water lines, windows and the floor over the crawlspace, and it usually means a kitchen design built for daily cooking rather than a summer grill.
The water sets the rules
Michigan regulates earth changes near lakes and work along the shoreline, and the township regulates setbacks on lots that are often only a few dozen feet wide. A deck built down the slope or an addition toward the water gets checked against all of it before anything is drawn in detail.
Every room wants the view
On a lake lot, the back of the house is the front. Owners want the kitchen, the main living space and the primary bedroom facing the water, and that often means moving rooms, opening walls and putting larger windows on the lake side where the original cottage had small ones.
Permits and site rules for lakefront property
Here’s how the state rules work as published in October 2026. The permits below are separate from the building permit, and some of them belong to specialists Wright’s coordinates with rather than builds.
Earth changes near the water
Under Part 91 of Michigan’s environmental code, an earth change within 500 feet of a lake or stream needs a soil erosion and sedimentation control permit, as does disturbing an acre or more anywhere, per EGLE’s soil erosion program.
Almost any lake-lot addition, deck footing run or regrade triggers it. The silt fence and the permit go into the schedule and the estimate from the start.
Who issues the erosion permit
In Livingston County, it’s the Drain Commissioner. In Oakland County, it’s the Water Resources Commissioner, though Commerce and Orion townships issue their own. In Washtenaw County, it’s county building services, with several townships issuing their own.
The right office depends on the township, not just the county. Checking it at the walkthrough avoids a stop-work notice later.
Seawalls and shoreline protection
Part 301 covers inland lakes of 5 acres or more. New or replacement seawalls and riprap need a state permit, while small like-for-like seawall repairs covering 25 percent or less of the wall’s length are exempt. The state prefers natural, bioengineered shorelines.
Shoreline work belongs to marine contractors. Wright’s plans the house, the deck and the grading around it so they don’t conflict with a shoreline permit.
Docks
Permanent docks need a state permit. Seasonal private docks that don’t interfere with others’ use of the lake or with water flow are exempt.
Dock work isn’t in Wright’s scope, but the stairs, landings and lighting that lead down to it often are.
Short stays at the lake
Some lake communities restrict stays of fewer than 30 days, and others have been studying it. Rules differ by village and township, even on the same chain of lakes.
If the plan includes renting the house out, check the local ordinance first. Short-term rental rules by city covers what’s been published.
Bedrooms and the septic system
Many lake lots run on a private well and septic. Septic systems are sized by bedroom count, so adding a bedroom can bring the county health department into the project. That question gets asked at the walkthrough, alongside addition permits in Michigan, before a new bunk room goes on the drawings.
Renovation services for lake houses and cottages
Every scope below runs through the same design-build team and gets priced line by line. Most lake projects combine an interior overhaul with one outdoor room, sequenced so the summer stays open.
Kitchens that face the water
Turning the kitchen toward the lake, with an island for a crowd and storage for a summer’s worth of guests, is the most common first move in a cottage that’s becoming a full-time house.
Walkout lower levels
Sloped lake lots often have a walkout below the main floor. Finished well, with moisture control and egress, it becomes a bunk room, a second living area or a guest suite that opens to the yard.
Screened porches
Michigan’s lake season comes with mosquitoes. A screened porch built on proper footings gives the family a room on the water that works from June to the first frost.
Three-season rooms
Glass instead of screens stretches the season into spring and fall. It’s often the room that convinces an owner the cottage can work year-round.
Mudrooms for wet gear
Life jackets, towels, boots and fishing gear need somewhere to land that isn’t the living room. A tiled mudroom with a bench, hooks and a floor drain earns its square footage fast.
More bathrooms for more guests
Lake houses fill up on holiday weekends. A second or third bath, or an outdoor shower by the walkout, keeps a full house moving.
From a Google review
I highly recommend Wright's Renovations because they deliver what they say they will and a whole lot more. They built us a beautiful new deck and we had the best experience ever with this home project, and I hope to work with them again.
Deck build · Google review · Read the full review on Google
What a lake house renovation finds behind the walls
Cottages get added onto one summer at a time, often by different people with different ideas about framing. The same handful of surprises shows up at lake after lake, and planning for them keeps the budget honest.
Additions built a piece at a time
A porch enclosed in one decade, a bedroom added in another and a kitchen bumped out later leave rooflines, floors and framing that don’t quite line up, with load paths nobody drew.
The house gets measured and opened where it matters before the estimate is final, and structural changes go to an engineer when the load path is unclear.
Crawlspaces and damp floors
Lake lots sit low and close to the water table. Crawlspaces with bare soil, soft subfloors and musty closets are common, especially on the lake side.
Moisture gets addressed at the source before new floors go down, often with a crawl space vapor barrier and repaired subfloor.
Plumbing built to be drained
Seasonal cottages often have supply lines in exterior walls or crawlspaces, because nobody expected them to hold water in February.
Lines get moved inside the heated envelope wherever walls are open, so the house can be lived in, or left empty, through a Michigan winter.
Small windows on the best side
Older cottages often have small, single-pane windows facing the lake, framed in openings that weren’t sized for the view.
New openings are framed with proper headers, and windows are chosen for the exposure, since the lake side takes the wind all winter.
Decks past their prime
Lake decks sit in sun, rain and spray for decades. Ledger connections, footings and railings are where they usually fail first.
Old decks get inspected before they’re reused. Where the frame is gone, a rebuild is cheaper than a repair; where it’s sound, deck repair gets another decade out of it.
Plan the season backward
Lake owners usually want the house open by Memorial Day. That means design over the winter, interior work through the colder months and exterior work as soon as the ground allows. Planning a deck in winter gets the drawings and permits done so the crew can start when the frost leaves.
A lake house renovation follows one shape
The lake calendar runs the schedule. Every project moves through the same four stages, timed so the summer season stays open whenever the scope allows.
Site walk
A walkthrough of the house and the lot, a look at the grade toward the water and the questions about septic, setbacks and erosion permits. Book the site walk with one call.
Design and estimate
Measured drawings, selections and an itemized estimate that separates the interior work from the outdoor rooms, so you can phase them across seasons.
Build
Permits in hand, silt fence up and a schedule built around the lake season. Daily updates go to the project dashboard for owners who live elsewhere most of the year.
Walkthrough
A punch list closed out room by room and a house left ready for the first weekend at the lake. Later small fixes go to Wright’s Repairs instead of a new contract.
Why lake owners hire Wright’s
A lake house is often a second home, or a first home for someone who’s moving there from somewhere else. Wright’s Renovations runs every project through a licensed Ypsilanti design-build firm, so one team handles the design, the permits, the crew and the updates while you’re not there.
That matters at the lake because the site is half the job. Grade, setbacks, septic and the erosion permit all decide what the house can become, and one team that owns the whole plan keeps those questions from bouncing between a designer, a builder and three subcontractors.
It matters for the calendar, too. A firm that schedules around the lake season can do interior work through the winter and outdoor rooms as soon as the ground thaws, so the house is ready for summer.
- One team, one contract. Designer, project manager and crew under one roof, from the site walk to the final walkthrough.
- A live project dashboard. Schedule, budget, selections and daily photos for owners who are rarely at the lake midweek.
- Priced before it’s built. Interior rooms and outdoor rooms estimated separately, so the plan can be phased across seasons.
From a Google review
This five-star review is long overdue! About a year ago, we had Wright’s renovations remodel our kitchen, and the experience was absolutely amazing. As many homeowners know, kitchen renovations can be challenging—even with the best contractors—but Wright’s went above and beyond.
Kitchen remodel and wood ceiling · Google review · Read the full review on Google
Questions about renovating a lake house
Can my cottage become a year-round house?
Usually, yes, but it’s more than adding heat. Water lines have to stay inside the warm part of the house, the floor over the crawlspace has to stay dry, and the windows and walls on the lake side have to stand up to winter wind. Wright’s checks all of it at the site walk before pricing a whole-house remodel.
Do I need a state permit to renovate near the lake?
For the house itself, the township building permit covers it. Any earth change within 500 feet of a lake or stream also needs a soil erosion permit, and work on the shoreline, like a new seawall or a permanent dock, needs a state permit under a separate program. Wright’s handles the erosion permit as part of the job.
Can you build a deck down the slope to the water?
Often, yes, within the township’s setbacks and with an erosion permit for the footings. Multi-level decks with landings and stairs are common on lake lots, and the railings, lighting and stairs get designed for a family carrying coolers down at night.
Can I add bedrooms to a lake house?
That depends on the septic system, the setbacks and the roof. Because a septic field is sized to the number of bedrooms, adding one can involve the county health department. A finished walkout or a second-story addition are the usual ways to add sleeping space on a narrow lot.
When’s the best time to renovate a lake house?
Design in fall and early winter, interior work through the cold months and outdoor work once the frost is out. That sequence keeps the summer open and lets the outdoor rooms go in when concrete and footings can be done properly.
Can I rent my lake house out?
Some lake communities allow short stays, some restrict anything under 30 days and some are still deciding. Check the village or township ordinance first; renting a property long term follows a different set of rules.
Lake work also runs through Whitmore Lake, Milford and West Bloomfield, across Livingston County, Oakland County and Washtenaw County. Step back to the full service area to find your town.
Answer the site questions first, then plan the house.
Bring the address, a few photos from the water side and how you want to use the place in January. Wright’s will check the site rules, then price the renovation that gets the house there. Office hours run 8 a.m. to 4 p.m., Monday through Friday.
Other properties Wright’s renovates
Renting the lake house out? Start with Airbnb renovation for landlords or rental property renovation. For a postwar house on the lake, see ranch home renovation, and for older cottages, historic home renovation, all under every home type Wright’s renovates.
